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MINE WARFARE AND DIVING
VOLUME 9 AUGUST 1998
FOST MPV
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EDITORIAL STAFF MINEWARFARE Sponsor: Cdre. J Hance. Managing Editor: Lt, Cdr. G. J. Landrock Editorial Offices: Minewarfare Section. AND HMS Dryad, Southwick, DIVING Hampshire, Telephone: 01705 224782 THE MAGAZINE OF THE Publisher: Robert Smith, MINEWARFARE AND DIVING Design: Sean Shelley, COMMUNITY The Graphics Media Centre, HMS Dryad. Tel 01705 284239 VOLUME 9 AUGUST 1998 EDITORIAL
CONTENTS Welcome to the August 1998 Volume 9 of the MAD Magazine. Foreword by Cdr John Murphie 1 Superintendent of Diving's Round Up 2 Much has changed in the world of Minewarfare and The Manpower Equation 3 Diving since the last edition hit your desk. We again have a 80m diving capability. a proven tropical Diving Equipment Update 4 capability in the SANDOWN Class. a new CDRE MFP, Diving in the Royal Navy Reserve 7 S of D. MCM. 2 and 3 and of course SDR, but more of CDBA Conversion 8 that in the Foreword. CPP Blade Change Using Inflatable Habitat 9 One thing that has not changed is your enthusiasm HABITAT Speak 14 for avoiding submitting articles for this edifying tome, 15 Bravery Award - AB(D) Murray at least until the very last minute! This edition has been Surf Zone / Very Shallow Water Divin 16 produced almost entirely in house by SMOPS Exercise Strong Resolve 98. The MCMTA Graphics Section. It will continue to be published only annually but the content and distribution have Perspective 21 increased. Despite this, it has regretably still been 27 Exercise Analysis necessary to edit out some of the pictures and visual Message from SOMFP 30 aids provided in order to remain within budget. MW and the JMC 32 Thanks are due to Cdre J Hance ADC for the use of The Move Under FOST 33 his Graphics Section, to Cdr John Murphie for writing 34 FOST - MCM Training the Foreward which includes his hot off the press first STANAVFORCHAN - A Coxswains' View 36 impressions of the SDR and to all of you who did take The Swedish Experience 38 the trouble to pick up a quill and inform the rest of us what is happening in your area of the branch. Farewell to the 2641 40 41 IIP Explained I now hand over to Lt Cdr Graham Collins as Managing Baby Talk 42 Editor and hope that for the next edition the same Adventurous Training 44 quality of articles will be forthcoming. For the last two years we have heard much from the various Drive Navy 46 Headquarters so perhaps next year we could hear 48 Canadian Exchange more from the coal face. after all it is there that the Postcard from Abbey Wood 51 real business is done. So pick up your pen and start TAG Endurance Trial 55 scriod.inc. dosing date for next year's edition will be APRIL 3Citi 1999. MWC 57 Clearance Diving Tactical Development 58 Incoming from La Spezia 59 That Blessed B I 6" CONISTON Chronicle 52 Letters to the Editor 77-1 Feedback Leaving the RN Caption Competition ...... -73E.-:• Z.:
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FOREWORD
Foreword by
COMMANDER JDD MURPHIE ROYAL NAVY MINEWARFARE DIVING AND EOD DESK OFFICER. DIRECTORATE OF NAVAL OPERATIONS
I have been in post in the Ministry of Defence for 2 years ostensibly acting as the central staff advisor on Minewarfare Diving and EOD. In reality I am to persuade all with whom I come into contact that our three separate and complimentary skills provide vital enabling functions and are worth a continuing place in the UK force structure.
The Strategic Defence Review has had a hard look at how UK MCM (by MCM I include minewarfare, diving and EOD) is conducted and has endorsed our role. In addition further encouragement can be found in the emphasis on flexible, joint rapidly deployable forces, this is a direction in which MCM is already moving. Past crises have seen unsophisticated mines disrupt sophisticated operations and the momentum generated within the operation has been lost unless (or until) MCM is included in and combined, from which lessons are drawn the force package. We have therefore had to be and applied. This in turn will improve tactics and flexible, joint and rapidly deployable however, bolster procurement bids. there is more potential for us to realise in this area.
To effectively contribute to a deployable force I In short. SDR is good news. it points a way ahead see the emphasis continuing towards MCM and there is a distinct, challenging and systems which, once on task, can cover the necessary role for UK MCM. ground much more quickly than currently. Complementing that, the continued efforts into On a different tack, it has been interesting to note MCM in shallow water will be a very necessary letters in a recent edition questioning the future capability to have. particularly with new LPDs direction for our branches. This magazine should entering service. There will be many debates on become a place where questions can be asked what sort of shape future MCM systems will take: and answers prompted, policy should not be a will they be housed in their own vessels or be secret, the only stupid question is one that goes bolted on to other ships as necessary? Whatever unasked. the outcome the experts will be required to procure, operate, interpret and advise on MCM.
The personnel measures announced will help considerably in retaining and recruiting; filling the gaps that so quickly snowball in ships and teams reducing morale and OC.
Finally a warning. Resting on past successes will not help prove the case for future equipment even with an SDR endorsed role. There is still a need for high quality exercises, preferably joint
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SUPERINTENDENT OF DIVING'S ROUND UP
By Commander D Hilton MNI Royal Navy - Although there are a lot of very exciting developments, Superintendent of . Diving they do require manpower. If I was to state my one overriding problem area, affecting readiness and My aim for this issue of the MAD magazine, is to capability, it would be manpower, particularly at the update you on how the management of the Clearance Able Diver Rate. I have therefore included a Manpower Diving branch has changed and mention some of the article in this issue. more important issues. I am convinced that with the introduction of Investors I thought a Fleet Diving Squadron (FDS) HQ article in People (IIP) used primarily as a business was appropriate, with a brief overview of the recently management tool it will improve our business formed Fleet Diving Squadron including issues, such performance further by developing a more highly as Manpower, EOD/IEDD, UWE and diving equipment. skilled and flexible workforce. The aim of IIP is that Firstly, having been away from the diving branch for 3 what people can do - and are motivated to do - years, I was most impressed by all the good work matches what the organisation needs them to do. The and changes my predecessor, Cdr John Arrow FDS is formally committed to the IIP process, with achieved over his time as Superintendent of Diving accreditation planned by Dec 98.(A full explanation (SofD). of IIP is contained in Cdr Wellborn's article on page.43)
I am equally excited by the potential for work that In summary, it is encouraging to see so much progress needs to be done in terms of equipment. concepts being made across the whole spectrum of military and in managing a new developing organisation so diving. There is a new military poignancy to our role that Diving, Underwater Engineering (UWE) and EOD, and as budgets become tighter the importance of fulfills its proper role and integrates with other areas naval diving, in particular with Underwater of warfare. Engineering, is becoming more widely recognised. The long awaited new equipment is coming into FDS - Introduction service and a more efficient management structure has been developed. The management changes will You should all be aware that the Fleet Diving Squadron help us focus and maintain our capabilities with a (FDS) was formed in Mar 98. At the beginning of 1996, leaner budget whilst retaining the flexibility to meet most Royal Navy diving and EOD forces came under wide ranging tasks. Flag Officer Surface Flotilla type command. Those which did not, the Diving Elements in Hong Kong and It should be noted that in the current financial climate Gibraltar, came under his functional authority for where budgets are scrutinised and tasks justified at procedures and standards, exercised in turn through all levels, the need to look constructively at saving Commodore MFP and SofD. At the same time, and measures, however small, is a constant necessity. as a result of the demise of the Area Flag Officers, the former Port Clearance Diving Units were amalgamated Every branch in the RN has its problems; some are into 2 Area Diving Groups, which with the Fleet Diving worse than others. I saw this in my last job and whilst Group, came under SofD as a Squadron Commander. we have several challenges ahead our future With the increasing demands for diving and EOD skills prospects are very encouraging for all involved in to support the Fleet, amphibiosity, Special Forces, Military Diving. My HQ Staff will continue to welcome MCM and forward engineering, this change was timely your invaluable inputs and give guidance on all related and entirely appropriate. subjects.
