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Just to muddy the waters - The class rules for all three active IRSA international classes (IOM,10R, M) follow the same general format for their class rules, and give jurisdiction for measuring to the recognised national authority in each member country. The format is structured to reflect the Equipment Rules of Sailing (ERS). Section A for each of the Class Rules use BOLD type as a reference to defined terms in the ERS and all three classes use the term Official Measurer. I have found an anomaly - the issue is that the term Official Measurer is not a defined term in the ERS. The defined term in ERS is Certification Measurer. The wording is consistent with what we would intend for an official measurer but is not identified correctly. I have reported this discrepancy to the IRSA to verify and to follow up with the ICAs. From the ERS C.4.4 Certification Measurer A person appointed or recognised, by the MNA of the country where the control takes place, to carry out certification control and when the class rules permit, certification. An MNA may have delegated this responsibility. John

With 3 weeks to go to the Fleetwood 50th Anniversary Radio Marblehead Nationals, we have 38 entries so 12 short of our target "50 boats for 50 years!" We've got lots of things planned to make this event a great celebration of 50 years of Radio Marbleheads, with a display of some of the earliest Radio Marbleheads from the early 70's & 80's, some extra one-off trophies for the highest placed classic & vintage boats, and a great late summer Barbeque and 50 years of Marbleheads quiz on the sat night for all competitors helpers and guests. All this and the racing too, for just £25.00. So If you're not one of the 38, please come & join us!!

Yes, its an AI generated image and makes no sense at all :)

Colin The base is fixed and the mast gate adjusts the nominal rake angle. Peter

Adding to Lester's comments, I use the shank of a drill bit as spacer, add an extra twist to the first part of the knot - the extra friction holds it in place while tying the second half.. Then a dab of crazy glue to lock the knot, and finally trim the ends. John

Spear design, built by Martin Dovey, hull - carbon and Kevlar. Hull colour: Signal blue. RMG winch and switch New deeper rudder Sails, Design 2 Sail: Light No 1 main and jib Heavy No 1 main and jib No 2 main and jib No 3 main No 4 main Certificate Price £ 3995 Sail No 96 is a personal sail number. The boat is at Gosport, Hampshire. Please contact Peter Fothergill 07771 552646 Available free with the boat: Fr Sky Taranis Lite Tx, 2.4 GHz Battery charger for the Tx Fr Sky R8 PRO Rx, 2.4 GHz Rx battery LiFeP04 2000mAh

I spent all of my dinghy and cruiser sailing days on the sea... I now radio sail on a strongly brackish lake, and even with a wave of a couple of inches adept boat handling skills are needed to tack without stalling... I cannot imagine sailing a 65 on the sea!

"It's one of those rules that doesn't make much sense if you are the customer." "Seems odd (and/or illogical) for an "International" class. How tortured and officious does this really need to be?" As I understand it, the point of requiring the Certification Measurer to be appointed or recognised by the MNA of the country where the control takes place is to establish jurisdiction. In the case of GBR, this means that the MYA can take any steps necessary to ensure trustworthy certificates and, if needed, to pursue dodgy practices. Otherwise, a measurer not appointed or recognised by the MYA (or RYA) is "out of reach".

Sounds illogical but complies with the Class Rules as detailed above in the post that provides the reasoning from the IOMICA VC Technical ...

"Select "Yes" if you want official IOM measurer to measure and officially mark your sails (signature) so they are ready to be used on next IOM class regatta." While Sailboat RC will have the sails measured exactly as stated (by an independent measurer, not a specially licensed "in-house" measurer), they do not make it clear that the sails are only "ready to be used" in CRO.

.. and if they were coming to Australia would need to be remeasured by an ARYA approved measurer to be accepted as class compliant under the NCA.

