A Short History of Timing
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Ivanpah and the Beginnings of of a “Playaology Redux “Article, Which Will Probably Appear in a Future Issue
The Fastest X 2 | The Weather | The Trivia | The Book | The Gale From the Editors Contents Dirtboating magazine is published online from an undis- closed location or locations in the western United States, Page 4 Landsailing In America probably nowhere near Area 51and not to close to Roswell e thought the second issue of Dirtboating magazine might not actually Publishers and editors: Duncan Harrison Blake Learmonth happen, despite Duncan’s unbridled enthusiasm. It was supposed to be the Page 10 Smith Creek Weather W“September Issue,” but barely made it for November and the advertisers were screaming Please assume that everything you see is copyrighted for their money back (that is the first outright lie in this issue*). by someone. On the other hand, over the years I have been given literally Page 16 Landsailing Trivia thousands of landsailing images, almost never with any First, it seemed like no one was going to write an article, which is pretty much the death clear indication as to who the photographers were. If you knell for any magazine ,whether print or pixel. Just when things looked darkest , Bob Dill Page 20 World’s Fastest Sailors stepped up with his article on the fastest sailors on the planet coming to Ivanpah and the beginnings of of a “Playaology Redux “article, which will probably appear in a future issue. Page 24 World’s Fastest Surface Then Duncan and Bob somehow found “The Weather Guy,” Bill Clune, and Duncan’s weather at Smith Creek article got more than just the requested technical support. Every time I opened my email Duncan had written a couple more things. -
Trimarans and Outriggers
TRIMARANS AND OUTRIGGERS Arthur Fiver's 12' fibreglass Trimaran with solid plastic foam floats CONTENTS 1. Catamarans and Trimarans 5. A Hull Design 2. The ROCKET Trimaran. 6. Micronesian Canoes. 3. JEHU, 1957 7. A Polynesian Canoe. 4. Trimaran design. 8. Letters. PRICE 75 cents PRICE 5 / - Amateur Yacht Research Society BCM AYRS London WCIN 3XX UK www.ayrs.org office(S)ayrs .org Contact details 2012 The Amateur Yacht Research Society {Founded June, 1955) PRESIDENTS BRITISH : AMERICAN : Lord Brabazon of Tara, Walter Bloemhard. G.B.E., M.C, P.C. VICE-PRESIDENTS BRITISH : AMERICAN : Dr. C. N. Davies, D.sc. John L. Kerby. Austin Farrar, M.I.N.A. E. J. Manners. COMMITTEE BRITISH : Owen Dumpleton, Mrs. Ruth Evans, Ken Pearce, Roland Proul. SECRETARY-TREASURERS BRITISH : AMERICAN : Tom Herbert, Robert Harris, 25, Oakwood Gardens, 9, Floyd Place, Seven Kings, Great Neck, Essex. L.I., N.Y. NEW ZEALAND : Charles Satterthwaite, M.O.W., Hydro-Design, Museum Street, Wellington. EDITORS BRITISH : AMERICAN : John Morwood, Walter Bloemhard "Woodacres," 8, Hick's Lane, Hythe, Kent. Great Neck, L.I. PUBLISHER John Morwood, "Woodacres," Hythc, Kent. 3 > EDITORIAL December, 1957. This publication is called TRIMARANS as a tribute to Victor Tchetchet, the Commodore of the International MultihuU Boat Racing Association who really was the person to introduce this kind of craft to Western peoples. The subtitle OUTRIGGERS is to include the ddlightful little Micronesian canoe made by A. E. Bierberg in Denmark and a modern Polynesian canoe from Rarotonga which is included so that the type will not be forgotten. The main article is written by Walter Bloemhard, the President of the American A.Y.R.S. -
IHS Newsletter 2012
First Quarter 2012 The NEWS LETTER John Meyer, Editor‐in‐Chief International Hydrofoil Society Martin Grimm, Sailing Editor PO Box 51— Cabin John MD 20818—USA Barney C. Black, Publisher Hydrofoil to Heaven By Yoichi Takahashi 高橋洋一 IHS Member One day I ventured forth from my Kidugawa City home in Kyoto Prefecture and drove east for 3‐1/2 hours to Toba City in Mie Prefecture, a distance of about 150 km. Toba is a popular tourist desnaon at the southern entrance to Ise Bay. Toba’s greatest claim to fame is as the birthplace of cultured pearls. The area is rich in lobsters, fish, and other seafood off the Rias Coast of the Shi‐ ma Peninsula. The beauful shoreline has a saw‐tooth profile that creates unique scenery with a succession of capes and inlets, deep green remote islands, and pearl culture ras floang Inside this issue on the waves. My purpose was to visit the PT‐50 Hydrofoil Restaurant. Yes, you read correctly. In the township of Jeoil — The Good . 