There are 3 Diving Groups under Cdre MFP, made up I look forward to diving with you in the not too distant of a total of 7 Units each led by a LtCdr or Lt MCD. future. Each Unit is specialised to some extent, but is largely Safe diving. able to provide mutual support to other Units, to maintain a broad level of experience, and to compensate for manning shortages and short term over-tasking. One of the key benefits of bringing the 3 Groups under single FOSF type command at the beginning of 1996, was this ability to command and coordinate the 7 Units easily to a single purpose when required. This change has enabled us to improve our effectiveness and flexibility as part of the Surface Flotilla.
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up to Dec 99: 99: Dec to up Continued... Continued...
deduce that something like the following will happen happen will following the like something that deduce
If you follow the logic from the tables above we can can we above tables the from logic the follow you If
than the best: best: the than
Let's wait at least a year before revising estimates. estimates. revising before year a least at wait Let's
years several things have conspired to make us less less us make to conspired have things several years
on the figures of only one or two courses. courses. two or one only of figures the on
So we are not the worst for advancement but over the the over but advancement for worst the not are we So
see how it works out, but a word of caution; do not rely rely not do caution; of word a but out, works it how see
new entry training factors. We shall all have to wait and and wait to have all shall We factors. training entry new
From 105 ABs we need only 10 WOs. WOs. 10 only need we ABs 105 From
rate is an estimate based on both previous years and and years previous both on based estimate an is rate
rank or rate), Look again at the table at the beginning. beginning. the at table the at again Look rate), or rank
sideways entry and the new direct entry diver. The pass pass The diver. entry direct new the and entry sideways
are going to make it to the top regardless of branch (or (or branch of regardless top the to it make to going are
On the courses above there will be both the usual usual the both be will there above courses the On
is also 8.5 yrs, Also remember that only a small number number small a only that remember Also yrs, 8.5 also is
LSteward(SM)is 8.5 yrs, LH(AH) is 6.5 yrs, LWEM(R)(SM) LWEM(R)(SM) yrs, 6.5 is LH(AH) yrs, 8.5 LSteward(SM)is
Total for all courses = 39 39 = courses all for Total
Average waiting time for a B13 for LS(D) is 6.5 years; years; 6.5 is LS(D) for B13 a for time waiting Average
Notes:Course 120 not yet planned in detail. detail. in planned yet not 120 Notes:Course
PO(Steward)(SM) is also 7 Yrs, PO(AH) is 9 years! years! 9 is PO(AH) Yrs, 7 also is PO(Steward)(SM)
time for a B13 for PO(D) is 6 years; PO(SE) is 7 years, years, 7 is PO(SE) years; 6 is PO(D) for B13 a for time
Cse 120 (ends 10/99) 12 Students 9 Passes expected expected Passes 9 Students 12 10/99) (ends 120 Cse
rate, but it is by no means the worst - average waiting waiting average - worst the means no by is it but rate,
Cse 119 (ends 11/6/99) 12 Students 8 Passes expected expected Passes 8 Students 12 11/6/99) (ends 119 Cse
The diving branch does not have a good advancement advancement good a have not does branch diving The
Cse 118 (ends 5/3/99) 12 Students 9 Passes expected expected Passes 9 Students 12 5/3/99) (ends 118 Cse
Cse 117 (ends 13/11/98) 12 Students 8 Passes expected expected Passes 8 Students 12 13/11/98) (ends 117 Cse
extended in service. service. in extended
Cse 116 (ends 3/7/98) 6 Students 5 Passes expected expected Passes 5 Students 6 3/7/98) (ends 116 Cse
effect how our branch is manned, advanced and and advanced manned, is branch our how effect
and one or two other, whole Navy, long term factors, all all factors, term long Navy, whole other, two or one and
expected: expected:
Branch the PO(D) - the man we need for the sea billets) billets) sea the for need we man the - PO(D) the Branch
Able Seaman (Divers) [17 weeks] currently running or or running currently weeks] [17 (Divers) Seaman Able
expected to leave), 'driving Rate' (varies but in our our in but (varies Rate' 'driving leave), to expected
People are also joining. These are the DDS courses for for courses DDS the are These joining. also are People
rates to build 'the pyramid'), wastage rate, (the number number (the rate, wastage pyramid'), 'the build to rates
size, Rate ratio (the number of people at different ranks/ ranks/ different at people of number (the ratio Rate size,
AB AB -12 -12
This is a more complicated problem because Branch Branch because problem complicated more a is This LH LH -6 -6
PO PO -12 -12
CPO CPO ADVANCEMENT ADVANCEMENT -5 -5
their terminal (TX) date: date: (TX) terminal their meantime please bear with us. us. with bear please meantime
are the numbers leaving up until Dec 1999, based on on based 1999, Dec until up leaving numbers the are take probably two years to reach equilibrium. In the the In equilibrium. reach to years two probably take
a dynamic organisation. For the Diving Branch these these Branch Diving the For organisation. dynamic a In short, the numbers should slowly get better but it will will it but better get slowly should numbers the short, In
People are always joining and leaving the Navy; we are are we Navy; the leaving and joining always are People
remember! remember!
Totals Totals 275 275 262 262
lot to do they wouldn't be there - we're short of ABs, ABs, of short we're - there be wouldn't they do to lot
AB AB 119 119 105 105
if the DDS had people available for 17 weeks with not a a not with weeks 17 for available people had DDS the if
LH LH 73 73 72 72
17 week course does not appear by magic wand - and and - wand magic by appear not does course week 17
PO PO 47 47 49 49
be found and facilities and resources budgeted for. A A for. budgeted resources and facilities and found be
CPO CPO 26 26 26 26
saying 'run another course.' The teaching staff have to to have staff teaching The course.' another 'run saying
WO WO 10 10 10 10
late 1999 or early 2000 but it is not as simple as just just as simple as not is it but 2000 early or 1999 late Actually Borne Borne Actually Bearing Bearing
hoping that an additional course can be run probably probably run be can course additional an that hoping
Branch Manpower numbers look like this: this: like look numbers Manpower Branch The shortage is not good but is containable. We are are We containable. is but good not is shortage The
Let me begin with numbers. As of the 1 April, the Diving Diving the April, 1 the of As numbers. with begin me Let
A shortfall of 10 ABs will still remain. remain. still will ABs 10 of shortfall A
MANNING MANNING
the course there will be a net gain of only 4 ABs. ABs. 4 only of gain net a be will there course the
problems; manning and advancement. advancement. and manning problems; If 23 ABs are promoted, 12 leave and 39 pass pass 39 and leave 12 promoted, are ABs 23 If * *
made by the MOD seem peculiar. We have two two have We peculiar. seem MOD the by made
article why it LOOKS so bad and why some decisions decisions some why and bad so LOOKS it why article can be rated LH. LH. rated be can
complicated subject. I am going to try to explain in this this in explain to try to going am I subject. complicated * * If 17 LHs are promoted and 6 leave, 23 ABs ABs 23 leave, 6 and promoted are LHs 17 If
This is an emotive and, as I have discovered, a a discovered, have I as and, emotive an is This
can be promoted PO. PO. promoted be can
THE MANPOWER EQUATION EQUATION MANPOWER THE * * If 5 POs are promoted and 12 leave, 17 LHs LHs 17 leave, 12 and promoted are POs 5 If
Deputy Superintendent of of Superintendent Deputy 2: 2: promotion to CPO during 1998. 1998. during CPO to promotion
By Lt Cdr Mike Allen Allen Mike Cdr Lt By * * If 5 CPOs leave 5 POs can be selected for for selected be can POs 5 leave CPOs 5 If
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THE MANPOWER EQUATION
