Mainsheet

NOVEMBER 2009 RUPES RAMBLINGS... INSIDE THIS IS- SUE :

RUPES RAMBLINGS Winter draws on! With the Freeman Iceberg underway in some pretty heavy conditions and Christmas approaching fast, it’s tempting to either look forward RECORDERS NOTES to next spring or back to last summer. Certainly this year has been one to remember for the club both on and off the water. UPDATE ON ALEX We are now firmly on the map as a club with some of the best facilities on the MILLSMILLS----BARTONBARTON south coast, especially as we now own the Seaford site, and after the event we can rightly claim to be able to run events of the highest standard while USING A VHF RADIO still keeping that ‘small club’ welcome thanks to everyone getting stuck in to help. The clubs own events have also been a great success this year, TROPHY WINNERS definitely helped by better weather than we have had for a couple of years, but mostly due to members just doing what they enjoy in good company. SAILING SECRETARY COMMENTS The sailing school has been very busy this year, which bodes well for future membership. Thanks to all the instructors for their time and effort to make this BILL GILES NOTES ON such a success. We hope to carry on with a bit of winter maintenance on Wednesday nights at DESIGN Seaford, to try and get the clubroom looking a bit more presentable. The idea is

for a couple of hours work before a little liquid

refreshment, so nothing too arduous. If you can help, please give Darren or Chris a call.

DATES FOR Looking forward, we are planning to have a Haggis YOUR DIARY Bash around Burns Night and we also hope to have a minibus going to the Dinghy Exhibition in early March. Keep a look out on the web site for details or talk to Gilly Jones for the Haggis Bash and Tom Taylor for the Dinghy Show. VHF COURSE 12TH & 19TH That just leaves me to wish you all a Merry Christmas and a Happy New Year. And if anyone has contact with Father JANUARY 2010 Christmas, could they put in a good word for a new pair of wet suit boots – extra large? 7PM TO 10 PM SEAFORD CLUCLUB-B-B-B- H OU SE SUNDAY LUNCH at Seaford Clubhouse Jane and Clive will be providing Sunday Lunch from 13.00 to 14.00 on LOOK ON THE the following selected dates during the winter season: WEB FOR 6th December, 10th January, 7th February, 7th March FURTHER more details from Jane & Clive on 01323 891818 DETAILS

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ALEX UPDATE ....

Alex`s trip to Nova Scotia for the Worlds didn`t His results brought reward and he has just re- start very well, we broke down on the way to ceived an invitation to join the Olympic programme Heathrow, and finished the journey by taxi. as a TGS member, an elite squad of 7 sailors in- The Senior World Laser Championships is cluding 4 of the existing Olympic transitional and very different from any other event, firstly you are development squad who have potential to achieve allocated a boat, sail and spars and then spend a at Olympic, World and European level. couple of days race tuning to get the best out of it. His next port of call will be Palamos, Spain in Once racing began Alex put in some reasonable December for the Christmas race and hoping to results, the goal was to get into the Silver fleet improve on his 10th place in last years grade 2 anything higher at this level would be a dream, European regatta. 168 sailors from 51 countries and they only send their best guys to compete.

Huricane Bill brushed the Nova Scotia coast mid way through the event and disrupted racing for a couple of days but thankfully there was no damage or injury. Alex finished the event 27th in silver and 83rd overall, which was his target, as one only a hand- ful of under 19`s to qualify for the event it was it was pretty good result, for his first Worlds.

Back to the UK and and down to a busy end of season, the first Autumn Qualifier was only 8 days after the highs of Nova Scotia, on home waters at Seaford he put in a strong performance to finish in 10th. Berthing of Boats and Boards A week later he was in Weymouth for Sail for Gold the event was very strong this year even mak- In the recent storm at Seaford a number of boats ing gold fleet was going to be tough, he just made fell over in the boat park and a number of boards it by 1 point but the amount of sailing, training and were blown across it. These could have been dam- aged and could easily have caused damage to others. traveling was taking its toll, he improved a few Please ensure your boats and boards are tied down places but faded on the last day to finish 45th. well. It is your responsibility, and, if damage is After a week without sailing and only a little light caused to other boats, you will be held liable. A num- fitness training he was back rejuvenated and ready ber of boat covers were either ripped totally off for the next qualifier in Eastbourne, day 1 saw boats, or damaged by the gale. One boat was tied to him win his first race at senior level and start day its road trailer and was still blown over along with 2 as overnight leader. the trailer.

