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RAPPORT DE CONFERENCES FEMME '90 & HYDRO 90 Southampton, UK 15 au 20 decembre 1990 Andre Godin Service hydrographique du Canada VIC. 594 F45 1990 Ex. 1 Pech es Fisheries et Oceans and Oceans Canada ...
COMPTE RENDU DES CONFERENCES
FEMME '90 Forum for EM Mutual Experience ET
HYDRO 90 Seventh Biennial International Symposium of The Hydrographic Society
Andre Godin ~I< 'Sq t.{ Service hydrographique du Canada Region du Quebec f ~6' 1tltto Fevrter 1991 E.x .. I 3
FEMME '90 FORUM FOR EM MUTUAL EXPERIENCE Du 15 au 1 7 decembre 1990 Southampton, U.K.
Ce forum permet aux utilisateurs des echosondeurs multi-faisceaux SIMRAD, d'echanger leurs experiences et de connaitre les projets de developpement inities par divers organismes ou institutions. Le forum, d'une duree de deux jours, est organise et orchestre par la compagnie SIMRAD Subsea A/ S de Norvege. Les discussions ont traite plus specifiquement sur les systemes d'acquisition et de post-traitement des donnees Premier tour Apres les preliminaires d'usage, les membres de l'equipe SIMRAD nous presentaient leurs nouveautes et les developpements en cours. Par la suite. ils demanderent aux participants de faire un court expose de leurs experiences. Les participants ont presente leur installation SIMRAD et leurs travaux sans vraiment mentionner les problemes rencontres, a !'exception du representant du service hydrographique hollandais (annexe B). Peu d'echange et de discussions sur nos "experiences mutuelles" sont ressortis de cette premiere joumee, l'equipe SIMRAD s'appliquant beaucoup plus a publiciser leurs produits. Cette publicite peut se faire aussi bien par correspondance ou par moyens audiovisuels, surtout quand il y a une exposition prevue dans la meme semaine. Les utilisateurs de sondeurs multi-faisceaux SIMRAD ont generalement tous la meme configuration de systemes et ces informations sont peu profitables pour nous. Mentionnons quand meme le developpement de l'echosondeur SIMRAD EMlOOO (annexe C), anciennement le EMlOO/ISE. Le premier systeme de ce genre sera installe sur le navire de recherche espagnol "Hesperides" au printemps 1991. Notons que la limite maximale d'operation du sondeur est de 800 m et pourra mesurer les profondeurs entre 5 et 100 m avec une couverture du fond marin representant 7.4 fois la profondeur. Ce systeme serait une excellente acquisition pour le SHC qui effectue des leves hydrographiques dans des secteurs souvent peu profonds. 4 J Une couverture totale pourrait alors etre obtenue beaucoup plus rapidement qu'avec le systeme actuel. Un peu de lumiere a ete faite sur les techniques de detection du fond ou "bottom detection" utilisees avec les sondeurs multi-faisceaux SIMRAD (annexe D}; un court expose sur ce sujet a ete donne par Freddy P0hner. Ce dernier a introduit egalement une nouveaute dans les produits SIMRAD: l'imagerie sonar (annexe E} obtenue a partir des retours de signaux de certains sondeurs multi-faisceaux. Cette option ne semble pas etre tres utile pour nos leves hydrographiques et interessera surtout les organismes geoscientifiques. La compagnie SIMRAD donne maintenant un service 24 heures sur 24 durant toute l'annee avec possibilite de location d'equipement (annexe F}. De plus, la compagnie a defini les termes d'un nouveau contrat de maintenance pour les proprietaires d'equipement SIMRAD (annexe G). Deuxi~me lour Lors de la deuxieme journee, l'equipe SIMRAD introduisit son nouveau concept de traitement des donnees "Neptune". Quelques presentations ont ete faites par les participants sur le traitement des donnees. Certains problemes furent souleves mais resterent pratiquement sans reponse. La majorite des organismes hydrographiques, tel le n6tre, est insatisfaite du produit final fourni par le logiciel BLOM SPlOO, du en majeure partie au processus d'interpolation des donnees. Les compagnies privees, effectuant de la recherche petroliere OU de la modelisation de terrain a des fins de dragage ou d'installation d'infrastructures sur le fond marin, semblent satisfaites du produit et utilisent les resultats comme outil de presentation; peu de soutien de leur part est envisageable. Le progiciel "Neptune" (annexe H) est un ensemble modulaire de programmes fonctionnant sur systeme d'exploitation UNIX; il permet certaines manipulations des donnees. L'interface usager a ete completement modifiee (utilisation des logiciels X-Window et Motif} et ressemblera beaucoup au produit propose par le "Ocean Mapping Group" de l'Universite du Nouveau-Brunswickl. Ce nouveau concept est une nette amelioration du produit existant. le SPlOO de Blom Inc. A noter que l'acquereur eventuel du systeme n'est pas oblige d'acheter taus les modules mais peut acquerir ceux s'adaptant a ses besoins. J'avais emporte avec moi une liste des problemes que nous avians rencontres avec notre echosondeur EMlOO ainsi qu'avec le systeme de traitement SPlOO. Voyant la tournure des evenements et considerant la quantit e de points a discuter, j'ai prefere attendre la fin du forum pour 1Final Report; Requirements analysis and conceptual design of data cleaning tools for large bathymetrtc data sets: David Wells et al.: 1990 ANNEXE A LISTE DES PARTICIPANfS DE FEMME '90 .-... · . . ~-~· ·· ...... ~ """""' . . 5 m'entretenir en aparte avec le personnel de la compagnie SIMRAD. Ces gens ont pu identifier certains de nos problemes et semblent vouloir nous aider a y remedier. D'autres problemes leur etaient inconnus et ils nous ont demande d'envoyer plus d'informatlon ainsi que des donnees brutes sur disque optique afin d'isoler ce qui ne va pas. Conclusion Ce forum est une bonne occasion pour le Service hydrographique du Canada de faire connaissance avec d'autres organismes oeuvrant en hydrographie et utilisant des sondeurs multi-faisceaux SIMRAD. Malgre le fait que peu de temps fut alloue par les representants SIMRAD pour des echanges d'experiences entre les participants, les contacts entre ceux-ci furent obtenus et pourront subsequemment servir dans l'interet de chacun. Les representants de la compagnie SIMRAD furent courtois et empresses, et s'assurerent tout au long du forum, du parfait confort de chaque participant. Ma seule reserve est que cette rencontre etait de caractere beaucoup trop formelle ce qui a mon avis, gene les participants et restreint leur chance d'echanger des informations entre eux. Plus de temps et de latitude devraient etre donnes aux participants pour exprtmer leur avis et exposer leurs problemes dans un cadre informel et amical. La date et le lieu du prochain_forum FEMME n'ont pas encore_ete decides mais les repr:esentants SIMRAD envisagent d'organiser cette rencontre en 1992 aux Etats-Unis, forum qui serait adjacent a la Conference hydrographique bi-annuelle americaine. HYDR090 Seventh Biennial International Symposium of The Hydro2ra.phic Society Du 18 au 20 decembre 1990 Southampton, U.K. Cette conference, d'envergure internationale, fut tenue a l'Universite de Southampton (UK) et fut organisee par "The Hydro graphic Society". Cette societe regroupe quelque 300 membres de la · communaute hydrographique de 70 pays. La conference, d'une duree de trois jours, proposait deux sessions par jour; 28 communications (annexe K) furent presentees et regroupees dans un volume disponible au bureau de Bernard Tessier. Le theme de chaque session s'intitulait comme suit: 18 dee. AM Legal and Professional Aspects PM Acoustic Measurement 19 dee. AM The Environment PM GPS 20 dee. AM The Electronic Chart PM Dredging Operations Deux articles realises par le personnel du Service hydrographique du Canada furent presentes dont un par Dave Pugh (Electronic Sailing Directions) traitant de !'utilisation de la bureautique informatisee pour la realisation des Instructions Nautiques sous forme numerique et de publication. J'ai ete, comme la plupart des personnes presentes, favorablement impressionne par la presentation de Dave Pugh. L'autre communication, presentee par moi-meme (Practical Experience with the Simrad EMlOO Swath Sounding System), traitait de notre experience avec l'echosondeur multi-faisceaux SIMRAD EMlOO. J'ai profite de !'occasion, a la fin de ma presentation, pour faire la promotion de la Conference hydrographique du Canada qui doit se tenir a Rimouski en avril 1991. 7 Une communication presentee par Brian Russell (Hovercraft for Hydrographic Surveying) a attire particulierement mon attention. L'utilisation d'un aeroglisseur comme plate-forme de travail n'est pas recente mais son application a des fins hydrographiques devrait etre examinee de fac;;on plus approfondie. En effet, en plus d'etre une plate forme tres stable, l'aeroglisseur possede des qualites inegalees par rapport aux plates-formes conventionnelles. Ainsi, il est possible d'effectuer des leves dans des zones tidales peu profondes ou marecageuses (sans aucune restriction) et ceci trois fois plus rapidement. De plus, l'aeroglisseur ne requiert aucune infrastructure portuaire car il peut "atterrir" pratiquement n'importe mi. L'hydrographie des eaux c6tieres belges fut effectuee avec succes a l'aide d'aeroglisseurs. Le symposium fut aussi le theatre d'une imposante exposition commerciale avec 42 compagnies representees (annexe L). L'on y retrouvait du simple trepied aux systemes complexes de traitement de donnees Cette conference nous a permis d'elargir nos relations avec l'etranger car plusieurs personnes sont venues me voir pour avoir des informations additionnelles sur nos leves multi-faisceaux, notamment des membres du Service hydrographique du Portugal qui envisage d'acquerir des echosondeurs multi-faisceaux SIMRAD et desire entretenir des liens avec nous. lAn evaluation of the swath vessel Frederick G. Creed in the C&nadlan north atlantlc: J.E. Goodyear et al.: 1990 "'--~ SIMRAI>--- ~ Subsea A:\FEMME90.PAR 90.12.14 Confirmed participants FEMME 90 Address/List Norges Sj0kartverk S0lvberg Postboks 60 Sagberg ·-N-4001 STAVANGER Midthassel (monday) Norway Attn.: Atle Midthassel Phone: +47-4-563411 Fax 563740 A/S Geoconsult Hans Gravdal Nedre Astveit 12 Didrik Andersen N-5083 0VRE ERVIK Norway Attn.: Hans M. Gravdal Phone: +47-5-187130 Fax 189681 Stolt-Nielsen Seaway A/S Oddvar Misund · - Postboks 370 N-5501 HAUGESUND Norway Attn.: Oddvar Misund Phone: +47-4-714100 Fax 713611 FFI/U Gunn Marit S0nsterud 2 K.J.V. Kjell Halvorsen N-3190 HORTEN Norway Attn.: Jarl Johnsen Phone: +47-33-42081 Fax 47834 Rijkswaterstaat Jaap Lagas 1 Directie Noordzee Postbus 5807 2280 HV RIJSWIJK, Holland Attn.: Ron Soffers Phone: +31-703-949500 Fax 900691 Worldwide Ocean Surveying Ltd. John Bennett Hargreaves Road Groundwell Industrial Estate N.ti.k l/Af/.j)MP,tJ SWINDON, Wiltshire SN2 5AZ, England Attn.: Martin Hutchings Phone: +44-793-723014 Fax 728302 / - 2 - IFREMER, Centre de Toulon Q Zone Portuaire de Bregaillon B.P. 330, 83507 LA SEYNE-SUR-MER CED EX France Attn.: Francois Parthiot Phone: +33-94-304800 Fax 301372 Naval Oceanographic Off ice George Walker 2 ...STENNIS SPACE CENTER Judy Houston Ms 39522-5001 USA Attn.: George Walker, Director Hydrographic Dept Phone: +l-601-688-5840 / _5g'-f Canadian Hydrographic Service Gerard Costello 2 P.O.Box 1006 Bernard Tessier DARTMOUTH, N.S. A. Hayes (Geo-Resources) Canada B2Y 4A2 A~i GolliN Attn.: Paul Bellmare Phone: +1-902-426-3497 Fax 426-7827 Consejo Superior de Investigaciones Cientif icas O Paseo Nacional s/n 08003 BARCELONA Spain Attn.: Andres Maldonado/Jose Ignacio Diaz Phone: +34-3-319 43 28 Fax 319 98 42 Institute Espanol de Oceanographica C. Palomo Pedraza i Avda. Brasil, 31 y Sor Angela de la Cruz, 28020 MADRID Spain Attn.: Carlos Palomo Pedraza Phone: +34-1-347 36 19 Fax 413 55 97 Ministry of Merchant Marine of the USSR Q Hydrographic Department Moskovskiy Prospect, 12 LENINGRAD, USSR Phone: Fax University of New Brunswick Dave Wells 1 Dept of Surveying Engineering P.O.Box 4400 FREDERICTON, N.B. E3B 5A3 Canada Attn.: Dave Wells Phone: +1-5 0 6-453-5147 Fax 453-4943 ~ , ~ .,.,... r Subsea "'"'- - 3 - STATOIL Arne Indreeide STAVANGER Blom A/S Q H0ybrAtenvn. 