2 Matsuo, alongside the sightseeing President’s Column . 2 road R167 sits one of many restau‐ rants. But this restaurant immediately Have YOU Hugged a Hydro‐ catches the eye because Ousho, a re‐ foiler today? . 2 red and re‐purposed PT‐50 hydrofoil ferry, sits proudly on the roof. Welcome New Members . 3 The PT‐50 was one of the most popu‐ Tacoma Marime Fest . 12 lar hydrofoil ferry designs of the 1960s and 1970s. Inially constructed in the Leopoldo Rodriquez Shipyard at Messi‐ Ousho PT‐50 Hydrofoil (Connued on page 4) Harbor Wing Autonomous Unmanned Surface Vessels (AUSV) The 2nd Quarter 2009 IHS Newsleer intro‐ government, commercial, environmental, duced the Harbor Wing Autonomous Un‐ domesc, and internaonal markets. -
TEMPLE NEWS August 2020
TEMPLE NEWS August 2020 A reminder that you may contact the office for IT’S AUGUST AND WE’RE SO HAPPY TO information/advice. Please email Kathryn at BE BACK ON THE WATER [email protected] or Elizabeth at [email protected] A message from Martin Morgans, Vice Commodore, sent before he set off on the first post-lockdown cruise. As, at the very least, a hint of normality has returned to our lives it is great to see that at last sailing has returned to the Royal Temple Yacht Club. The Cruisers have taken some small steps with a few ad-hoc run outs, with two weeks in Holland only days away followed by the East Coast and France. The racers are out all be it double handed, but they are out, with three races already completed. Six handed racing begins shortly. And lastly the RC Laser racing has returned to the club with new vigour and fresh faces. Saturdays at the Royal Harbour is fast becoming a tourist attraction thanks to the high-spirited competition which, after only four outings, has all the commitment of Formula One! The bar has taken its first tentative steps in the process of returning to normality with limited weekend opening 12.30 until 4.30pm. As the new chair of the Bar Committee I ask you to support the bar more than ever before. The current limited opening will increase to 250 CLUB DRAW RESULTS SO FAR reflect the need for it, the goal being to return February 2020 to normal opening hours just as soon as you, £25 No 12 Mr R Formison o the members, indicate by your attendance that £50 N 149 Mr J Williams £100 No 124 Mr C Richardson it is justified. -
September 17-11 Pp01
ANDAMAN Edition PHUKET’S LEADING NEWSPAPER... SINCE 1993 Now NATIONWIDE Happy Birthday Your Majesty IT’S INSIDE TODAY December 1 - 7, 2012 PhuketGazette.Net In partnership with The Nation 25 Baht ALL MOBILE TOUTS NEED TO TAKE A HIKE, SAYS KARON MAYOR Karon Beach Extradited Aldhouse to arrive from UK SaturdayThis week to seesstand touts hit hard biggest-evertrial for slaying issue of Walking touts along Karon, yourAmerican Phuket Marine Gazette Kata Beaches face imminent Full story on Page 2 legal action as raids continue Clock still ticking for Paris Hilton New Year By Irfarn Jamdukor beach extravaganza WITH only a month left, Sydicitve THE Mayor of Kata-Karon Municipality this week ramped Element has yet to win over local up his campaign to clear all walking touts from the beaches authorities and gain the necessary and beachfront roads in the popular tourist areas of Kata approval for the three-day New Year and Karon. beach party announced by Paris Municipality officers targeted the illegal beach touts Hilton in October. during the Loy Krathong festival, which was observed by millions of Thais across the country on Wednesday. Full story on Page 4 The beach-cleanup campaign began softly last month with the municipality issuing warning letters to beach food Officers to establish vendors in the area, including those selling food at beachfront roadside stalls or from motorbikes with side- routes for underpass cars, Mayor Tawee told the Gazette on Tuesday. emergency vehicles “After issuing the warning, we fined many vendors, with each one facing a fine of up to 2,000 baht,” he said. -
How Fast Can a Sailboat Go?