Unfortunately with Olympic, World and European You must use the ground anchors to secure your boat chamipon Paul Goodison and newly crowned Sail- or board, the trailer alone is not sufficient. ing World Cup winner Nick Thompson on his tail he couldn`t hold on and slipped to 3rd, his best ever So, if you have not checked your boat or board since the last gale I strongly recommend that you do so. result on the senior circuit.

It is recommended that masts are taken down over One more qualifier to go back in Weymouth, the Winter period and boats inverted. strong winds delayed the racing for a couple of hours and the fleet eventually launched in 20+ kts We will be checking any boats left down early in the of breeze, a dnc on race 3 dropped him back into New Year, and may impound those whose berth fees the mid teens but a 5th in the only race held on are overdue. Sunday pulled him up to finish 11th. Chris Turner Alex finished the season 11th in the UK senior rankings, top under 19 Laser youth sailor in the UK and and 2nd Under 19 in , not a bad haul for 2009.

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It is necessary in the UK and much of the World to be licensed to use the VHF radios such as on our club boats and from the race control box. Fortunately the channels on which our radios are set do not need licensed opera- tors. The channels we are permitted to use without licences are known variously as P1 and P2 or M1 and M2 or Ch 37 and 37A. The Race Control Box radio is fixed on the P1 management channel, unlike the radios on the club boats which can be tuned on to channels which require a licence. The boat radios are set up so that they can use other channels which do require the operator, or someone supervising the operator, to be licensed. Fortunately one does not need to be licensed to (a) listen or (b) to operate in an emergency. The latter is so that our rescue boats can talk to the Lifeboat in an emergency.

Even if you do not hold a VHF Short Range Certificate (SRC) it is still useful to know how to operate the radios properly. There are certain rules which are legally binding and some rules which are intended to make the use of the radio more efficient. To deal with the legal aspects first:

1. You must not use information accidentally heard over the radio and not intended for you.

2. You must not transmit music over the radio.

3. You must not use the radio with bad language (swearing, profanity or racist remarks etc).

4. You must identify yourself and the person whom you are calling. There are exceptions when you can call ‘ALL STATIONS’ in an emergency.

To use the radio efficiently and effectively there are certain procedure words (prowords) which are used and there are also certain conventions:

1. Use the radio on low power setting if possible (does not interfere with another station up the coast).

2. Make sure that you release the transmit button when you have finished (otherwise nobody nearby can transit).

3. When you start talking identify yourself twice or 3 times and your intended recipient similarly 2 or 3 times. This is in case they do not pick up on the transmission on the first or second go. Use something like ‘Rib, Rib, Rib this is Arrow, Arrow, Arrow – Over.’

4. The word OVER is a proword and means that you have finished speaking but expect a reply.

5. When Rib answers, Arrow having got attention might reply ‘Arrow, this is Rib, go ahead, Over.’ They would identify the caller and receiver only once each time having established the link.

6. When they have finished their conversation the final message ends with the proword ‘OUT’. Do not use terms such as ‘OVER and OUT’, ‘ROGER, WILCO’ etc if you do not want to yourself out as a fan of second rate war movies!

If you have to call an emergency then you need to use the proword MAYDAY. This is the equivalent of dialling 999 for the emergency services. It is done when life is in danger or a vessel is in distress. The message is trans- mitted on Channel 16. The form of the message should be:

Mayday, Mayday, Mayday

This is {your boat name} { your boat name}{ your boat name}

Your location (generally you would be in Seaford Bay) What constitutes the emergency

How many people in danger

How to identify the craft in danger

Any other useful information

Finally: Mayday {your boat name}

(At this point do not forget to release the button on your radio)

You will get a LOT of attention with a message like this. Do not worry unduly if you say Mayday only twice or some similar minor error – nobody is counting and going to say ‘Aha – you got it wrong.’