13 B N-1055 OSLO 10 Norway Attn.: Fredrik Steiwer Phone: +47-2-302085 "" Fax 320318 Geomatic A/S Olav Eaeland Postboks 165 Sk0yen N-0212 OSLO 2 Norway Attn.: Olav Egeland Phone: +47-2-504330 Fax 500555 Tecnologias Internacionales s.a. F. Alvarez-Novoa i Alcala 52 28014 MADRID, Spain Attn.: Fernando Alvarez-Novoa Romero Phone: +34-1-532-62-04 Fax 532-62-02 Simrad Ltd., Aberdeen Richard Read i Barry Pardey/Richard Read Simrad Inc., Seattle Michael Hill ers i Michael Hillers Simrad Mesotech, Vancouver 1 Steinar Gregersen Simrad Subsea A/S Freddy P0hner Stein Asheim Jan Haug Kristensen 0yvind Espeland Harald Baklid L1 H!!~RAP MULTIBEAM ECHO SOUNDER SYSTEMS APRIL 1990 System Vessel Owner Country Inst. EMlOO "SIMRAD" Simrad Subs ea A/S Norway 1985 EMlOO "SIMSON ECHO Simrad Subs ea A/S Norway 1986 EMlOO "GEOFJORD" AS Geoconsult Norway 1986 EMlOO "ICE KING" K/S A/S Ice King Norway 1987 EMlOO "LANCE" Norwegian Hydrogr. Norway 1987 Service EMlOO "GEOGRAPH" AS Geoconsult Norway 1987 EMlOO "NORTH SEA Stolt-Nielsen Norway 1988 SURVEYOR" Seaway EMlOO "LOUIS M. Canandian Hydrogr. Canada 198? LAUZIER" Service EMlOO "CHR. BRUNINGS '' Ri jkswaterstaat Netherlands 1989 E..."'1100 Div.u Norw. Defence Norway 1989 Research Es tblrn. EMl2 Dual "LI ATALANTE II IFREMER France 1990 EM12 "OCEAN Worldwide Ocean England 1990 EMlOO SURVEYOR" Surveyi ng Ltd. EMl OO "JOHN US Naval USA 1990/91 McDONNELL" Oceanographic (T-AGS 51) Off ice EMlOO "LITTLE- US Naval USA 1990/91 HALES " Oceanographic (T-AGS 52) Of £ice EM12 "HESPERIDES " Consejo Superior Spain 199 0 EM100/ISE de Investigaciones Cientif icas EMlOO "MAXWELL " CHS Canada 1990 replacement EMlOO CHS Canada 1990 ANNEXEB EXPERIENCE PRATIQUE AVEC LE SIMRAD EM100 PAR LE RIJKSWATERSTAAT MINISTERE DU TRANSPORT HOLLANDAIS ., ( Rijkswaterstaat is a department of the Ministry of Transport and Public Works. !.() [/ ('. ,.)[.., Northsea Directorate is part of Rijkswaterstaat. One task of Northsea Directorate is to coordinate and carry out research for: effective management of the North Sea prudent exploitation of North Sea resources For this purpose Northsea Directorate operates a fleet of six ships and one aircraft. They collect data on oceanography and marine geology to build up a greater knowledge and unders_tanding of marine phenomena. This knowledge is required for: increasing shipping and offshore activities in the North Sea plans for the environment land reclamation shoreline defence combat against marine pollution Most of these data are collected by the survey division of Northsea Directorate ,i. e.: detailed surveys of shipping lanes checking of dredging works underwater pipeline inspections wreck investigations locating and identifying dangerous washed overboard cargo or debris assistance to other departments Focussing on the first two items it was realizeJ that a multibeam echo sounder could save a lot of surveying time, providi ng: the channel is long, narrow and/or of sufficient depth Another factor of even greater importance was the accuracy of the depth measurements. When guaranteeing a safe entrance to Europoort dredging has to be carried out based on accurate depthmeasurements. In one square kilometer a difference of 1 dm in depth means .100.000 m3. A costly performance. After extensive tests the sensoraccuracy was approved and the EM 100 system bought. Installation took place on board the surveyvessel "Christiaan Brunings" and in the office. The official transfer was done in november 1989. Hardware-problems after installation: On board the surveyvessel: a. Continuous depth-difference b. Datalogging optical disk c. Mounting of transducer d. Steppermotor not enough power e. etc. see list In the office: a. On the optical disk the last file was and is repeating itself b. Unable to plot charts larger than AO format In february 1990 the update of the TRAP package included a module in which it was possible to choose from a maxi mum , minimum or average depth (GST option). Making the processing part of th e EM I 00 system operational a lot of problems had to be solved. Apart from the training and exercise much time got into the following items: Interpolator To determine the correct adjustment of the interpolator took a lot of time. Theory did not always go hand in hand with the achieved results. IRAP shell To build a shell around IRAP a program was developped to generate procedures (KOM files). Waterdepth A special procedure had to be developped for constructing an adapted time table of waterdepths. Contourlines To generate contourlines with different markings can only be accomplished in a roundabout time consuming way. Implementation single beam A lot of trial and error is involved in finding the correct method for constructing contourlines from single beam soundings. Error correction Having errors corrected or having software adjusted for any other reason leads to delay. Spikes When applying 2 x SD to the STB-file a STBD-file is created. It is probable that not all spikes are deleted. A method for showing, discovering, saving and deleting those spikes goes as follows: Depending on the terrain a minimum and a maximum depth is determined in each gridcell of 10 x 10 mtrs. These two grids are subtracted. If the results exceed a predetermined value a window (10 x 10 mtrs) is created around the centerpoint of the gridcell. Such a window is filled with the depths from the STBD-file. An average depth is computed from all depths minus the maximum and minimum depth. A difference 1 between the average and the minimum depth as well as a difference 2 between the maximum and the average depth is determined together with a factor x: diff 2 I diff l and a factor y: diff 1 I diff 2. If from a predetermined factor the value exceeds factor x or the value of I/factor is less than factor y the concerning maximum or minimum depth is treated as a spike. The x,y,z is stored in a file. Example: A window selected for a max - min of > 1.5 mtr A selected factor of 3. 0 The window contains 20 depths. Average depth 23 .2 mtrs (not taking into account the 23.8 and 21.2 mtrs) Max depth 23.8 mtrs Min depth 21.2 mtrs The calculated factor x = (23 .2-21.2)/(23.8-23.2) = 2.0/0.6 = 3.33 This factor exceeds 3.0: depth is treated as a spike. If the difference between a new maximum depth and a new minimum depth still exceeds the selected value for that window the same method can be used, but with the same average depth. If the number of depths inside the selected window is less than a certain value (say 6) then the method is abandoned and a choice can be made in either showing the depths on the monitor and decide then what to do with those depths or deleting them, because most times those depths will be remnants of a bunch of spikes. Reasons can be found why lesser depth-values occur as spikes. Spikes with greater depth-values are illogical, but do occur! Before mentioned . ·. ·rl also takes care of those spikes. Only when those influenced and the possibility exists that those depths are not treated as spikes. Something for SIMRAD to look into. The created file with spikes is compared with the STBD-file. The matching x,y,z coordinates are changed into zeroes. !RAP gives you this possibility also. It takes a while longer, the results however are neater, because all zero coordinates are removed. SPIKE-ANALYSE VAN STB-FILE: 710504.STBD MET DIFF-FILE: 7105 04.DIFF (GRID-GROOTTE 10 METER ) *** SELECTIE-CRITERIA *** DIEPTE-VERSCHIL IN WINDOW > 1. 00 AANTAL STE-TRIPLETS IN WINDOW >= 5 VOOR SPIKES GELDT: 0.50 > FACTOR > 2.00 NDOW GEM MIN MAX FACT D MIN D MAX AANT WINDOW-CENTER 1 19.9 19.5 20.6 0.6 0.1 0.2 5 585862.5 816886.6 2 20.3 19.7 21. 2 0.7 0.0 0.3 5 585872.5 816886.6 3 19.9 18.6 x 20.2 6.1 1.1 0.1 56 586102.5 816896.6 4 20.4 19.5 x 20.6 3.1 0.6 0.0 47 586922.5 816916.6 5 20.7 19.1 x 20.9 8.2 1. 3 0.0 57 585152.5 817026.3 6 20.5 18.0 x 20.9 7.8 0.6 0.1 43 585162.5 817026.3 20.5 18.6 x 20.9 6.0 0.4 0.1 42 20.5 19.0 x 20.9 4.8 1. 5 0.1 41 7 20.5 19.4 x 20.8 5.5 0.5 0.0 30 586602.5 817026.3 8 21. 2 19.4 x 21. 5 7.8 1. 6 0.1 53 584972.5 817056.2 9 20.6 19.3 x 21. 0 4.4 0.4 0.1 21 585142.5 817056.2 20.6 19.7 x 21. 0 3.2 0.5 0.1 20 10 21. 9 19.3 x 22.1 14.3 1. 6 o.o 34 584802.5 817086.1 21. 9 20.9 x 22.1 5.2 0.8 o.o 33 11 20.3 19.3 x 20.5 5.3 0.4 0.0 42 585862.5 817086.1 12 20.0 18.8 20.6 1. 8 0.4 0.4 19 586102.5 817116.1 13 24.4 23.3 x 24.6 4.3 0.5 0.1 41 584172.5 817185.9 14 24.3 22.9 x 24.6 5.1 1. 2 0.1 37 584172.5 817195.9 15 20.4 19.6 20.9 1. 5 0.3 0.0 18 586832.5 817205.8 16 20.7 19.5 21. 6 1. 3 0.7 0.5 6 586532.5 817255.7 17 22.6 19.0 x 22.8 12.1 3. 3 0.1 25 582502.5 817465.2 18 21. 2 19.6 x 21. 4 8.4 1.1 o.o 34 583072.5 817515.1 19 21. 2 20.4 x 21. 5 3.0 0.7 0.0 34 583062.5 817525.1 20 21. 2 19.9 21. 8 2.0 0.7 0.4 8 583072.5 817525.1 21 22.3 21.6 x 22.6 3.0 0 . 6 0.0 38 582072.5 817535.1 22 21. 2 21. 0 22.0 x 0.2 0.1 0.8 24 583072.5 817535.1 23 20.8 20.0 x 21.1 2.2 0.6 0.1 29 583232.5 817535.1 24 22.5 20.7 x 22.7 10.8 1. 5 0.0 36 581952.5 817594.9 25 21. 8 21. 3 22.4 0.8 0.1 0.1 36 581692.5 817634.8 26 23.7 22.1 x 23.8 11. 3 1. 5 0.0 34 584242.5 817634.8 27 21. 2 20.1 x 21. 5 4.4 1. 0 o.o 31 581632.5 817644.8 28 21. 7 21. 2 22.2 0.9 0.1 0.1 31 581662.5 817644.8 29 21. 9 21. 6 23.3 x 0.2 0.1 1.1 37 581642.5 817654.8 30 22.6 20.0 x 23.1 4.5 0.7 0.1 19 583362.5 817664.8 22.6 20.7 x 23.1 3.2 0.8 0.1 18 22.6 21.5 23.1 1. 7 0.2 0.1 17 31 23.7 22.3 x 23.8 14.3 1. 3 o.o 14 584112.5 817664.8 32 22.9 20.1 x 23.2 9.2 1. 6 o.o 28 583402.5 817704.6 22.9 21. 7 x 23.2 3.9 0 . 2 0.0 27 22.9 21. 9 x 23.2 3. 1 0.4 o.o 26 33 22.9 21. 0 x 23.1 11. 8 1. 6 0.0 11 583422.5 817704.6 34 23.0 21.8 x 23.3 3.6 0.4 0.1 16 583432.5 817704.6 23.0 22.2 x 23.3 2.5 0.6 0.1 15 35 21.1 20.9 22.6 x 0.1 0.1 0.9 37 583112.5 817714.6 36 22.1 20.4 x 22.3 6.9 1.1 0.0 20 581822.5 817824.3 37 22.0 21. 6 24.2 x 0.2 0.0 0.5 22 582172.5 817864.3 22.0 21.6 23.8 x 0.2 0.0 1. 7 21 38 23.1 22.2 24.6 0.6 0.1 0.8 7 581592.5 817884.2 39 21. 7 21. 0 22.2 1. 2 0.1 0.2 36 583032.5 817904.1 40 21. 3 20.7 21. 9 1. 0 0.1 0. 1 . 55 583002.5 817914.1 41 21. 6 20.9 22.2 1. 4 0.0 0.0 44 583012.5 817914.1 42 21. 6 20.7 x 21. 7 5.6 0.5 o.o 35 582072.5 817924.1 43 21. 3 20.8 21. 