Sideways Entry. For the last 15 years everyone who Educationally for Warrant Officer (QEWO). This increases joined was about 24 or 25, some even older. Starting a the pool of candidates for promotion and thus improves career at that age always puts people behind their the chances of those further down the ladder moving up. contemporaries. In summary, we are short of ABs but the situation will Direct Entry. Up until 15 years ago we used to take Direct improve, albeit slowly. Not everyone will achieve Entries. Those DE are now in the WO/CPO and PO billets. advancement to the rate they would like but there IS They are young (ish), and still have some years to serve. movement and although competition is stiff, those who work hard and stick with it will be rewarded. Drawdown. The writing was on the Berlin Wall as they were pulling it down. The Armed forces had to be cut. The Final Point. Some of you have complained to me that you Diving Branch shrank. Many SR jobs were cut and people have insufficient time left to achieve PO and then serve the made redundant, recruiting was significantly reduced and full two years for a POs pension. Firstly, with fifth fives being the pool of sideways entry candidates began to dry up. introduced for POs some will achieve it. Secondly, after 12 The SRs remaining were young (mostly Direct Entries!) months you get the pension of the rate you are in on with plenty of time still to serve. The JRs on the other hand termination at a pro rata basis, i.e. PO for 18 months will were not offered redundancy. They were expected to get 18/24ths of the full POs pension plus 6/24ths of a LH reduce by the process of 'natural wastage'. (About the pension. same number of people leave whatever job every year, regardless of how well paid, easy or challenging it is. Politics, I hope this helps explain a little of the mysteries of branch showbusiness, sport. Everywhere, it happens.) But in some size and advancement. Over the next 2 years advancement branches they did not leave in quite the expected numbers. and manning will improve. The Diving Branch was one of them, because
Contentment. It sounds naff but being a diver is one of the DIVING EQUIPMENT UPDATE best jobs in the Navy. Its demanding, challenging and interesting. We go to places few others see and work. The From the piling Inspectorate: Regulating Branch does not work with the Police as often as we do, for instance. We work in small, close knit Units Here are the latest developments in the seemingly fuzzy (almost 'families') where lives can depend on the actions world of equipment procurement!. Believe it or not there of each of us. When things go wrong we all apply ourselves are a large number of dedicated people beavering away in 100%, regardless of rank, race, colour, creed, religion or the backround, finding the money and then the right anything else. If a `buddy' is in trouble; we go for it. Difficult equipment to meet the military requirement. to achieve in 'civvy street'. Outcome; most of you want to Because we are spending Public Monies, it sometimes stay. Touching, but true! takes years to develop and sustain the justification for new or even replacement of old equipment. The last two years So if advancement is slow why do we still offer 20E and has seen the culmination of this effort. 'fifth fives'. The answer to this is long term planning. The plots run by the MOD look up to 10 years ahead. That is, in 6, 8, 10 year's time we need a structure that has both experience and youth. So there will always be a proportion of CPOs on 20E and, in the future, POs on fifth fives. There will also be about the same number leaving time expired, some having completed 20E, some a fifth five and the rest their normal engagement. It does not significantly affect the number of people leaving year on year. The promotion ratio remains the same. In fact, it is better than that because the people selected are GENERALLY Warrant Officer candidates and may be promoted out of the CPOs roster early. Now, having spoken to members of The Boards' I must emphasise there are no 'rules' to selections for promotion, 20E or fifth five. BUT, with so many good candidates the Board usually comes down to four or five with only one or two selections to make. Weighting may then be applied to those who have completed POLO and are confirmed. Account may also be taken of those Qualified 4 www.mcdoa.org.uk
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recreational diving equipment market in order that we can can we that order in market equipment diving recreational contravenes H&SE guidelines and it's replacement, replacement, it's and guidelines H&SE contravenes
is an ongoing commitment to monitor the commercial and and commercial the monitor to commitment ongoing an is investigated. In demolition's the lead sheath in CLC CLC in sheath lead the demolition's In investigated.
budget bidding, negotiation and equipment scrutiny. There There scrutiny. equipment and negotiation bidding, budget of the developing threat and potential replacements replacements potential and threat developing the of
fact, they are the culmination of many years of planning, planning, of years many of culmination the are they fact, performance of of performance LMDE LMDE is also being examined in light light in examined being also is
incidental, falling as they have within the last 18 months. In In months. 18 last the within have they as falling incidental, with remote initiation and controllable lift. The The lift. controllable and initiation remote with
These achievements are considerable and perhaps co- perhaps and considerable are achievements These resulting bag will give units a 500/1000Kg lift capability capability lift 500/1000Kg a units give will bag resulting
Mine Lifting Bag Bag Lifting Mine is currently going out to tender. The The tender. to out going currently is
of the projects under curent consideration. consideration. curent under projects the of surface/beach and to this end an improved improved an end this to and surface/beach Enclosed Enclosed
lighting, underwater navigation and sub tugs are just a few few a just are tugs sub and navigation underwater lighting, require us to get the ordnance from the seabed to the the to seabed the from ordnance the get to us require
replacement dry suits, direct feed suit-inflation, under-water under-water suit-inflation, feed direct suits, dry replacement to the operator in the near future. Much of the above above the of Much future. near the in operator the to
Ancillary Items Items Ancillary Personal dive light, lost diver markers, markers, diver lost light, dive Personal software with the aim of having a useable tool available available tool useable a having of aim the with software
and major improvements are being made to the the to made being are improvements major and
communication with the diving supervisor. supervisor. diving the with communication progressing after a somewhat unfortunate few years years few unfortunate somewhat a after progressing
currently on trial, the primary aim to give all air divers, verbal verbal divers, air all give to aim primary the trial, on currently The computerised EOD database, database, EOD computerised The ASH, ASH, is now now is
Future Equipments Equipments Future Through Water Communications is is Communications Water Through a possibility of real time X-Ray further down the line. line. the down further X-Ray time real of possibility a
and developing systems within the next 5 years with with years 5 next the within systems developing and
Fleet. Fleet. should see replacements for both the X-Ray sources sources X-Ray the both for replacements see should
significantly to the Service diver capability in support of the the of support in capability diver Service the to significantly progressed for both. A rolling replacement programme programme replacement rolling A both. for progressed
works extremely well, SDG can confirm, and adds adds and confirm, can SDG well, extremely works of their useful life and replacements are being being are replacements and life useful their of
a CPP propeller and allow a blade change in the dry. It It dry. the in change blade a allow and propeller CPP a Inspector Inspector and and Whale/Andrex Whale/Andrex are coming to the end end the to coming are
Underwater Habitat Habitat Underwater The habitat is designed to fit around around fit to designed is habitat The acceptable. The in service X-Ray equipments, equipments, X-Ray service in The acceptable.