Finally, do not practice Mayday calls with real radios. This is the equivalent of the warnings on TV where they say ‘Do not try this at home’. It can get really expensive if you actually call out the emergency services!

VHF course – my brief above does not qualify you so you still need to do the course! There will be a VHF course held in the Club at Seaford on Tuesdays 12 and 19 Jan 2010 starting at 7pm finishing at 10pm. The cost is £50 which is substantially less than any commercial offering as it includes the licence and examination.

If you would like to do the course email Bill at [email protected] . Include your name and mobile number.

Bill Giles

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Trophies and Awards 2009

Class Championships Slow Fleet Development Tamlin Cup not awarded Series 1 Laser Churston Cup Matthew Springall Series 2 Laser Teapot Trophy Laurence Venus Series 3 Laser Little Cup not awarded Class Championships Laser Laser Trophy not awarded Class Championships (ex.Series 2) Secretaries Cup Not awarded series 1 Laser Radial No Trophy Chris Turner series 2 Laser Radial No Trophy Darren Field Series 1 Squib Hedges Cup not awarded Series 2 Squib Samphire Mugs not awarded Series 3 Squib Squib Bowl not awarded Class Championships Squib Tempo Cup not awarded Series 1 No Trophy not awarded Series 2 Fireball No Trophy not awarded Series 3 Fireball No Trophy not awarded Class Championships Fireball Fireball Fleet Tankard not awarded Series 1 No Trophy Terry Jones Series 2 Dart No Trophy not awarded Series 3 Dart No Trophy not awarded Class Championships Dart Trophy Michael Godwin Series 1 Sunday pm Lycidas Trophy Steve Duncan and Charlie Gribble Series 2 Sunday pm Challenge Cup Matthew Springall Alice Smith, Rupert Smith, Sasha Series 3 Sunday pm Roberts Cup Stonnard 1 Fast Wednesday Trapidos Trophy Edward Thorburn 1 Slow Thursday Enterprise Trophy not Awarded 2 Fast Friday Blois Johnson Cup Rupert Smith and Chris Turner 2 Slow Saturday Wallis Cup Not awarded 1st overall Squib Sunday Squib Cup Not Awarded 1st overall Laser Monday Trophy Not Awarded Vice Commodores Brighton Race Cup Michael Veale and Sarah Veale Portobello Race Howatson Cup Not awarded Cuckmere Race Gunfleet Trophy Not Run - poor weather. Birling Gap Race Seven Sisters Trophy Not Run - poor weather. Squib Long Dis- tance Condor Cup Not awarded Commissioning Race Commodores Cup Ed Thorburn 1st Race of year 's Cup Ed Thorburn Tufton Beamish Cup Tufton Beamish Cup Rupert Smith and Chris Turner Sussex Express Cup Sussex Express Cup Ed Hall

PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com Cup Winners Cup Cup Winners Cup Not Awarded Burfoot Cup Burfoot Cup Not Awarded Pursuit race Pegasus Trophy Ed Thorburn Seahaven Cup Seahaven Cup Alex Mills Barton Best sailor not winning any other trophy Chairman's Cup Tom Taylor Male helm Cadet Helm Nathan Bloss Cadet Female Helm Tina Trophy Alice Smith Cadet crew (male) RNLI plaque James Veale Cadet crew Tina Trophy/Rose (female) Bowl NA Best crew Crew's Cup Chris Turner Best Ladies Ladies Crew's Cup crew (base? Arf and Arf Lady helm MERLIN PLATE?? Arf and Arf COURAGE/ Courage ENTERPRISE Helfrid Hochegger Cadet showing commitment to sailing. Tony Barr Trophy Jonty Freeman Games Tourney Games Tourney Cup Cup Ruth Rhodes Neil Arnott Class Tro- Miracle Class phy Not Awarded Sailing Week cadet Champi- onships Len Miller Cup Nathan Bloss

SUNDAY SERIES at Piddinghoe has now started This fun event is open to sailors of all levels, beginners at racing are particularly welcome. Race starts at 11.00.

