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Status of Class: Adopted Administrative Body: IOMICA

Since its inception in the late 1980’s the International One Metre (IOM) has become the most popular class in the UK.

Sailed at most clubs on a regular basis it is now the class that creates the largest fleets, with regular fleets of 30 boats at district level and a maximum entry at most international events. The class rules for the International Classes are governed by the International Radio Sailing Association (IRSA) and IOM ICA.

• IOM GBR Events here
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• Please visit our Knowledgebase or Q&A for more help
• You will find further Q&A relating to the IOM Class here
• previous post: Measurement and Certification Procedure
• next post: Marblehead Class (M)

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Click the picture to get to the boat's page The IOM Class The International One Metre class was created by Jan Dejmo, with the support of Graham Bantock and the Permanent Committee of the ISAF-Radio Sailing Division, and adopted by ISAF-RSD in 1988. The intent was to pull together a variety of "One metre" class rules from different countries, and provide for a common, restricted, inexpensive international class of stable, easily-built designs. The result is the most popular RC racing yacht class in the world. The class has enjoyed such success because competitive IOMs can be built by an ordinary modeller at home, and due to the class restrictions competitive boats remain competitive for a number of years. IOM rules The performance of a RC yacht depends on hull lenght, beam, displacement, sail area, bulb draft, ballast ratio and rig plan. The only parameter than can be freely changed is the beam, all others are restricted by the IOM class rules. Therefore it is primarily differing beams and positions of maximum beam, which distinguish the different IOM designs. In addition to performance factors, the class rules explicitly restrict certain materials and construction methods in order to keep the class inexpensive and able to be built by an amateur builder. Radio control is restricted to two channels. Appendages and sails can be made of any material. A competitive boat can be built at home.

Pegasus Radio Sailing Club

model yacht radio sailing on Lake Pegasus Canterbury New Zealand

On-Going Event Information

Usa international one metre national class association.

Welcome to the USA IOM NCA website! Below you will find recent newsletter posts, to include results, regatta reports, and other class news! Please take a moment to click below and sign up to our website to receive email alerts for newsletter posts and to assist us in maintaining a complete contact list of USA class members!

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.]

As the IOM class is popular at all levels from local club Sunday sailors up to the highly competitive "pot hunting" Championship skippers, your Editor has asked me to consider the key points which will appear in the revised ISAF-RSD rules due to be adopted on March 1st 2001 [and finally adopted in March 2002!] and to give you an insight into the reasoning behind the changes and the effects they may have on your building, checking, and registration for this summer's racing programme.

The old 1995 rules labelled the hull and appendages as "development" items, and the rig and sails as "one-design" items. The new 2002 rules now label all of the boat as "closed", meaning that if something isn’t explicitly permitted by the rules, that something is automatically prohibited. This approach to defining the IOM now implies that, if there is anything about the boat that is not clearly permitted, the boat is presumed to be out of class. Guilty until proven innocent. This element of the Napoleonic Code can be a bit of a shock to Anglo-Saxons, but much of the rest of the world operates this way quite cheerfully.

The advantage of closed rules is that they do not need updating every time some new materials, methods, or ideas appear. Closed rules also bring measurable consistency and conformity. The other advantage is that, in some sense, the interpretation and application of closed rules should become less adversarial – less "us versus them" – and more naturally cooperative – more "us with them".

The disadvantage of closed rules is that there has to be lots of them, and there has to be lots of things that must be checked. This is the price that must be paid if the IOM class is to remain fully international, popular, stable, and inexpensive. In my opinion, it is certainly a price worth paying to keep the IOM class true to its original vision and original purpose.

Measurement of the boat is now split into four quite separate areas. Previously, all of a boat was measured "at once" and a single certificate was issued. Thereafter, the boat could be checked at an event. We now have four distinct occasions of measurement: "Fundamental measurement", "Event measurement", possible "Sail manufacturer certification", and "Owner preparation".

The table gives a very rough estimate of the number of measurement questions that are answered during the complete measurement of a boat with three rigs, comparing measurement under the old rules with that under the new rules.

	Hull & appendages	Rig & sails	Sail identi- fication marks	Total
Old rules	22	79	71	172
New rules:
Fundamental measurement	15	31	-	46
Sail manufacturer certification	-	48	15	63
Owner preparation	-	-	56	56
Event measurement	7	-	-	7

"Fundamental measurement" consists of the bulk of the old rules measurement to do with the rigs, hull, and appendages. The remainder of the old rules boat measurement is split between "Event" and "Sail" measurement. Most of the measurement of the sail identification marks has become the owner’s responsibility to comply with the rules to do with sail numbers .