on large ordnance where removal or high order is not not is order high or removal where ordnance large on
air panel and underwater lighting, is iminent. iminent. is lighting, underwater and panel air and promises to be a valuable EOD tool, especially especially tool, EOD valuable a be to promises and
review and procurement of sub-systems, such as the HP HP the as such sub-systems, of procurement and review predecessor, trepanner, it is capable of much more more much of capable is it trepanner, predecessor,
range of equipment under the SSDE umbrella is under under is umbrella SSDE the under equipment of range primarily as a case entry tool but unlike its its unlike but tool entry case a as primarily
Heliox 18 Bandmask and Superlite 17 helmets. The whole whole The helmets. 17 Superlite and Bandmask 18 Heliox (ACE) (ACE) is a hydro abrasive cutting system designed designed system cutting abrasive hydro a is
served us well for many years, has been replaced with with replaced been has years, many for well us served be trialled in Jun 98. 98. Jun in trialled be Abrasive Cutting Equipment Equipment Cutting Abrasive
Surface Supplied Diving Equipment SSDE. KMB 10, which which 10, KMB SSDE. Equipment Diving Supplied Surface general EOD and the other specific to MIE, are due to to due are MIE, to specific other the and EOD general
SDDE has been rationalised and will become become will and rationalised been has SDDE SDDE SDDE to modern ordnance and two new toolsets, one for for one toolsets, new two and ordnance modern to
range of of range EOD tools tools EOD is now outdated and not suited suited not and outdated now is
extremely encouraging. encouraging. extremely remoted to the command post/vehicle. Our current current Our post/vehicle. command the to remoted
courses are underway and feedback from the Fleet is is Fleet the from feedback and underway are courses temperature gradient sensor and a chemical sensor sensor chemical a and sensor gradient temperature
and renamed to better describe it's military use. Conversion Conversion use. military it's describe better to renamed and suite of sensors including cameras, stethoscope, stethoscope, cameras, including sensors of suite
This is the old DSSCCA, fitted with a Stab Jacket Jacket Stab a with fitted DSSCCA, old the is This SABA SABA due to arrive in 99 which will provide an integrated integrated an provide will which 99 in arrive to due
couple of years. In the short term the the term short the In years. of couple UXO monitor monitor UXO is is
support 80 metre diving. diving. metre 80 support developed and will start to filter through over the next next the over through filter to start will and developed
autonomous and extremely capable diving platform and and platform diving capable extremely and autonomous introduced there are several new areas that are being being are that areas new several are there introduced
system. These CCs will will turn each minehunter into an an into minehunter each turn will will CCs These system. Although no new equipment has recently been been recently has equipment new no Although
with a built-in computer controlled, closed circuit, breathing breathing circuit, closed controlled, computer built-in a with
to the first SRMH is imminent. A two compartment chamber chamber compartment two A imminent. is SRMH first the to DERA(Bincleaves) to develop exploitation techniques. techniques. exploitation develop to DERA(Bincleaves)
Type C CC CC C Type This chamber is nearing completion and delivery delivery and completion nearing is chamber This Exploitation (MIE) and are working closely with with closely working are and (MIE) Exploitation
FDU3 have taken on Mine Investigation and and Investigation Mine on taken have FDU3
CDBA is at the cutting edge of diving technology. technology. diving of edge cutting the at is CDBA With the re-organisation of the Fleet Diving Group Group Diving Fleet the of re-organisation the With
set with which the users are extremely pleased and like the the like and pleased extremely are users the which with set yards to 500LB aircraft bombs and large sea mines. mines. sea large and bombs aircraft 500LB to yards
achieved acceptance after rigorous trials. A capable diving diving capable A trials. rigorous after acceptance achieved 97/98 ranging from pitch filled shells in aggregate aggregate in shells filled pitch from ranging 97/98
extended duration shallow water swiming set and has has and set swiming water shallow duration extended conducted a total of 888 reactive CMD tasks during during tasks CMD reactive 888 of total a conducted
LEBA(MG) LEBA(MG) This has been procurred as a 24 metre metre 24 a as procurred been has This rise. Across the board the Area Diving Groups Groups Diving Area the board the Across rise.
of tasks (93%) IEDD tasking has also seen a small small a seen also has tasking IEDD (93%) tasks of
include comms and a diver-surface-diver visual data link. link. data visual diver-surface-diver a and comms include Disposal (CMD) continues to account for the majority majority the for account to continues (CMD) Disposal
and is in the 1998/99 procurement programme which which programme procurement 1998/99 the in is and the Area Diving Groups. Whilst Conventional Munitions Munitions Conventional Whilst Groups. Diving Area the
Ancilliary equipment to enhance CDBA has been approved approved been has CDBA enhance to equipment Ancilliary the last year seeing a continuing rise in tasking for for tasking in rise continuing a seeing year last the
conversion courses will continue for the next 2 years. years. 2 next the for continue will courses conversion As ever the naval EOD Operator is a busy man with with man busy a is Operator EOD naval the ever As
diving system. Fleet training has commenced and CDBA CDBA and commenced has training Fleet system. diving
except to say that it is now in-service as a proven 80 metre metre 80 proven a as in-service now is it that say to except EOD UPDATE UPDATE EOD
the MAD Magazine and I will not "stop" too "deeply" on it, it, on "deeply" too "stop" not will I and Magazine MAD the
CDBA CDBA This set featured strongly in a previous issue of of issue previous a in strongly featured set This bid for the best to support the Military Purpose. Purpose. Military the support to best the for bid
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DIVING EQUIPMENT UPDATE
BLADE, a similar shaped charge encased in foam EX RESURGENT has now been successfully trialled underwater although an acceptable means of detonation requires In early 97 IEDD pre-licensing training started developing before it can be utilised by a single diver out with the RAF at Ashfordby Gun Range in in the MCM role. CMD boxes 1 & 2 have also been Leicestershire (an old WWII naval gunnery modified to allow closer compliance with ferry range). Unfortunately just as we got into the company regulations whilst giving the operator extra swing of things the H&SE intervened and banned options in his approach to the task. The type of vehicle all training at the site. Left up the proverbial creek that CMD is conducted from is also under review with without a paddle we cast our eyes around for a the current combination of Ford Transit and Landrover suitable venue, not an easy task when you proving unsatisfactory in several aspects. In the slightly consider that we want to fire explosive weapons longer term remote vehicles and other remote in a built up area. After several options proved techniques, already extensively used in IEDD, are unsuitable a site offering restricted access and being developed for the CMD task with the aim of consisting of several multi story buildings and a moving the operater further from the danger area. The number of roads and outbuildings, allowing a aim is that many of the equipments listed above will comprehensive series of scenarios to be run, was be deployable on an RCV platform. Several prototypes identified in Portsmouth. More significantly, with have been deployed in Bosnia and whilst currently the exception of the adjacent nudist beach, there none is ideal they provide a useful base on which to is little public access allowing the safe firing of build. weapons . Exercise Resurgent was born.
Turning to IEDD, despite the current cease-fire and Exercise Resurgent runs from Tue to Thu in the ongoing peace process in Northern Ireland the IEDD week before each relicensing period and is threat on the mainland remains all too real. Currently intended to focus the IEDD operators skills and the RN fields 4 teams which are declared to the Joint ensure they are up to date with current Services EOD Operations Center at Didcot for techniques and threats. It is co-ordinated by Insp deployment in support of UK mainland Civil Powers EOD and supported by the Area Diving Groups and conducted 46 tasks over the previous year. with Directing Staff assistance from the Royal Additionally FDU1 provides a light weight team Logistics Corps (RLC) and Hampshire Police. specifically aimed at countering an IEDD threat in the Realistic devices are 'manufactured' over the MCT environment. Furthermore, recent changes to proceeding months and are based on real IEDD training and the establishment of Exercise devices that have been deployed on the Resurgent has seen numbers of licensed operators mainland. A wide range of scenarios ranging rise from a low of 3 to our current standing of 15. from PIRA radio controlled devices to schoolboy Notwithstanding a significant PIRA campaign prior to pranks are set up based on recent incident the General Election the principal mainland threat reports and the perceived mainland UK threat. remains the criminal element and the thrill seeking The teams are tasked with minimal information nutter (sorry - disaffected person !). Added to this is and expected to extract the required information the proliferation of Internet sites listing how to make from police and other witnesses. Operators are homemade explosives and bombs coupled with no then required to assess the problem and deal shortage of schoolboys willing to give it a go (one with the device, usually employing both remote was even caught selling bombs to his mates at and manual techniques with full forensic school). The recent exposure of the Mardi Gras considerations. At any one time up to three Bomber as a pair of genial old pensioners highlights teams can be on the ground at various stages that anyone can be a threat. of a task that may last from one to two and a With the exception of the MK8b wheelbarrow there half hours. has been little visible movement in IEDD equipment, however an extensive development programme is For anyone with a professional interest Exercise currently examining all areas of IEDD operations and Resurgent provides an ideal opportunity to promises some significant developments in both witness IEDD operations at first hand and, techniques and procedures in the future. although numbers must be restricted, visitors are welcome. Anyone wishing to attend as an The FDS HQ EOD team: observer should contact Insp EOD at Fleet Diving SO EOD - Lt Cdr (Dave) BATE Ext 4121 Squadron Headquarters. InspEOD - WO(D) (Andy) BRUNTON Ext 4137
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7 7
Tel: Tel: Mil: 93832 4116 4116 93832 Mil: Civ: 01705 224116 224116 01705 Civ:
Clearance diver continues to flourish today. today. flourish to continues diver Clearance Hampshire, P06 4TT. 4TT. P06 Hampshire,
integration into the Area Diving Units. The RNR RNR The Units. Diving Area the into integration Horsea Island, Cosham, Portsmouth, Portsmouth, Cosham, Island, Horsea
only minimal training was needed to ensure rapid rapid ensure to needed was training minimal only Fleet Diving Headquarters, Reclaim Building. Building. Reclaim Headquarters, Diving Fleet
industry. Employing only ex-RN Divers meant that that meant Divers ex-RN only Employing industry. Inspector of Ships Diving Diving Ships of Inspector
were then employed in the commercial diving diving commercial the in employed then were CPO(D) BOB HAYTER HAYTER BOB CPO(D)
the personnel recruited were ex-RN Divers who who Divers ex-RN were recruited personnel the
Branch. For the formation of the RNR CD branch branch CD RNR the of formation the For Branch. the first point of contact is: is: contact of point first the
was modelled on the successful Fleet Air Arm RNR RNR Arm Air Fleet successful the on modelled was Diving Branch, or would like any further information information further any like would or Branch, Diving
periods of national tension or war. This initiative initiative This war. or tension national of periods If you are interested in joining the RNR Clearance Clearance RNR the joining in interested are you If
supplement the Regular diving strength during during strength diving Regular the supplement
"Clearance Divers", who would be available to to available be would who Divers", "Clearance achieved. achieved.