9 0.8 0.1 0.2 46 582982.5 817924.1 AANTAL TE VERWIJDERn: SPIKES: 39 .I o s t pro c e.s .s 1 n g ~e.que.nc ,r SIAlI - OCOPT CIC (Copyillg the (Cruting CST-10-MAX optical dialr.) D t IC ) MULDMP DCB (Cruting POS (Calculatillg + DEPill 1ta11dard MAX-Ml! tilu) deviatioa) llPYST DCI DEF (Cdculatio11 (Apply SD to yea SELSPI tidal SIB-tile • (Select i 11fonat1011) StBD·tih) 1piku) 110 M11LC 01 (Tidal illto • D!:LST B PCS + DEPTH CST-2S-ICll (Delete . •piku) STB-tih snsrs IIAP-PIODUCTS (Select111g fro a SIB-data CST-10-ICI! corrected CST-2S-ICll per data chart) '~ A STMRAD EM 100 MLLTIBEA~1 ECHOSOUNDER. Installation period; March - May 1989, on board "Chr. Brunings". Operators training: May 1989. Service training: May 1989. Pre sea trials: May 1989. During these trials the following errors were established: - No data logging on optical disk. - Continuous error message transducer pitch. Continuous depth difference of 5 dm. (centre beam) versus DESO 20. The undermentioned actions were taken: - Replacing optical disk drive. - Replacing steppermotor (more powerful one). - Changed mounting of the transducer in opposite direction. (turned hull unit and transducer 180°). - Replaced Operators Computer (HP Vectra ES) for another one. (HP Vectra QS), for speeding up communication to optical disk drive. First Customers Acceptance Test: 10, 11 July 1989. Two surveys were carried out in the Eurochannel area between 33 and 35 krn.(repeatability). After this survey the following errors remained: - Continuous error message transducer pitch. - Continuous depth difference of 5 dm. (centre beam) versus DESO 20. - Optical disk utility program (to read logged data from optical disk) displays errors. It is only possible to read one section of the optical disk. This difference in depths was confirmed by post-processing results. EM 100 was not accepted. Simrad back to Horten, doing some homework ..... !! Improvements/repairs/actions during September 1989 bv Simrad. - Changed/adjusted step low for Tilt/Servo PCB, that controls steppermotor regulation. - Grounded signal cable from steppermotor-electronic to stepperrnotor in both ends. - Measured difference in dep th versus DESO 20 by means of EA 300 portable -:· . ~ ounder. - Installation of ne ;on of operators software. (incl. cor :-c-:: ue . ,0;11. Second Customers Acceptance Test: 26 - 29 September 1989. Two surveys were carried out again in the Eurochannel area between 33 and 35 km. (repeatability). The system worked properly. After post-processing a slight shift in horizontal way occurred. It seemed that in the latest version of the operators program, antenna-offsets (fixed parameters in the program) were not applied. After receipt of an improved version of the operators program and some small testsurveys it was established that the antenna-offsets were applied. On 13 November 1989 the EM 100 multibeam echosounder and post-processing system were accepted. Surveys from december 1989 - december 1990. In the above mentioned period several surveys were carried out in the Maas-, Euro- and Y-channel. During these surveys some errors appeared, mainly to the operator-software: -1) Open error; result: no data was logged on optical disk. (checked by means of optical disk utility program). Action by Simrad: - New operators program. - Changed Host Adapter PCB in HP Vectra QS for optical disk drive. These actions did not give the desired results. Hereafter Simrad replaced the following hardware-components (10 April 1990) : - Computer operators unit (HP Vectra QS) - Optical disk drive. - Powersupply to disk drive. - Cables between the units. -2) Protection error; result: after 14 survey tracks (14 files on optical disk) the EM l 00 gave an error message (protection error). The only way to continue the survey was to restart the system. Actions by Simrad: - Increase of the nu mber of files to 75. (Operator-software version 2.82). In practice this number of files will be sufficient to carry out the surveys, however the question remains why there is a limitation of the pumber of files. At this moment the EM 100 system on board Chr. Brunings works without any problems and next year the system will be intensively used for surveys in approach areas and shipping channels to Rotterdam and Ymuiden. ANNEXEC SIMRAD EM1000 MULTIBEAM ECHO SOUNDER PRE RELEASE INFORMATION Date : 9 0 . 0 7 . 1 9 2. edition SIMRAD EMlOOO MULTIBEAM ECHO SOUNDER This information is prepared for those of our customers and potential customers who have expressed interest in the latest information on the development of EMlOO/ISE. The specifications have been changed, and improved, to such extent that the product has been given a new name - EMIOOO. The information in this note replaces all information given on the EMlOO/ISE. Please note that the system specifications are still subject to change without notice. EMlOOO is under development. The first system will be delivered to the Spanish research vessel "Hesperides" during spring of 1991. 1. Main system objectives The EMlOOO will be based on the experiences gained with the EMlOO multJ.beam sounder system. It will use the same operating frequency, 95 kHz, and is intended for efficient, high precision surveys for water depths between 5 and 800 meters. The system will produce bathymetric data, and also, as an option, a geometrically corrected composite sidescan sonar image of the seafloor. The system will include full corrections for vessel movements and acoustic raybending in real time. 2. The SIMRAD EM familv of multibeani echo sounders EMlOOO will be one of the members in a system family of mult:Ibeam echo sounders . with different operating frequencies and r~e capabilities. This system family is designed such that all equipment in the survey room area is ident:Ical for all systems, while the sonar room equipment will have common spare parts to a large extent. If a ship is equipped with 2 different multibeam systems (for different water depths), the survey room equipment will be common for both systems, i.e. no duplication is necessary. Also there will be one common computer and software system, NEPTUNE, to take care of post processing of data for all SIMRAD hydrographic echo sounders. The systems can communicate with other equipment on the ship via Ethernet and/or RS232 connections. A synchronizing unit can be added to eliminate problems of interference between different acoustic devices on the ship. The systems family will in 1991 have the following members: EMlOO 95 kHz Bathymetry only 10-600 m EMlOOO 95 kHz Bathymetry + imaging 5-800 m EM12 13 kHz Bathymetry + imaging 100-12000 m A 24 kHz system, the EM24, is being planned, date of availability depending on first order. - 2 - 3. SIMRAD EMlOOO, Technical description 3.1 Transducer and beamforming The transducer is based on the EMlOO cransducer design, using a single transducer for both transmission and reception. It has the shape of a cylinder segment wich a radius of 45 cm. It is configured from ceramic scaves, each stave consisting of 5 elements with a fixed weighcing in the fore- and aft plane, and spaced by 1.25 degrees in the athwarcships direction. In the fore- and aft direction the beamforming is fixed, with a 3 degree opening angle, and the beam center direction being perpendicular to the transducer surface. The number of staves is 128, covering an arc of 160 degrees. Beamforming of the transmit pulse is applied so that energy is transmitted over the sector to be used for reception. · Receive beams are formed in real time during the reception period, according to the beaIDforming mode which has been selected. Each beam is formed as a symmetrically weighted sum of the signal received over a selected group of staves. This method eliminates any influence on the beam's direction from the sound velocity at the transducer, and makes it possible to factory calibrate each beam with an accuracy of 0.1 degree. As for the EMlOO, splic aperture is used so that measurement within each beam of the inscancaneous direction to the point of backscatter is possible. This interferometric technique is used in· order to obtain the best accuracy of the soundings for all beams that hit the seafloor at a slant angle. Depths are measured in the centerline of footprint of each beam, implying that the accuracy. _of the measurements are comparable to multibeam systems with 1 degree beamwidths. The receive beamforming modes are: A. Narrow This mode is intended for surveys at deep water, typically 400 to 800 meters. 48 roll stabilized beams with a beam spacing of 1.25 degrees are formed. The beams cover a 60 degree seccor, and will thus map a swat_h of 1.15 times the depth of water. B. Wide This mode is intended for surveys at medium water depth, typically from 100 to 400 meters. For each ping, 48 beams are formed with a spacing of 2.5 degrees. All beams are shifted 1.25 degrees every second ping, so that over a 2 ping period the system obtains % soundings with a spacing of 1.25 degrees. The measurement sector is 120 degrees, corresponding to a swath width of 3.4 times the depth of water. The receive pattern in this mode is not roll stabilized, but will follow the ship motions. C. Ultra Wide This mode is intended for efficient surveying at shallow water, between 5 and 100 meters. In the central 120 degrees of the measurement fan, the beamforming will be identical to the wide mode as described above. Outside this sector on each side the system will form 3 somewhat wider beams with 5 degree spacing. The system will produce 4 soundinS!,S based upon interferometric processing from each of these beams, to cover the extra 15 degrees on each side. The .angular spacing between each of these soundings will be 1.25 degrees. Altogether the Ultra Wide mode will generate 72 depth soundings each ping. Ove r a 2 ping period the 150 degree sector will be surveyed with an angular resolution of 1.25 degrees. The swath width will be 7.4 times the distance from the transducer to the seaf1oor. - 3 - 3..2 Transducer mounting The transducer can either be mounted in a small, streamlined blister to be welded to the hull, or it can be mounted on a retractable, pitch stabilized bull unit. Solutions can be offered for hydraulic closing of the opening in the bull when the transducer is in its upper position. From an acoustic point of view, the stabilized hull unit is to be recommended if the vessel is to do much work at water deeper than 400 meters and the area is unsheltered. · For other applications a fixed mounting is recommended, due to simpler installation, reduced maintenance, and reduced system cost. The hull unit has a 10 knot maximum survey speed specification. For the fixed transducer mounting there is no such limitation. In the spring of 1990 the Canadian Hydrographlc Service reported remarkable results from a trial survey using EMlOO with a fixed mounted transducer onboard the 65 foot SWATH vessel "Frederick G. Creed" off Newfoundland at speeds between 14 and 18 knots. 33 Sidescan sonar imaging - Sidescan Sonar Subsystem (SSS) When combining all the receive beams of the system, it has about the same system geometry as a sidescan sonar. The fore- and aft beam angle of 3 degrees is more than most towed sidescan sonar systems, so the image will not bC as detailed. On the other hand the system has knowledge of the detailed bathymetry of the crosstrack strip of the scafloor which is being imaged each ping, so that a correct geometrical calculation can be done. All image processing of the SSS is digital, and the data can be recorded digitally for processing into composite sidescan maps (to be supported by NEPTUNE postproccssing system). The actual image line for each ping is produced by comb~ the receive signal envelope from all beams. Each beam contributes with a small timeslice of its signal. namely the part where the beam ruts the bottom. Compensation is made for the beampattern, to eliminate disturbing effects in the image. 