How Fast Can a Sailboat Go? Alan Kruppa 1 Introduction Race, a no-rules, no-limits, round-the-world sailboat race set to begin on December 31, 2000 [1]. At the 65+ knot speeds achieved by modern high-speed sailboats, the hydrodynamic efficiencies of hull ele- ments play the dominant role in top speed performance yet the combined aerodynamic efficiencies of sail and superstructure elements begin to play an increasingly balanced role. It becomes necessary, therefore, to opti- mize high-speed sailboats for supercavitation hydrody- namically and low parasitic drag aerodynamically. A new design with a patented sail and hull configuration is introduced and shown here to have the best combi- nation of aerodynamic and hydrodynamic efficiencies, maximizing the theoretical boat speed to wind speed ratio achievable when looked at in the context of the Beta Theorem. From this section onward, a bold-italics convention is used to build the roadmap connecting the theory to the design. New concepts are introduced in bold and then summarized in numbered statements in ital- ics, which are the essence of the roadmap. 0. A bold-italics convention is used to build the roadmap connecting theory to design. 2 Inspiration Growing up in a landlocked small town, I was never Figure 1: My inspiration for this endeavor: the Team exposed to sailing but was always fascinated with it. Philips catamaran as taken from the January 2001 issue And when it came time to pick a college, this fascina- of Popular Science tion might have had something to do with my selection of the Naval Academy, especially considering the infor- mation booklet about the school had a cover photo of One boat purpose-built for this event, the Team Philips students sailing on one of the Academy's 44 foot sloops, catamaran skippered by Pete Goss and shown in Fig- which the booklet explained was one of twenty Navy 44 ure 1, was the most extreme and beautiful of the fleet. -
MHA September 2013 Journal
MARITIME HERITAGE ASSOCIATION JOURNAL Volume 24, No. 3. September 2013 Website: www.maritimeheritage.org.au A quarterly publication of the Maritime Heritage Association, Inc. C/o: The Secretary (Leigh Smith), 1 Meelah Road City Beach W.A. 6015 Editor: Peter Worsley. 12 Cleopatra Drive, Mandurah, W.A. 6210 Email: [email protected] HMS Success Hove to off Carnac Island, Western Australia – 1827 Painting by Ross Shardlow See article page 7 1 The Maritime Heritage Association Journal is the official newsletter of the Maritime Heritage Association of Western Australia, Incorporated. All of the Association’s incoming journals, newsletters, etc. are now archived with Ross Shardlow who may be con- tacted on 9361 0170, and are available to members on loan Please note that to access the videos, journals, library books, etc. it is necessary to phone ahead. (If you have an unwanted collection of magazines of a maritime nature, then perhaps its time to let others enjoy reading it. Contact the Association; we may be interested in archiving the collection.) Material for publishing or advertising should be directed, preferably typed or on disk, to: The Editor, 12 Cleopatra Drive, MANDURAH, Western Australia, 6210. [email protected] Except where shown to be copyright, material published in this Journal may be freely reprinted for non-profit pur- poses provided suitable acknowledgment is made of its source. The MHA is affiliated with the Royal Western Australian Historical Society (Incorporated) www.maritmeheritage.org.au MHA End of Year Windup & Book Sale When: 10 am, Sunday 10 November, 2013 Where: Hicks’ Private Maritime Museum 49 Lacy Street, East Cannington For catering purposes please let Doris know if you will be there. -
Catalyst N42 Apr 201