Hi Michael, this question was discussed on the IOMICA forum. Essentially you are asking about IOMICA licenced 'Certified Sailmakers' https://www.iomclass.org/phpBB3/viewtopic.php?p=13188#p13188 If you do not have access, here is the question and the answer. John Certified sailmakers Post by Art Prufer » Sun Feb 15, 2026 9:02 am According to this rule: G.2.2 CERTIFICATION (a) Except where sails are certified as in (b) the official measurer shall certify sails in the tack and shall date each with the date of certification control. (b) An MNA may appoint one or more persons at a sailmaker to certify sails produced by that manufacturer. A special licence shall be awarded for that purpose. AND ON THE RIG MEASUREMENT FORM: MAINSAILS 31. G.2.2(b) If the sails have been certificated by a manufacturer awarded a special license, then omit steps 32 to 60 HEADSAILS 60. G.2.2 (b) If the sails have been certificated by a manufacturer awarded a special licence, omit steps 62 to 86 Where can we get the list of manufacturers who have been awarded this special licence, and what sail markings are required to indicate that they have been 'pre-certified' ? Last edited by Art Prufer on Mon Feb 16, 2026 12:53 pm, edited 1 time in total. Art Prufer CRYA #1189 Can 42 and the answer from IOMICA Andrew Crocker Vice-chairman (Technical) Re: Certified sailmakers Post by Andrew Crocker » Thu Feb 19, 2026 1:45 pm Hi Art, Thanks again for your question. The short answer is that there are no licensed IOM class sailmakers in the terms of Class Rule G.2.2(b). G.2.2(b) was adopted into the IOM Class Rules from the World Sailing Standard Class Rules (SCR) and refers to the World Sailing In-House Equipment Certification (IHC) programme – see https://www.sailing.org/inside-world-sa ... ification/. At present, the International One Metre class is not a participating class association and, given the way in which the IHC programme operates, it is difficult to see how it would be feasible. As a result, there are no certified IOM sailmakers. The VC Measurement is reviewing this process with a view to making it more relevant for IOM sailmakers and owners. Regards Andrew

We had a good Sunday in the Fleetwood club house updating 3 existing boat certificates with new or additional rigs, and 2 old Sea Scamps measured and updated. Many thanks to Peter Iles, Paul Middleton and John Sharman for holding the other end of the tape measure. Whenever we do these open measuring exercises normal club members always comment on they didn't realise what was involved in measuring and all learn a lot about their pride and joy. We have a few more to measure over the next week. If you want yours measuring so you can enter the event and sail with similar boats just ask.

Here we have for sale an old Marblehead that is very pleasing to the eye, with nice gentle curves. The fin is permanently fixed in which was the norm back in the day, short fin ideal for shallow lakes or ponds. There is a rudder servo fitted but no winch. Mounting plate for an RMG Buyer collects from Huddersfield West Yorkshire or I'm willing to meet half way on the motorway network within reason. £75 On a separate listing there are two carbon rigs that would suit this boat, just a little fettling required. damian.ackroyd@gmail.com 07808 255425

Hi Colin the 'how long' is easy - while mark room exists. See the definition of Mark Room and R 18.2(b). And for your comment about a poor rounding and space being given, see WS Case 63, where you take such room 'at your own risk'. But in this example, 71 was sailing close to the mark and there was no opening to sail into - perhaps an issue with depth perception but poor sailing non the less. John

Hi Olivier, I think I understand why it took so long - there were two boats directly involved, and three boats that were at least witnesses or more seriously, parties to the protest, so that takes time to hear each person. John

Thanks John and Olivier. I agree with you, however we do not know what claims were made by the skippers at the protest hearing that could have led to a long discussion. I think the main take-away is that if a boat is clear ahead approaching the zone, ANTICIPATE that you will have to give her mark room, so plan to be able to pass astern – and if that requires that you hail any boats around you to provide that room – do it early. If you are the mark room boat, protest if you are hit. If you are the trailing boat and hit a boat with mark room – then take a penalty turn – that will cost less pain than being DSQ in a hearing and save everyone time. I have attached a write up of the incident including some screen grabs, and have created a diagram that a Protest Committee may have constructed to arrive at a decision. John Incident at downwind mark.pdf

I don't understand how this issue could lead to a long and unsolved protest, situation is quite clear, no overlap between 71 and 23 entering the zone... 71 gives room to 86 then rounds the mark and is hit by 23 while doing it.... then 23 luffs because of contact with 71 and touches 190. 23 DSQ rule 18.2 twice...

Dear All, ITCA is please to announce that CRO will be hosting the 12th 10R class Worlds. All details on the class homepage. The NoR will and an event homepage will be published shortly. International Ten Rater Class Association

GBR is right in my opinion. The second letter has a corner at bottom left which reveals it as a B (certainly not a 0) and the small piece of what's left of the first letter indicates the bottom of the vertical stroke of a G, which would also put the GBR nicely centred above the number whereas, if it was a 1 the ehole set would be off centre....

Yes! It's definately a VC2 (Venceremos mk2) or otherwise known as Syan after the very famous A class raced by Peter Maskell of the Leeds & Bradford club in the 1980's. Other famous models to this design are Corsario (my boat) WISIWIG owned by David Rose & Graham Reeves, and there wer several others owned by David Geldard Richard Costigan and Mike Harris, but the names have escaped me!! There were 2 fairly modern versions one all carbon (Evolution) sailed by Josh & Greg King, racing 3 weeks ago in the Vane A Nationals. Hope this helps.