was also a need for a small nucleus of RNR RNR of nucleus small a for need a also was annum) providing the required training time is is time training required the providing annum)
and Ships Divers. It was recognized then that there there that then recognized was It Divers. Ships and maximum bounty to be paid, (currently £525 per per £525 (currently paid, be to bounty maximum
Until the mid 1980s the RNR contained only Port Port only contained RNR the 1980s mid the Until Entry within 3 years of leaving the RN entitles the the entitles RN the leaving of years 3 within Entry
leave the RN, permitting immediate entry to the RNR. RNR. the to entry immediate permitting RN, the leave
formally dis-established. dis-established. formally administration can be completed before personnel personnel before completed be can administration
1994 the remaining RNR Ships Divers were also also were Divers Ships RNR remaining the 1994 RN, this is the way ahead for you. Most of the joining joining the of Most you. for ahead way the is this RN,
as the Port Divers were disbanded, and then, in in then, and disbanded, were Divers Port the as service but would like to maintain your links with the the with links your maintain to like would but service
Ships Divers had ceased at around the same time time same the around at ceased had Divers Ships and 45 for Senior Rates. So, if you are leaving the the leaving are you if So, Rates. Senior for 45 and
EAGLET and PRESIDENT. The training of RNR RNR of training The PRESIDENT. and EAGLET The upper age limits for joining are 40 for Junior Rates Rates Junior for 40 are joining for limits age upper The
all teams except those at HMS FLYING FOX, FOX, FLYING HMS at those except teams all
the Royal Navy Reserve, resulted in the closure of of closure the in resulted Reserve, Navy Royal the mentioned above is paid in addition to the basic wage. wage. basic the to addition in paid is above mentioned
In June 1993 a further review, aimed specifically at at specifically aimed review, further a 1993 June In being paid for every day they work. The tax free bounty bounty free tax The work. they day every for paid being
comparable rate to that of their full time counterparts, counterparts, time full their of that to rate comparable
ship's husbandry tasks and seabed searches. searches. seabed and tasks husbandry ship's RNR CD branch. RNR personnel are paid on a a on paid are personnel RNR branch. CD RNR
conducting ship's bottom searches, underwater underwater searches, bottom ship's conducting Currently there are vacancies for all ranks within the the within ranks all for vacancies are there Currently
berthed at the units. They remained in-date by by in-date remained They units. the at berthed
required on the MSFs and other craft that were were that craft other and MSFs the on required remains gapped. gapped. remains
and was capable of supporting the diving tasks tasks diving the supporting of capable was and potential to extend the length of contract if the billet billet the if contract of length the extend to potential
team consisted of between 6 and 14 qualified divers divers qualified 14 and 6 between of consisted team entitlements of the regular serviceman, with the the with serviceman, regular the of entitlements
employed at all of the above RNR divisions. Each Each divisions. RNR above the of all at employed FTRS the RNR Rating or Officer can claim all the the all claim can Officer or Rating RNR the FTRS
to feed the Port Diver Branch. Ships' Divers were were Divers Ships' Branch. Diver Port the feed to between 3 months and 2 years. While serving under under serving While years. 2 and months 3 between
The original function of the RNR Ships Divers was was Divers Ships RNR the of function original The can serve in a gapped billet for a fixed period of of period fixed a for billet gapped a in serve can
Service (FTRS) scheme. Under this scheme personnel personnel scheme this Under scheme. (FTRS) Service
on 1st January 1992. 1992. January 1st on within the diving branch under the Full Time Reserve Reserve Time Full the under branch diving the within
RN diving teams. The RNR Port Divers disbanded disbanded Divers Port RNR The teams. diving RN Opportunities exist for RNR CD's to fill gapped billets billets gapped fill to CD's RNR for exist Opportunities
of ports and anchorage's and to work closely with with closely work to and anchorage's and ports of
support the UK war plan, to assist in the defence defence the in assist to plan, war UK the support techniques in underwater engineering. engineering. underwater in techniques
The primary role of the Port Diving teams was to to was teams Diving Port the of role primary The diver can benefit the Diving Team and help improve improve help and Team Diving the benefit can diver
colleagues. Often, the experience of the commercial commercial the of experience the Often, colleagues.
training at the RN diving school, HMS VERNON. VERNON. HMS school, diving RN the at training therefore expect to work alongside their RN RN their alongside work to expect therefore
employment. The latter underwent the necessary necessary the underwent latter The employment. in current military diving practices and they can can they and practices diving military current in
qualification, or divers recruited direct from civilian civilian from direct recruited divers or qualification, personnel to maintain a satisfactory level of knowledge knowledge of level satisfactory a maintain to personnel
ex-RN regular divers with the minimum ship's diver diver ship's minimum the with divers regular ex-RN The time spent training is designed to enable all all enable to designed is training spent time The
PRESIDENT). The Port Diving teams consisted of of consisted teams Diving Port The PRESIDENT).
EAGLET, SUSSEX, CAMPERDOWN AND AND CAMPERDOWN SUSSEX, EAGLET, Diving who is the branch manager. manager. branch the is who Diving
and were based at 5 RNR divisions (FLYING FOX, FOX, (FLYING divisions RNR 5 at based were and training is co-ordinated through the Inspector of Ships Ships of Inspector the through co-ordinated is training
Port Divers formed the original RNR Diving Teams Teams Diving RNR original the formed Divers Port attend evening training sessions at RNR units. All All units. RNR at sessions training evening attend
Portsmouth. There is no requirement for RNR CD's to to CD's RNR for requirement no is There Portsmouth.
divers; Port, Ships and Clearance Divers. Divers. Clearance and Ships Port, divers; Southern Diving Group in either Devonport or or Devonport either in Group Diving Southern
Armed Forces, the RNR contained 3 classes of of classes 3 contained RNR the Forces, Armed the Northern Diving Group at Faslane or with the the with or Faslane at Group Diving Northern the
Before the 1991 "Options for change" review of the the of review change" for "Options 1991 the Before year in May. The training can be carried out at either either at out carried be can training The May. in year
for their RNR bounty. This is a tax free sum paid every every paid sum free tax a is This bounty. RNR their for
by CPO(D) BOB HAYTER HAYTER BOB CPO(D) by
a minimum of 12 days training per annum to qualify qualify to annum per training days 12 of minimum a
DIVING IN THE ROYAL NAVAL RESERVE RESERVE NAVAL ROYAL THE IN DIVING Every member of the RNR CD branch has to complete complete to has branch CD RNR the of member Every
DIVING IN THE RNR RNR THE IN DIVING www.mcdoa.org.uk www.mcdoa.org.uk
CDBA CONVERSION
JUST A DIT TO WHILE AWAY A MINUTE
By 11 1)(D) TIMMS. Inspector CD.