Catalyst Journal of the Amateur Yacht Research Society NUMBER 42 APRIL 2011 Sailrocket 2 Takes to the Water ii Catalyst 3 The Launch of Vestas Sailrocket 2 5 Matt Layden’s Paradox design and the cheap roller-reefing standing lug sail Robert Biegler 8 Sailing a Faster Course Part 5 - Downwind Calculation and Unsolved Mysteries Michael Nicoll-Griffith 19 Discussion on Sailing a Faster Course – Go Straight Paul Ashford Author’s Reply 23 Members News - North West England Local Group 24 Catalyst Calendar Cover picture: Sailrocket 2 launching photo: Fred Ball APRIL 2011 1 Catalyst Innovation is what it’s all about! Journal of the Amateur Yacht Research Society Our front cover and lead story this edition are about Sailrocket 2, an innovative sailcraft if there ever was Editorial Team — one. Based on the ideas of “40-knot Sailcraft” Smith, Simon Fishwick the Sailrocket boats have shown that his vision, widely Sheila Fishwick derided at the time, had merit and could be applied practically. As we go to press, Sailrocket 2 is in Namibia and in the space of a few weeks has been tested and worked up to achieve speeds of over 40 knots. The real test will come next Autumn, when the steady winds Specialist Correspondents blow, and Team Sailrocket have scheduled a month to Aerodynamics—Tom Speer Electronics—Simon Fishwick attempt the World Speed Sailing record, currently held Human & Solar Power—Theo Schmidt by a kitesurfer at 55.6 knots. Hydrofoils—Joddy Chapman Iceboats & Landyachts—Bob Dill One wonders what would have happened if AYRS Kites—Dave Culp John Hogg Prize? It did not exist at the time, but I Multihulls—Dick Newick would like to think he would have been in the running Speed Trials—Bob Downhill for the £1000 prize. -
Latitude 38 January 2014
Latitude 38 Latitude VOLUME 4 4 WE GO WHERE THE WIND BLOWS JANUARY 2014 JANUARY VOLUME 439 MIDWINTER RACING OPPORTUNITIES WWW.PRESSURE-DROP.US LATITUDE / ANDY ERIK SIMONSON / / SIMONSON ERIK San Francisco Bay delivers some joy these conditions, making midwinter a diehard, you can sign up with more of the most exciting sailing conditions racing extremely popular and a great than one club and race pretty much the world over — primarily in the sum- time to hone one’s sailing skills. all winter long. Check out Calendar on mer. Come wintertime though, cooler This is probably why the majority of page 12 of this issue for details. weather, lighter breezes, stronger cur- yacht clubs, from Santa Cruz to Valle- Some rough math shows that well rents and even the chance of the occa- jo, run midwinter regattas. Unlike in over 300 boats are participating this sional rain squall change the sailing dy- the busier summer season, yacht clubs season. This number doesn’t include namic dramatically. For many, though, slow the pace during the winter and of- 100+ boats that race in Richmond YC’s this is an opportunity not to be missed. ten host just one or two races a month Big Daddy or the 100+ boats that are It turns out a lot of sailors really en- on a specifi c weekend. But if you are expected at the Corinthian YC’s two up- Spread: It's often about having momentum and being in the available breeze, as was the case at Berkeley YC's midwinter series on the Olympic Circle December 14. -
C-Class Catamaran Wing Performance Optimisation
C-CLASS CATAMARAN WING PERFORMANCE OPTIMISATION A thesis submitted to the University of Manchester for the degree of Master of Philosophy in the Faculty of Engineering and Physical Sciences 2011 By Nils Haack School of Mechanical, Aerospace and Civil Engineering Contents Abstract5 Declaration6 Acknowledgements8 1 Introduction9 1.1 Aims.................................. 11 1.2 Objectives............................... 12 2 Literature Review 13 2.1 Wingsails............................... 13 2.1.1 C-Class Catamaran development - the history of the class 13 2.1.2 Wingsail occurrence in other sailing classes......... 16 2.1.3 Wingsail research....................... 16 2.2 Physics of sailing........................... 20 2.2.1 Wind: velocity variations with height............ 20 2.2.2 Apparent wind........................ 21 2.2.3 Righting moment....................... 23 2.2.4 Forces on a boat....................... 24 2.2.5 Boat performance requirement for fleet and match racing. 26 2.2.6 Sailing upwind........................ 26 2.2.7 Downwind sailing....................... 