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Recorder's Notes Sunday AM Series 3

The results for the last races held at Seaford for 2009 Some strong winds and rough seas meant that only the are:- Squibs were able to sail in race 2 & 3 allowing Ralf to take Brighton & Back full advantage of the conditions in which he excels. Was sailed in light winds starting with a force 2 NW breeze then about half a mile pass the harbour arm 1s t 'Hendrika' Squib helmed by Ralf Teubert and crewed by the wind died away completely. After about 20 minutes Stuart Little. a light sea breeze filled in. The course was shortened to a buoy off Ovingdene. From there on it was a reach with 2nd Dart 15 Sprint 1531 sailed by Mike Godwin. a gentle steady light breeze, in warm sunshine, all the 3rd 'Hot Toddy' RS 200 no. 582 helmed by Michael Veale & way back to Seaford Bay. crewed by James Veale.

Although Moonshadow was first boat back by more than Unfortunately the Cup Winners Cup and Burfoot Cup were 20 minutes, Hot Toddy won on handicap. not held due to bad weather. If you wish to look at all the results in detail you can see 1st 'Hot Toddy' RS 200 No.582 helmed by Michael them on the Clubs website. Veale & crewed by Sarah Veale. Laurence Venus. 2nd 'MoonShadow' helmed by Laurence Venus & crewed by Ross Turner.

3rd Laser2 6509 helmed by Chris Turner & crewed by Sasha Stonard.

Sussex Express Cup For Sale

Was held in strong winds on the Saturday and light winds on the Sunday. Tom and Catherine Taylor won Squib 732 ( Hendrika) race 3 in their . However, Ed and Tim who sailed Lasers were both ahead in the series on equal points but since Ed won the last race he takes the cup on a tie Race winner!! break rule. Ready to win more ! 1st Laser 404 sailed by Ed Hall, Top condition 2nd Laser Rad 16 sailed by Tim Cox. 3rd Comforthbly Numb Fireball 14242 helmed by Chris Turner . 2 mains, 2 jibs,1kite,

Sunday PM Series 3 twin axle trailer and lots more £3500 Only two races were held in this series which was won by a cadet. Well done Alice. ring Ralf 01323 890662 1st 'Black Magic' Laser2 6545 helmed by Alice Smith & or ralf @sailors.co.uk crewed by Rupert Smith in one race and Sasha Stonard in the other race.

2nd 'Moonshadow' helmed by Laurence Venus & crewed by Ross Turner.

3rd Laser 86 sailed by Matt Springall .

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Dates for your diaries from the Sailing Secretary

The Sailing Programme for next year has been completed and will be sent out on renewal of memberships.

We are trying out some new ideas for next season – please feedback to Management Committee members any positive or negative comments.

• From May through to September we will run back to back races on Sunday Mornings – these will be in sepa- rate series so you can choose to sail in one or both. PM races also form a separate series/ • During July and August there will be a series of Saturday races, starting at 1600 followed by either a DIY barbeque evening or food from the Galley if Jane and Clive are doing one of their themed evening meals. • If there are more than 3 multi-hulls on the water, there may be a separate course laid for them to have their own competition. • There will be a conference for all Race Officers on Wednesday 17 th March at 7.0pm, at Seaford Club House. We hope that all RO’s will be able to attend. • There will be a conference of all Rescue Boat skippers on Wednesday 24 th March at 7.0pm at Seaford Club House. We hope all boat skippers will be able to attend.

Some important dates to book into your diaries now. ....

06/03/2010 Sat Dinghy Show outing TBA Working Party -Seaford 09:30 Sun 07/03/2010 Working Party -Seaford 09:30