3.4 Survey room equipment The survey room equipment is identical for all the multibeam systems. The main units are: Operator console. This unit is used by the operator for controlling the sounder operation, and to display the bathyrnetric data produced by each p1Dg, as well as other data. This unit will also convert ranges and angles to depths and crosstrack sounding positions, by using the available information on the sound velocity profile through the water column. The operator console can also drive a track plotter to produce realtime documentation of the area whlch bas been surveyed, and it has an interface to the navigation system computer. It can record bathymetric data on optical disk, and it can transmit the same data to other computers via Ethernet communication. Furthermore it communicates with the OAS and Sidescan subsystems. Quality Assurance Subsystem (OAS) console The Quality Assurance Subsystem (OAS) has 2 different aspects: A. To assist in the cali'bration and checkout of system consistency before a survey B. To produce real time documentation of the bathymetric data whlch are produced by the sounder. These real time presentations comprise colour coded depth plot, contour strip chart, water fall pr sentation of crosstrack profiles, and a coordinate fixed display which paints each sounding < - coded into a geographic frame. - 4 - The OAS colour display is mounted in a console of the same type and size as the Operator console. A colour recorder is attached in order to produce hardcopies of the same data. OAS/SSS console If the Sidescan Sonar Subsystem option is installed, the Sidescan colour display will be mounted on top of the QAS console. This is a convenient arrangement for the operator, and it saves floor space in the survey room. The sidescan sonar display processor is controlled from the QAS menu system. It will do the combining of data from the different beams, pcrform the geometric corrections, and also compensate for yaw movements of the vessel The result of the processing is presented as colour coded intensity pixels on the display. The same presentation can be printed on a colour recorder. In addition the processor has interface for a greyscale recorder (Waverley or EPC). The sidescan sonar data can be recorded on optical disk.. - 5 - 4. Technical specification Transducer: Size: 400 x 900 mm Weight: 130 k (in air) Shape: Cylin~er segment No staves: 128 Transmission: No transmitters: 128 Total peak power: 4.5 kw Frequency: 95 kHz Pulse length: 0.2 - 2.0 ms Source level: 228 dB Reception: No amplifiers: 128 TVG: Digitally controlled AID conversion: U bit Quadrature sampling Beam.fanning: Narrow mode No beams: 48 Beam spacing: 1.25 deg Sector covered: 60 degrees Swath width: 1.1 x D Water depth: 400-800 m Wide mode 1 ping 2 pings No beams: 48 96 Beam spacing: 2.5 deg 1.25 deg Sector covered: 120 deg Swath width: 3.4 x D Water depth: 100-400 m U1 tra Wide mode 1 ping 2 pings No soundings: 72 120 Beam spacing: 2.5/1.25 1.25 Sector covered: 150 degrees Swath width: 7.4 x D Water depth: 5-100 m Transceiver: Size: H=l600 mm W=600 mm D=.565 mm Weight: 130 kg Gyro interface: Synchro 50-400 Hz, 26-120 V VRU: Hippy 1208 or equivalent Hull Unit: Optional, retractable transducer, pitch stabilized. Max 10 knots survey speed. Size: H =2900 mm W=l0.50 mm Weight: 560 leg - 6 - Main Computer: Specifications not settled at this time. Operator Console: Size: H =l300 mm W= 540 mm D=1040 mm Clock inJ?Ul: RS232C Position mput: RS232C, UTM and/or LAT/LON Sound velocity: RS232C Data output: Ethernet UDP protocol Data recorder: Optical WORM, ruggedized 5 1/4" removable cartridge 200 Mbytes per side Track Plotter: Calcomp 1023 Al size Swath coverage or Y essel poSition track Quality Assurance Subsystem Console: Size: H=1300 mm W= 540 mm D=1040 mm Functions: Colour coded depth data Waterfall crosstrack profiles Strip chart contour map Coordinate fixed display Hardcopy to 8" colour printer Sidescan Sonar Subsystem Display: Mounting: On top of OAS console Functions: Scrolling graphic display Scaling etc through OAS system menu. Hardcopy on 8" colour printer. Interface for greyscale recorder Si111r ad EM1000 S} 1 ~ler11 t:o11figuralio n SIPESCAN/ QA C_ONSOLE . :·.·. ·: ·:- ;'.:'; MAIN COMP UTEH OPERATOR CON SO l..I-: c~ uii " i~l~~i~ \ ... ::.~ .\ --·-·-- -~ "~~ J - : ~ I '- EXT.C LOC K -~ SOUND VEL. -~ ( ' COvERAGE PLOTTER I tU!:/.;;)}T~CK · .....•. HEAVE.HOU. & ~ PITCH-SENSOR TRA NSCEIVER GYRO COMPAS S ~ 't ::· SOUND VELOCITY METER · STABILIZED HULL UNIT NOTE: Operators unit ulso contains Dutalogger D OPTIONAL EQUIPMENT 2200 1060 1700 96 0 ~ tTT"I , - - - f I ,... I, i ,....,"'' ------·-_ -_ ---- 1 - - -f-+l.--~ i,_ - - - ..J .., ._, ,, I I ~ · 0 - - .:: - - - - - : ! ,, .,.,,.,,,'- .., ' I ~ ·~ i I I I LiJ ! .. I 820 400 I I /?-',"'--, I ~~rL ~.J"1~~ I '--'--, \ ' v 0 \ ~I ~I , I~ 0 et: <{ I \1 I I 0 0 _,I _ c(-/' 1126 I I I F======:;:L__ _j REV./SIGNJ I I I I I I •DATE I i I I I I I PR OJ. h {.. ~ UNLESS OTH ER WIS E STA TED , TOLERANCE. -~~ n rYlr.l/;\f(j\ METHOD - -:J ' -S~ [)IM .: - THHCA D: - (.Y'V eJI J I ~ SCALE OU !LINE OIM EN SION ES l-"SH_C'""E'-'-T_1'--'-or'--1----~ DRAWN 90.0 6::l5i- Q:_ HULL UNlf W. TRAN SD UCER 830-065975 r A CHECKED I --- A.P PPnvrn r· •' 1 '"' C"" " 1-· • 1n <-Q") - 1,9 • l.A:./v 1} • .... \. ...L1 " ' :. ) ANNEXED ULTRA WIDE SWATH DEEP SEA INTERFEROMETRIC MULTIBEAM ECHOSOUNDER WITH SEA BOTIOM IMAGING SYSTEM SIMRAD Subs ea SIMRAD S 0 N A R IMAGING S Y S T E M Stein Asheim Simrad Subsea FEMME Southampton December 1990 i'1SIMRAi: Subsea . Sonar Imaging System. INTRODUCTION. The sonar imaging system performs a real time visualization of the backscatter from the sea floor. The sonar image is based on sampled data from the same swath as the depth profile is calculated. T~e sonar imaging system utilize this for positioning the backscattrer samples in between the known beam center· positions. The result is a continuous scan of the sea floor along the swath for each ping. All these scans are stored in a large buffer inside the computer. The data can be saved on a WORM disk, and be displayed on the screen and plotter in colour code, or grey scale. The real time display can be set to run with the same inline scale as the QA system so a comparison between the two images can be made. All operator interactions are done from the QA console, and the sonar imaging system is thus controlled via the QA system. Hard copy facilities are available, as well as scaling of all axis and intensities. In addition to the Paintjet printer used, it is possible to connect a 4000 point wide greyscale plotter to the system. This will increase the resolution compared to the 640 points used on the Paintjet. When the positioning of the individual samples takes. _place, the line c ourse, the heading and the speed is used. The line course is taken to be in the upward direction of the screen. For dual systems, both systems are integrated in the same display, but it i s possible to displ ay one side only. The whole display width is then used for the desired side. Post processing of sonar imaging data will be developed a s a part of the Neptune post processing system. This option in Neptune will be available in 1992. . SONAR IMAGING INPUT DATA. The multibeam echo sounders that c a n provide data for the s onar i maging system are EM12, EMlOOO and EM38 0. These systems a re desi gned to send backscatter as wel l as position and depth telegrams to the sonar imaging system. The position telegram contains information of the vessel position, heading and speed. The depth telegram has all the information of the beam center positions relative to the vessel . Utilizing these two telegrams, the swath can be pos i tioned in an accurate way. Knowing the geographic position of the swath make it possibl e t o position all the backscatter samples that are connected to a beam. These samples are actually the samples in time before and after the sample of the beam center. For each beam, samples are used in the interval from the half way to the neigbour beams. Th i s makes it possible to avoid overlap, and to u se the samples closest to the geographic point they are connected to (the be am center). · The EMxxxx systems have samples for a wide time area around each beam center. Some times the situation arise, that the' neighbour beam does not have any valid data. The sonar imaging system t hen extend its region to half the way to the next v a l id beam center~ This is possible because we have more samples t han just one degree around the beam center. For each beam we have sampl es for at least 3 degrees around the beam center. Al so at the outer edges of the ·swath · the samples ·are used as far as they reach. The positioning of the samples are done linearly between the beam center positions (linearly · in 3 dimensions) . The next major release of the sonar imaging system will use the phase to position the samples where the phase is good enough. The backscatter samples of the sea floor are stored in a buffer inside the computer. This buffer is dimens i oned so tha t t he g i ven with of the displ ay is divided into 4000 cells across the vessel orientation. Along the direction of the vessel , there a r e 100 cells dimensioned to keep all values i nside t he buffer i f the heading relativ e to the line course is less than 10 degrees . SIM,RAD Subsea ' SONAR IMAGING DISPLAY. The real time sonar imaging display is presented on a colour screen above the QA system (double console). The display utilize t he whole screen width (640) points for the backscat t er image . Since the internal buffer is larger , a dat a reduction takes place before output to the screen . The dimension of the internal and screen buffer cell can be inspected a t the lower part of the screen. The top of the screen contai ns information of the time a nd ping number of the data under process. The major part o f the screen is occupied with the sonar image itself. Here every scan is plotted out. The a long line direction is upwards on the screen with the vessel i n the middle on the upper part of the screen. As the vessel moves forward, the image of the sea floor scrolls down the screen. The vessel is thus in a fixed position on the screen. · At the bottom of the screen the setup paramete rs are shown. ( see figure at the end of this document. The operator can rescale in the axis "across", "along" and "amplitude". The scale used is d i splayed in the information field at the bottom of the screen. The way tho update the internal buffer can be sel ected from 3 different modes: * Last Last value to hit a buffer cell- is used. * Weight The mean of the cell value and the new value is used. * Peak The peak value in the cell is used. The display can be run in colour or grey scale using 14 dif f erent levels for the amplitude (db scale). '" -?' SIMRAD Suosea SONAR IMAGING PRINT. The sonar imaging system is equipped with a colour Paintjet printer. This printer can be run in colour or grey scale mode. The display on the screen is scrolled out to the printer, pixel by pixel. It is possible to run colour on t he screen and g rey scale on the printer or the other way around. The operator can give printer commands such as: * Hard copy Copy of the whole screen is dumped to the printer. * Information A copy of