One thing I found useful was to make a set of 'outside' templates. Once you start fairing the mould it's amazing how far out of true you can get, particulalry between stations. If you hold the larger template between stations you can judge the eveness of the gaps. For the last one I made a cradle of outer templates on the strongback to hold the hull true while a put in the keel box etc. The bare shell is very flexible and easy to twist and distort if it is not properly supported

I've used chatgpt a few times recently, and found it pretty useful, if only to collate and summarise things that actual human beans have said somewhere. But retain or start with your own knowledge first where poss. I've sometimes responded to ai with "but surely that doesn't make sense because xyz", and it responds "yes, you're right, good catch". I've even had "ah, yes, your solution is better than mine". And smilies.... very creepy.... Skynet/Terminator here we come! It can be useful, but use with care, never forget the A in AI ;)

Hmmm, yes I'd be doubtful to take that as guidance/gospel. I know nothing about 10r exoticity (real word...), but I did notice the carbon-encapsulated battery....? And the servo which seems to operate an athwartships lever (adjustable keel cant?). Oh, and isn't screwed down... Two un-enclosed pcbs (extreme weight saving?)... A pretty pic, but looks a bit too lovely

I like the fact that it only has shrouds on one side - a proa perhaps? Your plan shows the winch drum above the deck. I haven't seen a boat like this in years and would highly recommend having the drum below the deck as it is so much easier to keep the water out like this. You will need to choose between a continuous winch line and a single ended winch line and whether to have the winch line (and the tensioner) above or below the deck. The latter looks better but is so much harder to repair at the lakeside. On my 10Rs I use 2 winches with single ended winch lines exiting right at the stern and these pull the sheets directly. This saves the friction (and expense) of turning blocks. I tension the lines with fishing pole elastic that runs in a loop to the bow and joins the two winch lines. There are many other ways of doing it and I seem to be in a minority of one in using two winches.

The first step was getting my little shop space sorted out and building a simple torsion box out of MDF as a platform for the strong back.

I have used this method of bending the shrouds to hook directly into the mast. https://www.facebook.com/iomsdownunder/videos/another-tip-to-make-building-a-rig-just-a-little-easier-thanks-to-graeme-howie-f/1492045977491350/ It is simple and works. John

Hello to all, as a relative newcomer to the sport of model yachting I would like to put forward a suggestion that more help be given to anybody on what is a large learning curve, maybe in the way of some marking on the boat/sails to let those who have more sailing experience know that you are a slightly less experienced skipper than them selves or a event for the likes of myself were the rules are shown in detail and maybe sail with a mentor alongside???. Before there are numerous well meant reply's saying join a club and they will be only to happy to show you the ropes I do belong to a MYA club but and there is always a but the likes of yesterday when all skippers were sailing for club points, 19 boats I believe, not fully understanding the rules and some of the meanings of the rules even though I have read them and studied the diagrams, as I am sure you will understand it get's a bit disheartening when you think you are making some headway with your sailing to be if I may use the term " chastised " for turning to starboard when you should be turning to god knows were when you are some what surrounded by four or five other boats, or you reach the mark were you think you should be to be told " do a 360 you touched another boat " 5 boats at the mark, ok which one. It makes me wonder how many other budding rc yachtsmen have given up after a short time and turned to another hobby, so maybe the MYA or the clubs completion secretary's might be able to come up with a proposal to help and encourage new comers like myself and I feel sure a few others with similar thoughts?????? Thank you for reading this bit of a ramble, but if it helps to promote a brilliant hobby. Cheers

A quick update. The ASBO has surfaced with some help from the marvelous Cotswold Model Yacht Club members (Barry Trueman and Garry Stevenson in particular), Swindon Sub Aqua Club divers (x2). Thanks to the outstanding build quality and design from Barry Chisam the hull appears to be in good condition. The electrics and electronics are less good and will need a complete overhaul. What is clear is that the yellow #8 will sail again. Thanks too go to the myriad people, MYA members, Builders, Designers and fellow IOM sailors all over the world who have offered and given great support and its clear to me that this sailing community is more about family than winning: OK on the water winning might take pride of place but off the water its a great team. Simon Clarke deserves a special mention for lending me one of his spare boats and I'm most grateful to him. I've started to look for a new boat in any case and have several feelers out for a replacement. Of note the divers from Swindon Sub Aqua Club are happy to assist with diving lead recovery of boats and are prepared to travel upto 45 minutes from Swindon to assist. I can't recommend them highly enough. I'll put up so pictures of the recovery in due course in a separate thread. Also I'll make the repair/restoration of the boat a separate thread to encourage any readers. The winch will need some TLC and the remainder of the system will be replaced. All in all a tough day at the lake but one with a happy ending. Why not come and visit us at the lake and I promise to keep my boat on the water not under it.