Just a couple of days ago I returned from CDBA Conversion Course number 1 where I formally qualified as a CDBA Supervisor, but alas not as a diver. I wanted to give a 'Chuck Up', to CPO(D) S BIELBY and his '2nd Dickies', all of whom are on the training staff of DDS, who have taken the complexities of the CDBA and its associated equipment and procedures and turned them into a training course that is concise, understandable and 'passable'. It was good to see user and supervisor equipment confidences grow throughout the course. The last days deep diving was spent conducting minehunting type dives to 60m... without stops!
Don't let me sow the seeds of complacency. Studying during the course and professionalism is required throughtout. As a word of warning, don't forget that CDBA course attendees are reentering the training environment! Make sure any evident rust resting upon basic drills, regulations and procedures is well 'oiled' (and don't forget to arrive at DDS with your Uni-suit as detailed within the joining instructions you will all receive eventually.)
On a lighter note, if weather and time permits the last days diving on the CDBA course is a 24m swim to allow users to ensure that their buoyancy, trim and more importantly ascent rates are correct (1 metre every 4 seconds, yes I'm right, you'll learn) without the aid of a shot rope. On completion of the last 24m swim an AB(D) was heard to say that his dive had been `Pretty', I shuddered as I gave a thought to all those old Chief divers of yesteryear turning in their watery graves.
A pretty dive! I must add that to the list of definitions within the 2806!!!
The name of the AB(D) I will withhold, because I would not wish the man concerned to be further ridiculed ... but if I'm asked! yours Aye.
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foul screw and carry out a shaft survey. 6 turns turns 6 survey. shaft a out carry and screw foul
CFM Portsmouth to clear the remainder of the the of remainder the clear to Portsmouth CFM
Southern Diving Unit 2 (SDU 2) were tasked by by tasked were 2) (SDU 2 Unit Diving Southern to assist in the blade change operation. operation. change blade the in assist to
positioned over the hub to carry a wheeled trolley trolley wheeled a carry to hub the over positioned
Amsterdam was cancelled. cancelled. was Amsterdam underneath the hub. A top frame, with rails, is is rails, with frame, top A hub. the underneath
locked shaft. Unfortunately the visit to to visit the Unfortunately shaft. locked supported by, an inverted A frame slung slung frame A inverted an by, supported
prior to the transit back to Portsmouth with a a with Portsmouth to back transit the to prior blades each side. The bag is connected to, and and to, connected is bag The side. each blades
bights, to allow full ahead pitch to be applied applied be to pitch ahead full allow to bights, top dead centre and the upper portion of the the of portion upper the and centre dead top
by a salvage company to cut off remaining remaining off cut to company salvage a by is inflated over the hub, enclosing the blade at at blade the enclosing hub, the over inflated is
approximately 3 hours and were then assisted assisted then were and hours 3 approximately (similar to a parachute style flotation bag) which which bag) flotation style parachute a to (similar
rope and berthing hawser from the propeller for for propeller the from hawser berthing and rope The habitat is a reinforced coated nylon "bag" "bag" nylon coated reinforced a is habitat The
Ships divers worked to clear bights of steel wire wire steel of bights clear to worked divers Ships
a routine visit to Amsterdam. BIRMINGHAM's BIRMINGHAM's Amsterdam. to visit routine a services (Norwest Divers) and first used in 1995. 1995. in used first and Divers) (Norwest services
a berthing hawser whilst transiting a lock during during lock a transiting whilst hawser berthing a Fred Mcnally and Dave Taylor at F J Marine Marine J F at Taylor Dave and Mcnally Fred
Stbd propeller and hub when the ship picked up up picked ship the when hub and propeller Stbd The inflatable habitat was designed and built by by built and designed was habitat inflatable The
HMS BIRMINGHAM sustained damage to her her to damage sustained BIRMINGHAM HMS
General Description of the Habitat Habitat the of Description General
HMS BIRMINGHAM Repair Repair BIRMINGHAM HMS
2 were the lead team for the evolution. evolution. the for team lead the were 2
Squadron. Squadron. SDU 2 supervised the diving operation as SDU SDU as operation diving the supervised 2 SDU
Portsmouth, by members of the Fleet Diving Diving Fleet the of members by Portsmouth, of Habitat trained personnel. CPO(D) GALE of of GALE CPO(D) personnel. trained Habitat of
BIRMINGHAM's Stbd shaft in March 1998 at at 1998 March in shaft Stbd BIRMINGHAM's were also on site to ensure a sufficient number number sufficient a ensure to site on also were
a CPP Blade change and repair to HMS HMS to repair and change Blade CPP a Support Engineer Officer (Diving) from FDHQ FDHQ from (Diving) Officer Engineer Support
This article details the use of the habitat during during habitat the of use the details article This The WO Fleet Diving Group (WOFDG) and the the and (WOFDG) Group Diving Fleet WO The
Unit 1 (SDU 1) and Northern Diving Group (NDG). (NDG). Group Diving Northern and 1) (SDU 1 Unit
procedures for CPP blade change afloat. afloat. change blade CPP for procedures assistance was requested from Southern Diving Diving Southern from requested was assistance
ME 212 as part of a plan to improve the the improve to plan a of part as 212 ME therefore, to enable the repair to be carried out, out, carried be to repair the enable to therefore,
(Norwest Divers). This course was arranged by by arranged was course This Divers). (Norwest SDU 2 had severe manpower restrictions and and restrictions manpower severe had 2 SDU
in the use of the habitat at F J Marine Services Services Marine J F at habitat the of use the in
Fleet Diving Groups undertook an aquaint course course aquaint an undertook Groups Diving Fleet far better visibility. visibility. better far
In September 1997 members of the Southern and and Southern the of members 1997 September In moved to a non-tidal berth in 3 basin, which gave gave which basin, 3 in berth non-tidal a to moved
To assist the underwater repair the ship was was ship the repair underwater the assist To
out NDE on the crankring whilst afloat. afloat. whilst crankring the on NDE out
environment for divers and the ability to carry carry to ability the and divers for environment bearing clearances with feeler gauges. gauges. feeler with clearances bearing
inflatable habitat, giving a safer working working safer a giving habitat, inflatable after rope guard and measuring A bracket bracket A measuring and guard rope after
The latest development is the introduction of an an of introduction the is development latest The protection plate bolts, replacing the damaged damaged the replacing bolts, plate protection
included replacing wire locking on the hub hub the on locking wire replacing included
facilitate underwater blade change. change. blade underwater facilitate of the other blades in the Habitat. Other work work Other Habitat. the in blades other the of
introduction of nylon blade bolt covers to to covers bolt blade nylon of introduction damaged blade and dress the damaged areas areas damaged the dress and blade damaged
and chain hoists originally used and the the and used originally hoists chain and MSM/W1. SDU 2 were tasked to replace one one replace to tasked were 2 SDU MSM/W1.
torque setting tool to replace the large spanners spanners large the replace to tool setting torque After discussions between the ship, ME 212 and and 212 ME ship, the between discussions After
of Hedley Purvis hydraulic bolt removal and and removal bolt hydraulic Purvis Hedley of
technique used over the years; the introduction introduction the years; the over used technique obtained with an endoscope). endoscope). an with obtained
1982. There have been improvements in the the in improvements been have There 1982. misleading, magnified, results that can be be can that results magnified, misleading,
first used during the Falklands campaign during during campaign Falklands the during used first a true indication of the damage (similar to to (similar damage the of indication true a
afloat was developed in the early 1980's and was was and 1980's early the in developed was afloat video was not of a good quality and did not give give not did and quality good a of not was video
The concept of changing CPP blades whilst whilst blades CPP changing of concept The maximum of 2" from the blade, the resulting resulting the blade, the from 2" of maximum
camera only able to obtain a picture at a a at picture a obtain to able only camera
Introduction Introduction Due to the extremely poor visibility, with the video video the with visibility, poor extremely the to Due
hub, witnessed by the ships MEG and ME 212. 212. ME and MEG ships the by witnessed hub,
Support Engineer Officer (Diving) (Diving) Officer Engineer Support A video survey was carried out of the blades and and blades the of out carried was survey video A
By Lt Mike McLachlan McLachlan Mike Lt By
visibility. visibility.