the information part of 'the screen is dumped to the printer. * Scroll The system scrolls out data to the printer continuously. * Off The printer is turned off. For better resolution, it is possible to connect a grey scale plotter with 4000 point resolution to the system. This plotter takes data from the internal 4000 point buffer and displays it. For a dual EMxxxx system, one side at the time can be connected to the printer (both paintjet and grey scale). This doubles the resolution of the image. DATA STORAGE. The data from the sonar imaging system can be stored on optical WORM disks. The system creates a file as the logging is turned on, and loggs a certain amount of data before it closes the file and creates a new one for further logging. The file name is displayed in the information field of the sonar imaging system. There are two files that are stored with sonar imaging data. The sonar data itself in one file, and a file with the collection of all headers in the sonar data files. The later file is meant for quick look through of the data. LY SIMRAD Subse zi Composite Beam Sonar image surveyed by IFREMER on Vessel l'Atalante Time: Dec. 1990 SI "RAD DU2 DUAL SSU Vt. 81 SP: !HA pp: 1164 TI ttE 82/ 12/98 10:20:52 ·, ·1: I• + +++ - . . .. ~- ' • Reflectivity: . •4r·~· ,.. -"ii ~ J!. Step: 1.5 db -48 dh -za.s db .. ;:i; ai;:: Ac tic 1088"' Speed : Hone Gain None Pix.: 141.0 * 46.9 Al t ic 1880 s Head. Heme Storage: OFF Bur.: 52.9 * 7.6 Update Last Course: Hone ANNEXEF SIMRAD SUBSEAA/S SERVICE RESOURCES HYDROGRAPHY DPT. SI.MRAD SUBSEA A/S. SERVICE RESOURCES HYDROGRAPHY DPT. MANPOWER: SERVICE / TEST MANAGER: Sverre Skagen TEST / FIELD ENGINEERS; Geir· Skogen Terje Moe Frank Wilhelmsen TEST ENGINEERS; Jon Kvisle Rune Olsen SERVICE-EQUIPMENT: ·l complete EM-100 ( also for rent Incl. Power Supplies, Display- units, Printers etc. Complete Hull-unit w. TD 1 complete EM 12 Transducer. Complete sets of PCB's for: * EA 200 * EA 300 (P) * EA 500 ( P) * EM 12 PRACTICAL USE OF SERVICE SUPPORT: Service available by phone 24 hrs a day year arround: * Working hours: + 47-33-44250 * After working hours: + 47-94-51545 * ( Telefax: + 47-33-44424 ) * ( Telex 70391 simh ) NB! New 24 hrs. phone no. available early 1991. ANNEXEG MAINTENANCE AGREEMENT 1 Rev. l Date:90.12.14 SIMRAD MULTIBEAM ECHO SOUNDER SYSTEMS MAINTENANCE AGREEMENT between (Buyer) and Simrad Subsea A/S SIMRAD 2 Subsea CONTENTS: Page 0 Parties 3 1 Equipment description 3 2 Validity 3 3 Agreement terms 3 3.1 General 3 3.2 Software 4 3.3 Practical use of maintenance support 4 3.4 Price and payment 5 4 Obligations of the Buyer 6 5 The agreement does not cover 6 6 Sale of vessel/equipment 6+7 6.1 Buyer moves the equipment from one 7 vessel to another 7 Force Majeur 7 8 Di sputes and gowerning law 8 3 This Contract is a mutual agreement between the company ~~~~~~~~~~~~~' hereafter called Buyer and Simrad Subsea A/S, hereafter called Simrad. 1. Equipment description. The Agreement covers equipment installed at The Agreement covers maintenance of equipment and software for the following systems: 2 . Validity. The Agreement is valid for 1 year from date of signature. The Agreement will -automatically be renewed for one (1) year at the time, unless a written termination is made one month before the date of renewal, by one of the two parties. Irregularity with payment may cause dismissal of this Agreement. 3. Agreement terms. 1-:_1_ General The Agreement is to be looked upon as an extension of Simrad's guarantee obligations, referring to point 9 in "Simrad' s General Terms of Sale" (Attached) . All parts of the system, included in the Agreement, are covered by this guarantee. Damages on transducer and transducer cables, hereunder leackages, are covered by this guarantee, provided the damage is not caused by collision with other objects or operation outside the specified velocity range. SIMRAD 4 Subsea 3.2 Sof tware For software in transceiver and operator unit, the following applies: Reported errors and defects according to specification, will be examined and repaired on basis of error reports from the users. New software will be tested and sent to all users having a maintenance contract. Improvements in software, developed by Simrad, will in the same way be available at no cost for the users having a maintenance contract. 3.3 Practical use of Maintenance support Simrad's service concept is available by telephone 24 hrs a day. Normal working hours 08.00 - 16.00: Simrad switch-board +47-33-44250 Outside working hours: Service phone +47-94-51545 Simrad will have technical personnel available in Horten at all times, to handle all requests from customers and to carry out necessary actions. This Agreement's fixed allowances include maintenance carried out at suppliers premises. Expences connected with maintenance at customers premises are covered accor_ding to point 9 in "Simrad General T.erms of Sale" (Attached). 5 3.4 Price and Payment The yearly maintenance fee is to be calculated as follows: 6% per year for the first NOK 3.000.000,- purchase price. Plus NOK 10.000,- per mill. above 3 mill. eg. EMlOO (3 mill.) 6% = NOK 180. 000 ,- per year II EMlOOO (4 mill.) 4,75% = " 190.000,- per year " EM12 (15 mill.) 2% = " 300. 000 ,- per year (The price of New Software versions without Maintenance Agreement will be NOK 65.000,-) The fee can be adjusted per January 1st each year, in accordance with general price development. The maintenance fee is to be paid net at the beginning of each quarter. 6 4. Obligations of the Buyer. The Buyer is to name at least one person that has the responsibility and authority to requisite assistance and to make decissions related to this Agreement. The Buyer undertakes to treat and use the equipment with normal caution, and in accordance with the procedures given in the handbooks. The Buyer further undertakes to execute preventive maintenance and inspection of mechanical parts in accordance with given procedure, and also to do his utmost to reduce the extent of the damage that might have occured therefrom. 5. The agreement does not cover: expences for docking, workmanship or sea trials to test the equipments functions and accuracy, any possible expences and responsibility towards the third party, caused by equipment failure. expences related to supplementary equipment necessary to utilize the new upgraded software versions, expences to cover travel and accomodation for Sim.rad personnel, referring to point 9 in "Simrad ·General Terms of Sale", maintenance work initiated by Buyer caused by operator fault or faults on equipment not supplied by Sim.rad. 6. Sale of vessel/equipment. By sale of vessel and/or equipment, the new owner has the opportunity to negotiate with Simrad to continue the Agreement. Buyer then undertakes to prevent Simrad from any economical losses caused by the sale. 7 This means that the Buyer is obliged to pay the fee for the commenced quarter, i f not a new agreement with the new owner has to be signed at date of sale . After this, the mutual obligations between Simrad and Buyer come to an end . ..§..:.1. Buyer moves the equipment from one vessel to another. If Buyer wants this Agreement to be vali d, without intermission, Simrad must be notified and called for at demobilization/ mobilization of the equipment. 7. Force Majeure Force Majeure is defined as circumstances beyond the reasonable control of the parties, such as war, catastrophies caused by nature, delays in delivery from subcontractors, lack of raw material or energy, shortage of labour, strikes-,- lock-out, governmental regulations, obstacles in transportation or lack of means of transportation. Technical difficulties shall also be regarded as force majeure, provided that the difficulty is reasonable unforseen and ma kes it extremely difficult to deliver within due date . The party wi shing to c l aim relief i n a ccor dance with this clause shall notify the o t her party i n wri t ing wi thin 3 days after such i ncid ent ha s occured . The noti ficat i on shall descri be the nature, complexity a nd the expected cessation of the obstacle. The obligation to del iver shal l be suspended as long as the force majeure incident endures. Force ma j eure shall release SS from the obligation to deliver. 8 8. Disputes and gowerning law If any disputes between the two parties concerning the understanding of the contract occur, the parties shall attempt to solve these through negotiations. In case of dispute between the Purchaser and SS concerning this contract, the parties shall endevour to settle such amicably. If the dispute is not settled within 4 weeks after it was first raised, the dispute shall be submitted to arbitration in Oslo according tho Civil Procedure Act of August 13, 1915, no.6, chapter 32. Norwegian law shall apply. This Agreement is valid from date: Date of sign. Date of sign. Purchaser Supplier ANNEXEH NEPTUNE POST PROCESSING SOFIWARE ti N E P T U N E P 0 S T P R 0 C E S S I N G SOFTWARE F 0 R S I M R A D E C H 0 S 0 U N D E R S Stein Asheim Simrad Subsea A/S FEMME Southampton December 1990 SIM RAD Su osea INTRODUCTION. The new Simrad Subsea software for post processing of echo sounder data is designed to process data from all types of Simrad echo sounders. The product can be delivered in two "sizes'', one meant for the single beam market and one for the multi- and single beam market. The difference between the two are the number of points that can be processed at a time, and the price. On the way to Neptune, we have converted SPlOO to UNIX, and it is now working on Sun Sparcstations. However, Neptune is a large step forward compared with the SPlOO SW earlier used for post processing of EMlOO data. The system will have ali the functions of the SPlOO plus a lot more. The major achievements are: * Interface to all Simrad echo sounders. * Data cleaning and quality control on raw data and point data (interactive tools using graphics). * Conversion module between datums and projections. * Interfacing to different exchange formats. * Processing of UTM and lat/long positions. * Workstation functionalities (X-window/Motif, Graphics, processing speed, Networking, Unix) * Relational database. *Recalculation by exchanging the sound profile (optional). Neptune is an integrated post processing system, but it is possibl e to connect other SW products to the data on several levels in the processing cycle. The format of the data files at these process stages are under def ini ti on together with SW producers in Canada. These producers are developing SW that start their process on data from the Neptune intermediate files. However, a full integrated post processing system is available if the user choose Neptune. SPECIFICATIONS. INTERFACE TO ALL SIMRAD ECHO SOUNDERS. The SPlOO could only process data from the EMlOO system. Neptune will process EA300/EA500 data as wel l as EMlOO, EMlOOO and EM12. For the EA300/EA500 echo sounders, the data formats are rather free , and we have so far defined the most used formats. All used formats will be implemented. Current status * EMlOO finished * EM12 finished * EM300 implementing * EMSOO implementing * EMlOOO not started , SIMRAD Subs ea DATA CLEANING AND QUALITY CONTROL. There are two levels of data cleaning and quality control that shall be available in the Neptune system. First on the raw data, and then on the data