13/03/2010 Sat Working Party - Piddinghoe and Seaford 09:30

14/03/2010 Sun Working Party - Piddinghoe and Seaford 09:30

17/03/2010 Wed Race Officers Conference. 19:00

21/03/2010 Sun Working Party - Piddinghoe and Seaford 09:30

24/03/2010 Wed Rescue Boat Skippers Conference 19:00

28/03/2010 Sun Commissioning Race 11:00

17/04/2010 Sat Open Day Piddinghoe 10:00 Open Day Seaford and Newhaven 10:00

28/04/2010 Wed Wednesday Series 1.1 19:00

06/06/2010 Sun Brighton and Back (Open) Portobello Race (Open) 11:00

20/06/2010 Sun Federation Event – Pevensey Bay 11:00

03/07/2010 Sat Saturday Fun day 1 – then every Saturday 16:00

31/07/2010 Sat Expedition 11:00

02/08/2010 Mon Sailing Week (Open) – all week

26/09/2010 Sun Birling Gap/ Cuckmere Haven (Open) 11:00

07/11/2010 Sun Freeman Iceberg begins –Piddinghoe 11:00

01/01/2011 Sat New Years Day race 14:00

PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com CENTREBOARD DESIGN

Over the last 200 years the science of aerodynamics and its cousin hydrodynamics have come on in leaps and bounds. Some great advances were made by the Germans during WWII which led to the development of the Con- corde, Space Shuttle and putative Mars Mission. Also building on these earlier advances the Russians developed Ground Effect Vehicles which, had the USSR not failed, might have revolutionised global travel. Some of those same advances led to the research of Donald Campbell, who held the World Water Speed Record in the 1960s when he built extremely efficient boats. WW II also led to many of our currently popular dinghy classes such as the , Miracle, , Fireball, Enter- prise, , , , and etc etc. These were all based on the huge advances in wood and glue tech- nology, Some, eg Fireball, Mirror etc, were made of flat sheets of marine ply whereas others were made of moulded ply (eg Firefly, Albacore etc). All of these boats relied on the technology of the time which was limited by the mate- rials available. With modern materials and ideas from an earlier age remarkable things became possible. One only has to look at how the use of photography and the discovery of transistors has revolutionised electronics with our fabulous internet and computers. Despite some difficulties many modern technologies have become available to the amateur. There are many people making devices of carbon fibre, complex shapes though DIY 3D printing technology and Computer Numerical Controlled (CNC) home devices. One of these meetings of old and new technology is in the backwater science of hydrodynamics. It has therefore become possible to construct highly efficient aerofoil shapes for and rudders (although the latter work through greater angles the new developments are not very efficient). Firstly, a little science. Water like all liquids, is virtually incompressible. However, it can come under pressure. Like air, water, when it goes through a constricted space accelerates and the pressure drops. (This is the basis of Bernoulli’s Theorem which accounts for how aircraft and sails drive boats. Secondly, all free water contains dissolved air. Thirdly, the temperature at which water boils depends on the air pressure. At sea level pure (distilled) water boils at 100°C, at 10,000ft the water boils at 185°F and so on (sorry I am mixing old and new!) Fourthly, dissolved air comes out of suspension in water as the temperature rises. If you look in a saucepan of water as it heats up you will see bubbles emerging long before it boils. Also, generally, you can get nothing for nothing.

However, by clever hydrodynamics water (which cannot easily turn sharp corners) is induced to flow through the cen- tral chamber into tiny vacuum pockets (VP). These are specially shaped chambers at 90 degrees to the main flow. What happens is that as water starts to flow a vacuum is created in the VPs. The water, now at such a low pressure in the VPs, boils. Under normal circumstances this would not create additional pressure but the air in the water comes out of suspension and heats up to. This steam and superheated air need somewhere to go and are eject into the stream of water going by. But the clever shape of the VP projects the impulse rearward. This gain in energy projects the foil forward with more energy than it takes to drive the centreboard and the VPs. The VP technology is in its infancy but has huge potential. If you are a dinghy sailor you may have felt its accidental effects as poorly designed or accidental VPs create minor disturbances and cause rudders (and to a lesser extent CBs) to vibrate. In general these effects do not help performance as do properly designed CBs with VPs. Of course centreboards work mainly at low angles of attack but rudders need to turn at larger angles to steer the boat. This reduces the efficiency of the effect and the VPs stall and actually start to cause excessive drag. Of course rotating leading edges to rudders is much more efficient (see Marine rudders and control surfaces: principles, data, design and applications. By Anthony F. Molland)

Note that work on VPs is mostly classified (eg the shape of the VPs) but some unclassified material can be viewed at the USAF website on VP Bernoulli at www.vpbs.com. So if you see Mid Life Crisis going faster this winter –you know why!

Bill Giles

I am in the fortunate position of being able to take on more work. All aspects of building work undertaken, from new builds to property maintenance and building repair. Steve Duncan Brickwork

01323 873893 07989104512

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