1998 1998 removed at fountain lake jetty in very poor poor very in jetty lake fountain at removed
HABITAT - HMS BIRMINGHAM, MARCH MARCH BIRMINGHAM, HMS - HABITAT wire rope and the rope guard were subsequently subsequently were guard rope the and rope wire
CPP BLADE CHANGE USING INFLATABLE INFLATABLE USING CHANGE BLADE CPP of 50cm berthing hawser, the remains of the steel steel the of remains the hawser, berthing 50cm of
CPP BLADE CHANGE USING INFLATABLE HABITAT HABITAT INFLATABLE USING CHANGE BLADE CPP www.mcdoa.org.uk
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CPP BLADE CHANGE
Ship's Hull without a baleout cylinder, for transit between surface and the Habitat. The disadvantage of using this rig was the difficulty donning the mask Habitat Bag prior to exiting the habitat. Top Frame and Rails Rigging the Habitat
Prior to rigging the habitat the damaged blade was positioned at TDC, with 19 deg AH pitch Connecting Chains applied, the CPP system was isolated at the OT Box, and the ship tagged out for diving. The first diving task was to remove blanks and Lower Frame bolt a pad eye to the hull above the blade at TDC. Experience has shown that the pad eye positions differ from ship to ship; a Type 42 rarely has a General Arrangement of CPP Habitat pad eye position directly over the blade. BIRMINGHAM's were displaced about 1m aft and Diving Equipment 0.75m fwd of the blade.
Rigging of the habitat is conducted with the diver The upper frame was then assembled on the hub wearing in-service surface supplied diving over the blade at TDC. The frame is of a 2-piece equipment (KMB 17 or 18) but using a small bale construction with saddles that position over the out cylinder and a 40M umbilical. hub and support rails which run along the length of the hub, protruding forward and aft of the blade. The frame is secured with spansets To work inside the habitat safely it is essential around the hub. that the divers come off gas, unclip their umbilical and remove weights and fins. The The lower frame was assembled ashore and got edges of the blades are sharp and an umbilical ready to be slung vertically into a position continuously chafing against the blade edges outboard of the lower 2 blades. The dockyard would be liable to fail. Additionally there is only crane driver failed to turn up, reporting that no limited space inside the habitat and the ability cranes could operate in the dockyard due to high to erect and operate lifting gear and Headley winds. A bottom line was rigged and the lower Purvis bolt removal equipment would be seriously hindered if trailing an umbilical.
To enable the diver to easily remove and replace his facemask, a hybrid surface supplied diving equipment has been designed, with consultation with Inspector of Diving. This equipment consists of a surface supplied, positive pressure AGA mask, worn with a simple harness. This equipment is solely for transit between surface and the habitat. Once inside the habitat the mask and umbilical are removed from the diver and stowed in purpose made pockets adjacent to the point of entry. A secondary air supply for the divers is supplied by connecting a first stage reducer with hose, second stage demand valve and mouthpiece to the small baleout cylinder. This can be worn by the diver, strapped to his leg, for ease of use in an emergency.
This hybrid diving equipment was unfortunately not available at this time so dispensation was given by Superintendent of Diving to use KMB, 10 www.mcdoa.org.uk
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11 11
obstacle was due to the connection at the top of of top the at connection the to due was obstacle
bellybands, but further investigation found the the found investigation further but bellybands,
due to incorrect rigging of the strops and and strops the of rigging incorrect to due
tension. Initially the problem was thought to be be to thought was problem the Initially tension.
but the strops around the fwd seal took up no no up took seal fwd the around strops the but
inflation continued. A good seal was obtained obtained was seal good A continued. inflation
The retaining ropes were slackened off and and off slackened were ropes retaining The
the "ears" being secured too close to the frame. frame. the to close too secured being "ears" the
habitat. During inflation problems arose due to to due arose problems inflation During habitat.
frame and reduced HP air applied to inflate the the inflate to applied air HP reduced and frame
hub. The 2 "ears" were then secured to the lower lower the to secured then were "ears" 2 The hub.
strops secured by a metal bellyband beneath the the beneath bellyband metal a by secured strops
shackled to the bottom frame. with a further 2 2 further a with frame. bottom the to shackled
positioned fwd and aft as marked, and the rest rest the and marked, as aft and fwd positioned The 8 Habitat securing strops were then then were strops securing Habitat 8 The
lowered over the hub and blades, with the seals seals the with blades, and hub the over lowered
the bag was under water it was opened out and and out opened was it water under was bag the
of the bag would have aided this process. Once Once process. this aided have would bag the of
leave surface; a down line connected to the top top the to connected line down a surface; leave
the water. It was still a struggle to get the bag to to bag the get to struggle a still was It water. the
trapped air and then lowered upside down into into down upside lowered then and air trapped
rope along its length to minimise the amount of of amount the minimise to length its along rope
then prepared for deployment by binding with with binding by deployment for prepared then
aft of the damaged blade. The habitat bag was was bag habitat The blade. damaged the of aft
The other trolley was then located on the rails rails the on located then was trolley other The
and A bracket. bracket. A and
due to the limited clearance between propeller propeller between clearance limited the to due
trolley to allow the wheels to locate on the track track the on locate to wheels the allow to trolley
and the blade was not correctly aligned on the the on aligned correctly not was blade the and
strop to facilitate lateral movement onto the hub hub the onto movement lateral facilitate to strop
have been a chain hoist on the end of the crane crane the of end the on hoist chain a been have
The slinging plan was flawed as there should should there as flawed was plan slinging The
space between the hull and the top of the rails. rails. the of top the and hull the between space
slinging the blade and trolley into the confined confined the into trolley and blade the slinging
problems with the sling design, which hindered hindered which design, sling the with problems
did not go as planned; There are inherent inherent are There planned; as go not did
then secured with 2 spansets. This evolution evolution This spansets. 2 with secured then
into place on the rails at the fwd end of the hub, hub, the of end fwd the at rails the on place into
positioned and secured on a trolley and slung slung and trolley a on secured and positioned
with a mobile crane from CFM. The blade was was blade The CFM. from crane mobile a with 22 has a divergent nozzle) nozzle) divergent a has 22
replacement blade, which duly arrived, along along arrived, duly which blade, replacement the seal sliding off the cone on the hub. (Type (Type hub. the on cone the off sliding seal the
During this time the ship was hastening the the hastening was ship the time this During rig retaining strops on to the spansets to prevent prevent to spansets the to on strops retaining rig
after seal is also troublesome; it is necessary to to necessary is it troublesome; also is seal after
to the hub. hub. the to guard and A bracket legs (approx 70mm). The The 70mm). (approx legs bracket A and guard
bottle screws tightened to secure the 2 frames frames 2 the secure to tightened screws bottle small dimension of the flat area between rope rope between area flat the of dimension small
connected between upper and lower frame and and frame lower and upper between connected seal at the A bracket on a Type 42 due to the the to due 42 Type a on bracket A the at seal
protruding through. The inboard chains are then then are chains inboard The through. protruding Type 22 hub, which makes it difficult to obtain a a obtain to difficult it makes which hub, 22 Type
underside of the hub, with the lower blades blades lower the with hub, the of underside habitat body. The habitat was designed for a a for designed was habitat The body. habitat
frame to be floated into position against the the against position into floated be to frame spanset is placed over the seal, close to the the to close seal, the over placed is spanset
the lower legs of the lower frame to allow the the allow to frame lower the of legs lower the is then tensioned with a spanset. An additional additional An spanset. a with tensioned then is
rail. Flotation devices (air bags) are inflated on on inflated are bags) (air devices Flotation rail. between the habitat material and the hub, which which hub, the and material habitat the between
of the frame and the outboard side of the top top the of side outboard the and frame the of The seals are made with 1" neoprene strips strips neoprene 1" with made are seals The