produced by merging positions, depths and tide information to a free point data set. Raw data cleaning contain visualization of the raw data, and the possibility to run the data through a filter. The raw and filtered data are plotted in a window, and the operator can accept the filtered data by pressing a button, or do new filtering or manual editing on the data before accepting it. The manual editing consist of purging of selected points, select a data sequence for automatic interpolation and insert new data points. This editing involves position track (both coordinates), individual swaths and single beams along a survey line. A specification of the window layout is shown at the end of this paper. Statistics on the raw data will be performed to spot swaths or beams that might contain errors. Graphical displays of the statistics will be available. These tests will often be studied first, before going into the raw data in more detail as outlined above. The final data cleaning and quality control is done on the point data set. The area of the data to be considered is -divided in cells with size defined by the user. The cells are oriented north and east. The data are binned in each cell, and statistics are done within the cell. To find the standard deviation of the points in each cell, a best fit plane through the data in the cell is calculated. The plan can be tilted in any direction inside the bin. The STD is then calculated relative to this plane. Graphical displays of the statistics will be available. The user can interactively select the data in each cell that should be purged. Automatic purging of data based on user specified criteria (i.e. max allowed STD etc.) can be done. The visualization is made over a geographical window specified interactively with the mouse relative to the full survey area. Another way is to specify all lines, or a specific line for the display. Display formats are : - Raw depths colour coded. Reflectivity colour coded. Bin data mean values colour coded. Bin data STD colour coded. Selection: - Single sounding. - Single bin. - All sounding inside a window. - All sounding with STD > value. Purge options - Purge all selected sounding inside a window. - Unpurge all selected sounding inside a window. Current status: * Raw data filtering Written and tested code. * Raw data editing Specification finished. * Binning Specification phase. Additional data cleaning and thinning can be done in the IRAP part (statistics, clipping and STD rejection). CONVERSION MODULE FOR DATUM AND PROJECTION. Neptune will contain a module for transformation between datums and projections. Datum transformation will take place between several widely used datums, and also perform transformations based on user defined transformation parameters. The module can be used on different stages in the process, but is meant to serve the purpose of transforming the data before gridding or binning. The documentation of the routines that are used in datum shifts and projections will be detailed. This is to let the user inspect the mathematics used. Current status: * Datum Written and tested code. * Projection Written and tested code. INTERFACING TO DIFFERENT EXCHANGE FORMATS. After the data cleaning and quality control has taken place, or if no correction actions have been made to the data at all, the data are s t ored in a survey file format. This format is under discussion (Simrad/UNB) to find a common file format. For the purpose of connecting other SW products to the Neptune SW on this level we have an exchange file format module to produce xyz(IRAP) files, xyzt(other systems) or any other formats that might come up. The intension is to be able to support the formats of all major vendors of SW, who start their product at the xyz level of data. Current status: * Exchange formats Specification Phase. * Implementation Not started. UTM AND LATITUDE/LONGITUDE POSITIONS. Neptune. will accept position data in UTM and latitude/longitude. Current status: * UTM Implemented. * Latitude/longitude: Implemented. SIMRAD Subsea WORKSTATION FUNCTIONALITIES. All Neptune SW shall run under X-window using Motif. Menus wi l l use modern widget, and 30 visual effects. The speed of the modern work stations will be available, and the user can upgrade the HW over a large range of workstations to speed up the processing. SCSI port, ethernet and serial ports are available so that most peripher equipment can be connected. Current status: * X-window/Motif Implemented for IRAP and RDB interface. Specified for the rest of the system. * UNIX Implemented. RELATIONAL DATABASE. The relational database of Neptune was designed last sununer in cooperation with the Norwegian Hydrographic Service. The database will help the user to store and retrieve data efficiently. The information of the processes are also stored in the database. Also all kind of HW and SW logistics are available from the database. The structure of the database is shown in a diagram at the end of this paper. Current status: * RDB design Implemented. * RDB interface Prototype. * RDB Sybase. RECALCULATION BASED ON NEW SOUND VELOCITY PROFILE. This is an optional module for Neptune. It will be possible to recalculate the position of every beam using a different sound velocity profile. The basis of this calculation is that we start from the time used for the sound pulse to travel through water down to the bottom and up again. The new sound velocity profile must then be given by the user through the user inter face of this module. Current Status: * Calculation Implemented under RMX * Porting to UNIX Specification phase. * User interface Specification phase. SIMRAD Subsea FUTURE DEVELOPMENT OF NEPTUNE (start autumn 1991) When Neptune phase 1 is finished in the summer 1991, we will start on the development of Neptune phase 2. That phase will concentrate on "close to real t ime" processing and sidescan processing for integration with the bathymetry. We also see the need for further development on data reduction, quality control and data cleaning. Specification of Neptune phase 2 will start during the summer 1991. The "close to real time" processing is based on data coming into the computer via ethernet as the data acquisition takes place. The data can then be processed in small batches to gradually build up the sea floor as the survey emerge. CONCLUSIONS. Neptune will be available during the summer 19 91, with new functionalities for data cleaning and quality control. The new • user interface will also contribute to an efficient use of the product. The processing tool described in this document is certainly a major step forward for the users of Simrad echo sounders all over the world. We would like to encourage our users to bring forward the needs you see for a processing tool like Neptune in the future. You will then be able to influence the specification of Neptune phase 2, and 'to ·some extent the development of Neptune phase 1. Exchrulgf' file vis u a 1i -,,,e formnb PHASE 1 edit Interfacing 1/FP Recalculate for Data Position sound velo ·. cleaning + wor~- Raw time s tation input D data ' Decode Datum 3D Paran1ele rs conversion vis ual. depth D data- Calculate grams soundings Survey Binning file IRAP D format D Tidal data Visualize/ Input Bin purge CARIS file D format D Database D=file for database reference function *=temporary file I Person I I Role .. J I Company I fe$g)~~g)(i1Cl l ___A Vee1tel Com ,...... c~-;:_s_~- Isr~k I puter sw " '"'eili";on- Ro,,,.neible_ Ic u:.• 11:"" I /l / " L-tt ' ' ~_m~~ ~~ / '\ ~/ I ' r----"----1 .-----'-----, ::iou. nd 8 // POS Po.rl o f Ac qui Comp Area Poinl I, _;;m I I, _·;;m I Doplh I I •"•filo B produc eilion oeed L_ NEPTUNE Ph a::;e 1 SER diagram SA : 12/ 12/90 UTM (E asting) "Tj -r """3 """3 t:::::l -s:: ::0 t:::::l -::r t:::::l c0 0 ., -"""3 I .._, "Tj c r r if)_ -N t:::::l ;i:... t::O c ::0 """3 t:::::l >< ----3 ANNEXE I HYDROGRAPHIC APPLICATIONS OF INTERFEROMETRIC SIGNAL PROCESSING* • Disponible au bureau de Bernard Tessier (B525) . ·- 404.3/1 FIG XIX INTERNATIONAL CONGRESS H E L S I N K I, F I N L A N D, 1 9 9 0 HYDROGRAPHIC APPLICATIONS OF INTERFEROMETRIC SIGNAL PROCESSING HYDROGRAPHICHE ANWENDUNGEN DER INTERFEROMETRISCHE PROZESSIERUNG APPLIC~TION$ HYDROGRAPHIQUE DE LA SIGNAL PROCESSION INTERFEROMETRIQUE DR.ING. FREDDY P0HNER & EVEN 8.LUNDE, SYSTEM ENG. SUMMARY Acoustical measurements based upon the use of interferometry is a technique which has been taken into use in some recent sonars and echo sounders. The first part of the paper describes the principles and limitations of this method. The last part of the paper . describes some instruments making use of interferometry inside preformed beams, to visualize what can be obtained by the technique. · ZUSAMMENFASSUNG Acoustisches Massprinzip basiert auf die Anvendung von Interferometri ist eine Technik das in Sonars und Echolot gerade am Amfang ist. Der erste Teil dieses Zusammenf assung beschreiben die Prinzipe und Beschrankungen dier Methode. In dem zweithen Teil werden einige Instrurnente, die interferometri innerhalb strahlf ormung verwenden beschreiben, urn die mog lichkei ten dieser Technik zu vizualizieren. RESUME La mesure acoustique reposant sur l'utilisation de l'interferometrie est une technique utilisee sur quelques sondeurs et sonars recents. La premiere partie de l'article decrit les principes et limites de cette methode. Dans la derniere partie de l'article, il est decrit quelques instruments faisant usage de l'interferometrie dans des faisceaux preformes afin de visualiser ce qui peut etre obtenu grace a cette technique. ANNEXEJ SIMRAD EM380 MULTIBEAM ECHO SOUNDER SYSTEM DESCRIPTION* * Disponible au bureau de Bernard Tessier (B525) SIMRAD EM 380 Multibeam Echo Sounder System Description P2236E/O November 1990 .::ii mrad Subsea A/S Telephone: +4 I 33 4-t 250 Strandpromenaden 50 Telefax: +4 7 33 44 424 P.O.Box 111 Telex: 70:39 1 simh n :-.;-3 19 1 Horten, Norway Sub~·sea ~ SIMRAD EM 380 P2236E/0 System Description Page 1 CONTENTS: 1.0 GENERAL 1.1 Multibeam Technology: Surveying the future 1.2 Major cost savings and benefits 1.3 Multibeam Technology: Superior performance confirmed 2.0 SYSTEM ·DESCRIPTION 2.1 Transducer 2.2 Transceiver 2.3 Main Computer 2.4 Operator Unit 2.5 ·- oata recording 2.6 Real Time QA System 2.7 Sonar Imaging System 2.8 Track Plotter 2.9 Interface to navigation computer 2.10 Heave, roll and pitch sensors 2.11 Gyro Compass 3.0 Postprocessing AND MAP PRODUCTION EM 380 TECHNICAL SPECIFICATIONS SIMRAD Subsea A/S reserve the right to alter specifications without notice. Simrad Subsea NS Horten - Norway ANNEXEK LISTE DES COMMUNICATIONS PRESENTEES A HYDRO 90 HYDRO 90 PROCEEDINGS HYDRO 90 is the seventh biennial Symposium of the Hydrographic So ciety. COJITKITS. Paper 1. George A.Walker Jnr. The Status and Future of Cooperation in World Hydrography Paper 2. John Jaaieson. The Hydrographic Surveyor as a Professional Surveyor in the Law Paper 3, Galo Carrera. International Maritime Boundaries Paper 4. Raymond Tough The Legal, Financial and Operational Aspects of Boat Charter Paper 5. Bjorn Ursin-Hol.a Multi-Beam Bat~ymetry versus ROV Measurements Paper 6. Rigel Kelland Seismic Streamer Tracking Paper 7. Patrick Hally and Bernard Tessier Practical Experience with the Simrad EM-100 Swathe Sounding System Paper 8. C.Brossard & J.P.Helard Densitometer Assisted