28 2.2.8 Summary of wingsail requirements for a C-Class catamaran 29 2.3 Computational Fluid Dynamics (CFD)............... 30 2.3.1 Governing equations..................... 30 2.4 Near wall flows............................ 31 2.4.1 Flow physics.......................... 31 2 2.4.2 Modelling of the near wall flows............... 32 2.4.3 Grid requirements....................... 34 2.5 Turbulence modelling......................... 35 2.5.1 Reynolds Average Navier-Stokes (RANS).......... 36 2.5.2 Reynolds stresses....................... 37 2.5.3 The k − model....................... 39 2.5.4 The SST k − ! model.................... 40 2.5.5 Choosing a turbulence model................ 40 2.6 Finite volume method........................ 42 2.6.1 Interpolation......................... 43 2.6.2 Discretisation........................ -
Sailrocket Is Fastest Sail Boat on the Planet
www.aerotrope.com PRESS RELEASE: SAILROCKET IS FASTEST SAIL BOAT ON THE PLANET image©Sailrocket http://www.youtube.com/watch?v=dokkkqBcyPQ&feature=share&list=UUcoYIGpTo2WCjyPkG0WvO2w “Sailrocket”, a boat designed in Britain has become the fastest sailboat on the planet. On Tuesday 12th November Vestas Sailrocket 2 reached a peak speed of 61.92 knots (71 mph or 115 kmh), averaging 54 knots over 500 metres while sailing off the shore of Walvis Bay, Namibia. The team around pilot Paul Larsen have spent the last 10 years chasing their dream to build the fastest boat, a record that was previously held by the French sailors of “Hydroptére”. Sailrocket’s average speed of 54 knots is just shy of the outright world speed sailing record, which currently stands at 55.65 knots and was set in 2010 by the US kite surfer Rob Douglas. The world record title is within the grasp of the Sailrocket team and can be broken any day now. Around the world the sailing community is following the campaign via Twitter, with immediate updates coming straight from ‘speed spot’ on the coast of the Atlantic ocean in Southern Africa. All runs are officially ratified by the WSSRC (World Sailing Speed Record Council). The unusual concept of the boat is the brain child of Malcolm Barnsley of Southampton and designed in collaboration with Aerotrope Ltd, wind energy engineers based in Brighton. Vestas engineer Barnsley credits the idea of the unsual aerohydrofoil to Bernard Smith, an American rocket scientist. The name “Sailrocket” illustrates the fact that she is half boat and half plane. -
Hull Speed 2017.Pdf
HULL SPEED AN INSIGHT INTO THE PRINCIPAL BARRIER TO HIGH SPEED UNDER SAIL ALAN SKINNER HULL SPEED AN INSIGHT INTO THE PRINCIPAL BARRIER TO HIGH SPEED UNDER SAIL ALAN SKINNER PREFACE Sailboat design is an art and, as for all art, success demands not only the development of natural talent but also an intimate knowledge of the subject. For sailboat design, the accumulation of that knowledge has been a lengthy, evolutionary process, beginning in prehistory and achieving a significant level of advancement by the time of man's earliest records. The proas and double canoes of Oceania, the junks of Asia and the Viking ships of Europe typify the extraordinary refinement and diversification of evolutionary design evident throughout the history of the maritime world. Although aided by increasingly sophisticated technology, modern sailboat design is essentially an extension of that evolutionary process. Today, the theory of all boat design is regarded as an engineering science, whereby the behaviour of a vessel is explained by the application of mathematics. However, some factors that determine the performance of a boat, especially under sail, are still seemingly impossible to resolve other than by empirical methods. Consequently, the theory of certain aspects of sailboat design remains limited to broad principles, the interpretations of which are dependent on the adeptness of the designer. Shaping a hull to reduce resistance is the most fundamental, most studied but generally the least understood feature of design for all types of vessels. Surface waves caused by the forward motion of a hull represent a major component of a vessel‘s total resistance.