securing chains are connected to the top 2 legs legs 2 top the to connected are chains securing
in a vertical position outboard of the blades the the blades the of outboard position vertical a in the restraining strops over the bottom frame. frame. bottom the over strops restraining the
frame was then manhandled into the water. Once Once water. the into manhandled then was frame of the material positioned to line up the ends of of ends the up line to positioned material the of
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CPP BLADE CHANGE
the bag to the pad eye. The pad eye was not bags were positioned between the blade root directly over the blade and was causing the bag and the rails to soak up any spillage, should it to tilt forward, preventing the strops taking any occur. In practice it was found that if the strain. The bag was again deflated and the pressure in the Habitat is greater than the head decision made to remove the connection to the of oil in the hub there was no spillage. Once the pad eye. A good seal was then obtained. blade was removed the exposed crank ring was evacuated of surface oil using a hose connected The divers then had a good check round prior to a container at the surface (habitat pressure to entering the habitat. Once inside the habitat forces oil to the surface) and prepared for dye the diver removes his weights and fins and then penetrant testing. comes off gas. The next task is to rig secondary The MEO witnessed the dye penetrant procedure on the video monitor on the surface and was then able to debrief the diver (SEO(D) with the aid of the video and talk through any minor concerns. The clarity of the video was excellent as a high- resolution digital camera was used, which possibly gave a better indication than the naked eye. Due to the highly toxic nature of the substances used to carry out this procedure it was necessary for the divers to wear breathing apparatus with positive pressure facemasks (AGA)
The crank ring was then cleaned, seals were renewed and the new blade slid into position, air supplies, lights, communications and a video lifted clear of the trolley, trolley removed and the camera. The habitat is supplied with a blade lowered into position. Hedley Purvis gear continuous supply of reduced HP air (4 bar) from was then used to tighten and torque the blade the charging panel in the dive store, to ensure a bolts in the laid down sequence. Plastic blade safe, breathable atmosphere at all times. To bolt covers were then cut and faired off after prevent the reducer lifting the pressure relief insertion. valves on the charging panel it is necessary to isolate the charging panel and HP air reservoir Additional Repairs on the quarterdeck from the HP air ringmain and reduce the pressure to below 207 bar. In the The fwd trolley was then removed and the area event of a ship emergency this section can easily between the A bracket and hub inspected for be reinstated and diving halted. further damage. The A bracket bearing retaining ring was seen to be damaged, with 2 studs Blade Change sheared off. The remaining studs and the retaining ring were removed. The habitat was An "A" frame is erected inside the habitat to act then de rigged to give better access and after as a strongback for slinging the blades. The drilling and eazi-out the damaged studs were frame is located on the ends of the upper frame removed. New retaining ring, studs, nuts and and secured to the top of the habitat to prevent split pins were then fitted. movement whilst slinging. Once the frame was rigged the blade bolt covers were drilled, tapped The fwd rope guard was unbolted from the A bracket and pulled out then the blade was unbolted using (without separating the 2 halves) and slid up the shaft Hedley Purvis gear. The blade was then lifted to gain access for taking bearing clearance using 2 lever pulls slung from the lifting frame. readings.Whilst this work was progressing a video The trolley aft is slid into position under the lifted was taken of the remaining blades. The damage was blade and the blade then lowered. The trolley discovered, in improved visibility, to be only minor. was then pushed back to its original position. After consultation with the MEO and MSM/W1, and There was some concern prior to this stage with agreement by ME 212 it was clear that the damaged regards to oil spillage from the hub, even with areas could be dressed with a smooth file and wet the CPP system isolated at the OT box. Dryzit stone without the use of the habitat. 12 www.mcdoa.org.uk
www.mcdoa.org.uk
13 13
Outfits. Outfits.
flights. flights. the 2 new habitats for the CPP Blade Change Change Blade CPP the for habitats new 2 the
DAC clearance for commercial and military military and commercial for clearance DAC the deficiencies highlighted will be rectified in in rectified be will highlighted deficiencies the
transportability in a C130 and have been given given been have and C130 a in transportability continuation training. Lessons were learnt and and learnt were Lessons training. continuation
outfits have been cleared by JATE to ensure air air ensure to JATE by cleared been have outfits HMS BIRMINGHAM proved to be excellent excellent be to proved BIRMINGHAM HMS
or commercial divers. The CPP blade change change blade CPP The divers. commercial or replacement blade into position. The repair to to repair The position. into blade replacement
anywhere in the world, by suitably trained military military trained suitably by world, the in anywhere did not involve rigging the frames or slinging the the slinging or frames the rigging involve not did
allow water borne exchange of CPP blades blades CPP of exchange borne water allow acquaint, at F J Marine premises in a test tank, tank, test a in premises Marine J F at acquaint,
CPP Blade change outfits being developed to to developed being outfits change Blade CPP have had to rig the habitat on a live ship. The The ship. live a on habitat the rig to had have
Portsmouth and will be an integral part of the 2 2 the of part integral an be will and Portsmouth This was the first occasion that military divers divers military that occasion first the was This
maintained by PSSE store at Devonport and and Devonport at store PSSE by maintained
Type 23 FF. The new Habitats will be stored and and stored be will Habitats new The FF. 23 Type reclaimed. reclaimed.
accommodate the Skew blades being fitted to to fitted being blades Skew the accommodate lower edges of the habitat and could be easily easily be could and habitat the of edges lower
procuring two further CPP Habitats, designed to to designed Habitats, CPP further two procuring any enter the water it would be contained by the the by contained be would it water the enter any
The habitat used is a prototype. ME 212 are are 212 ME prototype. a is used habitat The leak can be contained with Dryzit bags or, should should or, bags Dryzit with contained be can leak
oil contamination of the water. Any oil that does does that oil Any water. the of contamination oil
Future Developments Developments Future giving environmental benefits as there is minimal minimal is there as benefits environmental giving
the head of oil in the hub and the CPP system, system, CPP the and hub the in oil of head the
have over run by an estimated 2 days. days. 2 estimated an by run over have The air pressure in the habitat is greater than than greater is habitat the in pressure air The
to dress all the remaining blades the task would would task the blades remaining the all dress to
timescale, although had the habitat been used used been habitat the had although timescale, the divers. divers. the
The repair was completed within the estimated estimated the within completed was repair The surface provide a safer working environment for for environment working safer a provide surface
good visual and audio communications with the the with communications audio and visual good
Waiting time time Waiting
0.5 day day 0.5
blades is easier due to the trolleys. Additionally Additionally trolleys. the to due easier is blades
Replacing rope guard guard rope Replacing 1 day day 1
out in a controlled manner and handling of of handling and manner controlled a in out Replacing wire locking locking wire Replacing 0.5 day day 0.5
Dressing blades blades Dressing 0.75 day day 0.75 communications overcome. The lifting is carried carried is lifting The overcome. communications
A bracket clearances clearances bracket A
1 day day 1
problems associated with poor visibility and and visibility poor with associated problems
Removing and replacing A bracket bearing retaining ring ring retaining bearing bracket A replacing and Removing 1 day day 1
Lifting and slinging of blades is safer, with the the with safer, is blades of slinging and Lifting De-rigging Habitat Habitat De-rigging 0.5 day day 0.5
Dye Penetrant Penetrant Dye 0.25 day day 0.25
Changing CPP blade blade CPP Changing
1 day day 1
the video monitor. monitor. video the
Rigging inside habitat habitat inside Rigging 0.5 day day 0.5
can witness all operations from the surface on on surface the from operations all witness can Rigging habitat bag bag habitat Rigging 0.5 day day 0.5
Slinging blade into position position into blade Slinging 1 day day 1 without the need to dock the ship, and ships staff staff ships and ship, the dock to need the without
Rigging top and bottom frame frame bottom and top Rigging