Hydrography ('DAH') Paper 9. Brian Russell Hovercraft for Hydrographic Surveying Paper 10. Dr.David Pugh Global Sea Level Monitoring Paper 11. Dr.Laurence Boorman The Environmental Effect of Changes in Climate and Mean Sea Level Paper 12. Captain Barry Vaughan Observations on Deep Ocean Currents in the North Pacific Paper 13. Dr. Swsan Gubbay Environmental Coastal Zone Management Paper 14. Dr.Philip Barber The Monitoring and Management of Coastlines Paper 15. Prof. V.A.slcenazi, D.G.Basker and Dr.T.F.Baker Monitoring Mean Sea Level with GPS Paper 16. John Radzisdevsld. The Civil GPS Information Centre Paper 17. Professor Paul Cross Differential Offshore Positioning/Block II GPS Satellites Paper 18. Dr.P Smlllerfield Offshore Positionong by Differential GPS Paper 19. Nigel Gooding Nautical Charting and GPS Paper 20. Dr.J.Vulder, Prof.J.Spaans and H.G.Stasson Implementation of a Ship's Dynamic Model in an Integrated Navigation System Paper 21. Jaaes Bruce Electronic Sailing Directions Paper 22. Dr.Peter Slleaton '> The Electronic Chart - An Interactive Video Approach Paper 23. Hugh Agnew The Electronic Chart - The Yeoman Paper 24. Mr.A.Kyrkjeeide The Electronic Chart - The SEATRANS Project Paper 25. Tony Bates Contractual and Measurement Aspects of Dreging Operations Paper 26. David Taylor High Resolution Seismic Profiling for Dredging Operations Paper 27. Gordon Foy An Automated Survey System for Dredging Paper 28. Jan van Rensbergen The Detection of Sediment and Beach Movement by Remote Sensing ANNEXEL LISTE DES EXPOS.ANTS A HYDRO 90 HYDRO 90 EXHIBITORS University of Southampton 18-20 December 1990 BOSTON Il'iSULATED WIRE (LK) LTD Stand :" MK SERVICES Stand :"lio 47 OCEA:"ROt.:TES M OBELL Stand ~o 22 24 Eden Way, Pages Ind ustrial Park, Billington Road, Unit 20A, Picton House, H ussar Court, Brambles Farm, Leighton Buzzard, Bedfordshire L U7 8TZ, UK Waterloovllle, Hampshire P07 7SQ, UK Tel : 0525 382333 Fax: 0525 850073 Tel: 0705 261212 Fax: 0705 269852 MK Services will be exhibiting some new products recently added to Specialising in inshore hydrographic surveys, environmental surveys their range of geophysical and marine instrument equipmenL These and metoccan studies, the company is able to provide a complete range include Delphi, a digital real-time data acquisition and processing of services to port and harbour authorities, marine and consulting system specially designed for high resolution single charinel seismics, engineers, oil and gas exploration and production companies, and indcpc:ndcnt of the source being used. others operating in the marine environment Also shown will be Widcscan, the latest dual frequency sidescan As pan of the Swire Group, the company isable to draw on resources 5Qnar from Dowty Maritime (Waverley) Division, which features of Olber Group companies on an international basis with particular switchable transmit frequencies and ;;~l~ e lengths, and Wideline, emphasis in the fields of meteorology, oceanography and marine rcprcscnting the ultimate in thcnnal linesc '-'1 recorders with a foll 19- instrumentation. Representatives will be available to discuss the range ilach wide recording medium and an ext ..! range of inpuu. of available services. 2 OR~STON TECHNOLOGY Stand No 37-38 navigation receivers from Magnavox as well as hand-held units from 3A \fhe Newlands, I nglemlre Lane, Hull Ht.:6 7QT, UK Magell an. ' Tel : 0482 804104 Fax: 0482 803955 Representa t ive~ will be av a!lablc to discuss and gi ve advice on us ing GPS for any type of project or situation at sea, on land or in the air. Ormston Technology will be exhibiting in cooperation with Sercel elements of the Sercel range of precise electronic nJvigation and location equipment including Syledis S medium range circular and pseudo-range system and A.11yle, a new hi ghly accu:·ate multi-user PlJLSAR MEASURI~G SYSTEMS Stand No 30 equipment for use over ranges from 5m to 12k:m; new ranges of PO Box 197, 4 Local Board Road, Watford, differential GPS r..:ceivers will also be shown. Hertfordshire WOl 3TP, t;K Spec1iic units on display include SB-5 beacons and Vega receivers, Tel: 0923 371461245651 Fax: 0923 244345 Axyle beacons and receivers and OOPS NR-53 five -charmel, NR-103 Pulsar Measuring Systems will be displaying a series of laser rangefin· ten-channel differential receivers and NR-104 ten-channel differential den manufactured by IBEO of Hamburg. These include the Pulsar 500 survey receivers. and 1000 systems capable of measuring ranges up to SOOm or I 000m without reflectors to light-<:oloured surfaces to an accuracy of ±5- PAUL CLASPER & ASSOCIATES Stand No 7 1Ocm. Their range can be increased with the use of prism reflectors up 2 :"forth Parade P~e, Bath BAl lNX, UK to 8km with a single prism. Beam width at lkm is 2.5m. Tel: 0225 444561 Fax: 0215 422187 Also being exhibited is the Posifix rangefmderincorporating similar Paul Clasper & Associates is an independent hydrographic survey features, although it can be used with reflectors and has a shorterrange consultancy founded in 1984 to provide a comprchertSive range of of 1500m using prism reflectors. The beam width al !km is 3m. All project management and engineering survey services to the interna products are shown together with the AP 100 angle encoder system tional oil, gas and offshore construction industries. A full project with which they are compatible. management team is available, based either in client offices or at the Company's Bath headquarters; individual personnel can also be sup plied to undertake specialist services. QUBIT GROUP Stand No 31 At Hydro 90, a multi-discipline team of specialists will be present Lynchborough House, Passfield, Hampshire GU30 7R~, UK to provide information and documentation on the company's activities Tel : 0428 77585 Fax : 0428 77405 on projects in Europe, the Middle East, the Far East and the Americas. Exhibits include Master Yeoman, the man/machine/chart interface of the future which provides Cl'.tremely simple chart plouing from a wide POLYTECHNIC SOUTH WEST Stand No 28 range of navigation inputs from a single navigation aid to a complex Dr.. ke Circus, Plymouth, Devon PL4 SAA, UK integrated navigation system incorporating log, gyro, sonar as well as Tel : 0752 2324-05 Fax: 0752 232293 radio and satnav aids. Typical applications include route and survey The Deparunent of Marine Science and Technology offers specialisms planning, programming ARPA and video plotters, pilotage and chart in ocean science, marine technology, hydrography, marine navigation correction. and fisheries science. Named degrees and major/minor combinatiortS CortSisting of an interface unit with a power supply, a digitising are available in these areas with the Marine Studies degree scheme. A surface and an intelligent puck, the system on display will incorporate postgraduate diploma in Hydrographic Surveying is also offered, the proven Qubit TRAC/CHART navigation and survey system, dem complying with FIG-IHO certificate of recognition as a category 'A' onstrating a complete solution to integrated navigation, command and course. control. Lecture programmes are supported by practical work incorporating extensive capital equipment, including a fleet of vessels and navigation and hydrographic simulators. The hydrographic simulator on display RACAL SURVEY - RACAL MARINE SYSTE~S Stand No 48 is one of four units used for training in survey pl arming, operations and Burlington House, 118 Burlington Road, postprocessing. Students are encouraged to use the system interactively New Malden, Surrey KT3 4~R. UK to maintain survey specifications. reduce data to desired datum and Tel: 081-942 2464 Fax: 081-942 0835 produce graphical outpuL Racal Survey and Racal Marine Systems form part of the Racal Marine and Energy Group of companies, and are world leaders in the design , POLARIS/A & B GEOPHYSICS Stand ~o 11-12 manufacture and operation of precise positioning systems and hydro 24 Linford Forum, Rockingham Drive, Linford Wood, graphic/geophysical suivcy systems. :'rlilton Keynes MK14 6LY, UK Both companies are introducing their survey servic..:s, hydro graphic Tel : 09-08 690690 Fax: 0908 690431 systems and positioning capabilities, particularly Pulse /8- II , Hyper Polaris/A & B Geophysics are major UK-based representative compa Fix, Hyperbolic Micro-Fix, and the differential GPS services, Sky Fix. nies supplying a wide range of geophysical and associated equipment HyLink and PulseLink. from many of the world's leading manufacturers. A comprehensive selt:etion of equipment will be displayed, including seismic exploration syst..: ms for land and marine use as well as acquisition systems and SI\1RAD Stand :-.;o 1 energy sources, cable depth controllers, depth transducers, heating Murcar House, Denmore Road, Bridgt of Don, sensors (compasses), acoustic positioning devices and sonobuoys. Aberdeen AB2 8JW, UK Explorship, an associated company, has wide experience in speci Tel: 0224 826101 Fax: 0224 826102 fication, procurement and installation of specialised scientific equip ment used form any types of research vessels as well as those for seismic Exhibits include the EM-12 mul ti beam operators station us ed for both exploration, oceanographic, geophysical and hydrographic survey EM-100 and EM-12 systems, containing the operator's display and a applications. quality assurance sub-system display. Using a set of data from an actual survey, all operator and QA sub-system related functions will be demonstrated on the colour screen. POSITIONING RESOURCES Stand No 35 Other exhibits include the EA-500 three-<:hannel precision echo 54 Commerce Street, Aberdeen AB2 IBF, UK sounder, the EA-300P portable single channel echo sounder together Tel : 0224 581502 Fax: 0224 574354 with a Hydro surveying system by Oat.acorn. The Hydro software is a Positioning Res0urces has one of the largest and most comprehensive general purpose 'urveying system incorporating navigation, data range of G PS receivers for hire in Europe, and will be exhibiting some editing and various post-processing options. The software makes of the latest equipment from leadi n~ mam:facturers. Top of the range intensive use of interactive graphics to reduce training times and geodetic receivers from Tnmblc will be on display along with improve processing speeds. 3 SONAR DYNE Stand No 21 positioning and navigation. The 4000 Differential Locator ~4000 DL) Station Approach, Fleet, Hampshire GUI3 8QY, UK and the low cost Navtrac will both be conducting live real-time'GflS Tel: 0152 624955 Fax: 0252 628008 differential demonstrations using the 4000 Reference Locator (4000 RL) as the base station. The 4000 DL and Navtrac locations will be New products being shown include a long-short baseline positioning tracked back for display using Trimble's V-Track software. system. LSBL. which offers high reliability in both hardware and range For highly accurate requirements, the company will also be demon data for deeper water operations of la:ge dynamically-positioned strating its Marine surveyor which achieves l-2cm accuracies while vessels. Also shown will be a new range of acoustic releases for the providing real-time differential positioning. oceanographic industry including the LCU lightweight command unit, a small competitively-priced surface unit for usc as either an in-water command unit or as a test seL TRL"ITY HOUSE MARll'\E RESOURCES Stand ]lo;o 16 Other new exhibits will be a deep (6000m) oceanographic release 67 High Street, Fareham, Hampshire P016 788, CK transponder and an oceanographic (2WOm) release transponder, both Tel: 0329 231242 Fax: 0329 231253 designed for high reliability, low maintenance and large in-line load Trinity Hwse Marine Resources will be highlighting their new SURFPAK bearing capabilities. An HPR responder/transJiOnder for use with ultra hydrographic survey software. Developed by the team responsible for short baseline systems and featuring external channel select.ability for the well-proven BAIBYPAK system, SURFPAK software runs on any reduction of offshore inventory requirements, will also be shown. IBM-compatible machine. The company is also producing a new IBM based land survey software package. Used together, the new systems SO:"iAR RESEARCH & DEVELOPMENT Stand No49 provide a totally integrated land and hydrographic survey capability. Grovehlll lndustrl.al Estate, Beverley, Visitors will also find literature covering the company's entire range North Humberside HU17 OJW, UK of activities, from consultancy to supply system. Of particular interest Tel: 0482 869559 Fu:: 0482 872184 will be illustrated brochures describing the ship IB V Trinity Explorer, an 83.6m vessel designed to suit many oceanographic, survey and ROY The first SRD acoustic tide monitor was installed on the Humber Estuary, with over 50 units now operating in various ports and harbours support roles. in the UK as well as Europe and the Pacific region. A working model of the Humber Esruary system will be on display, incorporating TSS (UK) Stand No 2 ancillary equipment specially designed for input and distribution of Weston Business Park, Weston-On-The-Green, tidal information. Oxon OX6 7TN, UK The latest version of the tide monitor originally designed for the Tel : 086 989 666 Fax : 086 989 655 Danish H ydraulie Institute will also be shown, featuring low power con TSS will be exhibiting three systems from their range of marine swnption electronics and onboard data logging capability. Supporting equipment, one of which is the TSS 3208 lightweight heave compen the tide monitors are a range of telemetry units, including UHF sation system now acknowledged as a market leader. Designed to transmiuers and single/multi-channel receivers, and the SRO doppler remove vessel motion errors from precise sounding and profiles and current profiler with a range of instruments covering depths down to already in worldwide usc, it is compatible with any standard echo 250m. sounder. Two new sensors will be shown, both specifically designed for op SWATH OCEAN INTERNATIO~AL Stand l'\o 15 erators of small survey launches. The TSS 323 and 325 are solid state 4061 Powder MIJI Road, Suite 310, Calverton, heave, roll and pitch sensors. Compact and robust, they work in Maryland 20705, USA conjunction with the 3208 system. Also being demonscrated will be Tel : 301-595 9850 Fax : 301-595 9854 recently introduced "intelligent" motion sensors, a series of stand Swath Ocean.designer and builder of swath (small waterplane area twin alone pods providing heave, roll and pitch information in real time for hull) vessels, features its 2000 class survey vessel and incroduces a new any application. coa.;tal survey launch, "Frederick G Creed". The subject of a highly complimenlary Canadian paper at Hydro USA 90, this is a 20m vessel VALEPORT MARIJ'\E SCIE:'llTIFIC Stand ~o 19 and first of the 2000 class. Unit 7, Townstal Industrial Estate, Dartmouth, The new Swath Ocean entrant is the 14m coastal survey launch. Devon TQ6 9LX, t.;K Other designs, up to 70m, arc availa!Jle for hydrographic and geophysi Tel: 0803 834031 Fax: 0803 834320 caj ; u:veys :is well as ocean research. Swath Ocean has answers for all V aleport Marine Scientific will be exhibiting their range of Series 800 weather problems, with references from the Canadian Hydrographic two axis EM flow meters. They will be shown together with the Service and US Army Corps of Engineers. BIB700 tide gauge system as well as the Series 600 CIDS and BFM 108 current me ters. TOPCON EUROPE BV Stand ~o 29 PO Box 145, 2900 AC Capelle AID Ijssel, The Netherlands WS OCEA:'I." SYSTEMS Stand :\o34 Tel: 010 31-458 5077 Fax: 010 31-458 5045 Unit 4, Omni Business Centre, Omega Park, With experience of producing high pcrfonnance survey instruments for Alton, Hampshire GU34 2QD, UK alrnosl 60 years, the company will be showing its newest hydrographic Tel: 0420 541555 Fax: 0420 541499 product, the AP-S l. This is an auto-positioning total station that can be Exhibits will concentrate on a number of new products as well as some matched to all types of survey application, both onshore and offshore. proven sLandards. Among new products will be the AWH-16M wave Based on a maximum speed of I 0" /scc, the AP-SI can track moving height recorder, the Aquamate multi-parameter inshore water quality prisms automatically to a distance of 2800m. monitor, the SLM- I inshore tide gauge, the SMM 2000 Argos mooring recovery beacon for transmission of data via the Argos satellite link, TR™BLE NAVIGATION EUROPE Stand No 9 and an example of a new range of oceanographic winches now being 12 Tonbridge Chambers, Pembury Road, manufactured by WS Ocean Systems. Tonbridge, Kent TN9 2HZ, UK Highlighted products include the SVP-16 speed of sound velocime Tri : 0732 366201 Fax : 0732 351986 ter for deep water, direct or down-loaded measurements, and Aanderaa The leader in GPS, Trimble Navigation Europe will be demonstrating Instrwnents' WLR-7 offshore tide gauge for precision measurements its range of real-time differential products which provide accurate from 1m to 600m. Il 1 LJ .l\. V ;I U .L:JAJ. J..i..l> J. .I. V ftiJ - ' University of Southampton 18-20 December 1990 ADDENDUM ANDREWS HYDROGRAPH1CS Lm Stand No 39 receive over the complete frequency range; plus our sensor, Hydrographic Surveyors - Offshore Positioning processing and data management capability to address Unit IS, Grove Park, Waltham Road, White Waltham, oceanographic measurement requirements. Additionally, MUSL are Maidenhead. Berks SL6 3LW, UK demonstrating advanced models of sound propagation in the ocean. Tel : (0628) 828331 Fax : (0628) 828251 These show fluctuations in sound speed profile in space and time which give accurate representations . of sound intensity. The Andrews H ydrographics Ltd are hydrographic survey contractors demonstration shows an enhanced model running on a network who provide offshore survey services to Civil Engineers, Port & Harbour Authorities, Water & River Authorities and the of thirty T800 transputers which will compute an animated display faster than real-time. Hydrocarbon Exploration Industry. During Hydro 90 AHL will emphasise their expansion and commitment to Oceanographic surveys and their application of GPS to a variety of survey tasks. OCEANO INSfRUMENTS (UK) Ltd Stand No 44 During 1990 Andrews Hydrographics Ltd conducted several 9 New Broompart, Grantoo Park Avenue Industrial Estate, Major Marine Environmental surveys involving the acquisition and Edinburgh EH5 IRS, UK analysis of hydrographic, physical and chemical oceanographic data Tel: 031 552 0303 Fax: 031 552 6619 in the South West Peninsula. Land & Satellite Surveys Ltd is a Oceana Instruments (UK) Ltd are suppliers of underwater acoustic subsidiary located in Newbury established to harness and supply positioning and telecommand systems and o ceanographic the benefits of the Global Positioning System to industry. A large instrumentation. Consid e rab~e equipment develo pment is in survey was undertaken earlier this year to measure offshore platform progress, and exhibits at Hydro '90 include a new Acoustic Release stability using a total of 11 separate geodetic receivers. Other aspects model AR661, Offshore Tidegauge with integral Acoustic Release of the L&SS Ltd service include training and software support model OT31 lAC, Met Data acquisition system SLS-28, Rosette to existing GPS owners in addition to traditional land survey water sampler, and self-recording Sound Velocimeter SV510, which techniqu~ and sateUite survey contracts. is currently in use in the Middle East. The latter has recently been qualified by the French Navy and is in use by the Royal Navy. CSIP LIMITED Stand No 16 Following an acquisition earlier this year, Oceana Instruments 69 St Tbo1JJ2S Street, Weymouth, Dorset DT4 8EL, UK is part of the Mors Group, a French high technology PLC with Tel : (0305) 77 90 20 Fax : (0305) 77 80 95 some 1,800 employees. Sister companies include Mors CSI P Ltd will exhibit a wide range of hydrographic and Environnement, Massy and Brest, France, and Oceano Instruments oceanographic equipment. Products will include the new USA Inc, Seattle. multipurpose ECA's towed vehicle TOSCA, NEREIDES. WADIBUOY and IFP fuse the oil pollution detector. ME SATSURV LIMITED Stand No 13 Meerestechnik Electronik equipment now available in the UK 2 Ridgacre Lane, Quinton, Birmingham B32 IFS, UK through CSIP Ltd wiU also be exhibited. Tel: 021-423 1437 Fax: 021-423 1480 ME oceanographic probes and currentmeters will be shown and Satsurv Limited will be exhibiting the Ashtech M-XII 12 Channel the new automatic water analyser, APP,, for detection of nutrients · GPS Receiver. This is currently the most compact Geodetic GPS such as phosphates or ammonia will be highlighted. receiver capable of applications ranging from millimetric static survey to general navigation, including kinematic and differential HA'.\' KER SID DELEY DYNAMICS ENGINEERING LTD operation. The M-XII can be upgraded to a 24 channel dual S.G. Brown Division Stand No 53 frequen.cy unit. Ashtech now has full 12 and 24 channel "P" code Bridge Road East, Welwyn Garden City, Herts AL7 lJS, UK upgrades available. Please visit o ur stand to discuss your Tel : (07071 331299 Fax : (0707) 334429 requirements. The Ashtech GPPS-2 software including the Mission S.G . Brown v.i ll be exhibiting the extremely successful SGB lOOOS Planner will also be demonstrated. Survey Gyro Compass. Principally designed for surveying and rig shifting applicati ons within the offsho re industry, the new SGBlOOOS high accuracy gyro compass is a self contained . portable unit operating from 24V DC v.'ith a maxi mum load of only 6 a mps. It is supplied with a rugged, custom built transit case and is capable of withstanding frequent transportation between operational areas. The compass is easy to use and can be readily integrated " ith existin"' navigational systems. Providing stepper, synchro and d ignal data outputs , it also has the ability to receive and apply sp.:ed and lalltutde compensation. Among the new features on the SG B 1OOOS is a built in digital display, and a remote heading display can also be incorporated. MARCONI UNDERWATER SYSTEMS LTD Stand Nos 24 & 25 EJettra Avenue, Waterlooville, Hampshire P07 7XS, UK Tel: (0705) 264466 Fax: (0705) 20@2-46 Marconi Underwater Systems and its subsidiary company UDI, are exhibiting:- Star-Track. the lea di;i~ s;i tell ir e positioning and communications system for ships; the= b ... tr,:- ' ..: J n swath sounding system for such tasks as hydrographic > ~ ·. : ·;: ng. pipeline route surveys, dredging and salvage operatii , rh,, ur surveys; a range of antennas for communic • · ;.iurposes,