There is a new provision which allows a sail manufacturer to do most of the sail measurement, and to supply a certified sail. This sail would have the sail manufacturer’s certification at the tack. The sail manufacturer would have to apply for, and receive a licence from, the RYA (in the UK) in order to be specially authorised under this provision. If the sail is not certified by its authorised manufacturer, then it would need to be measured and signed by a measurer in the usual way.

The completed rig/sail measurement form from a measurer, along with a completed boat measurement form, now allows the boat to be registered and issued with a certificate (called a "hull" certificate in the rules).

Almost the whole issue of sail identification marks has been removed from the class rules and placed into the Racing Rules of Sailing. This means that the sail numbers are no longer measured for the purpose of completing a sail marks measurement form, and so a boat can be registered and receive a certificate without having sail numbers. (Indeed, the boat can receive a certificate even if its sail numbers are a total mess.) It is now up to the owner to place sail numbers on his sails correctly. If, at an event, your numbers do not conform to the required measurements, you may be protested by the Race Committee, and the issue will be dealt with then and there by the usual Protest Committee procedures. I’m just guessing here, but this should lighten the burden of sail numbering for a skipper, since you are unlikely to be protested unless your numbers are genuinely unreadable. Small errors in positioning and size are unlikely to be penalised, and I understand that the sail numbering rules themselves have been eased a little as well.

The most important of the boat measurements have been moved into a new process of measurement called "Event measurement". The significant measures of boat weight, length, draft, keel and rudder weights, set of the sails against the rig limit marks, and so on, are now handled at an event. Like sail numbers, it is up to the owner to ensure that the boat meets the class rules when the boat is entered for an event. It is then up to the Race Committee to arrange for Event measurement, checking that the boats conform to these key measures at their event. These event measurements are not made at the time of Fundamental measurement, and, as mentioned earlier, the boat can be registered and issued a certificate without these event measurements being made.

The new arrangements reduce the work load of a measurer, especially if the sails come from a licensed manufacturer. Previously, the 172 questions for a full measurement of an IOM and its three rigs took me about 4 hours, and I didn’t want to do another one for quite some time! Now, this is reduced to around 46 questions, and I’m guessing that these can be done in around half an hour. The burden of responsibility on an individual measurer is thus eased somewhat, and shared out more evenly with other measurers at event and sail measurement, and with the owner. In my opinion, all of these new arrangements are very much to be welcomed.

I’ve heard some skippers say that these new arrangements will constitute a "Cheater’s Charter". I’m more optimistic. I think that the new arrangements will in fact reduce what little cheating there may be, either deliberate or inadvertent. In the past, a Race Committee has usually not seen fit to check the boats at an event, since the owner showed a certificate which said that all the key measurements had already been checked. In future, the certificate will say no such thing, and there will be a clear and pressing requirement for the RC to set up some sort of system for quickly checking the key parameters of most boats at an event. I’m confident that this will have the effect of reducing the temptation to cheat, rather than increasing it. It will certainly reduce the temptation to "forget" that replacing a 6-cell AA NiCd pack with a 5-cell Li-ion AAA pack could take the boat under the weight limit, for example.

There is, of course, no such thing as a free lunch, and these changes have costs as well as benefits. The major costs are that the Race Committee will have more work than they have become accustomed to, and skippers will have to take more responsibility for their boat and sail numbers. The benefits are that an IOM will be much easier to measure and register, the burden of sail numbering will ease for a skipper, and any cheating will be reduced.

Major rule changes

• A "deck datum point" has been introduced. Like a mast band, it defines a position on the hull, the "deck", from which rig measurements are taken. Within a reasonable tolerance, the owner can position the deck datum point wherever convenient. It avoids having the rules define the "deck", or the having the measurer decide where the "deck" is. The purpose of the deck datum point is to limit the variation in height of the rig, and the new rules prohibit the rig being lifted higher for light airs and lowered for heavy airs by more than 5mm in total.
• The mainsail must have either three battens, or three batten pockets. If it has batten pockets, there is no requirement that the pockets actually have battens, so battens are now optional if you have batten pockets. This avoids an argument about what is a "batten".
• There is no longer "any method of attachment of the sail to the mast is permitted". Instead, only bolt rope, eyes, jackstay attachments, and track slides are mentioned as permitted construction at the luff, and mast rings, jackstay, and jackstay attachments are mentioned as permitted mast fittings. This change is unlikely to cause any problems for existing boats, however.

Other new and changed rules

• Check stays are permitted only if no mast ram is used, but now regardless of how the mast is stepped. However, having check stays with a keel-stepped mast becomes effectively pointless because the check stay rigging point must be not more than 100mm away from the mast heel. The rules thus no longer bother with whether a mast is keel stepped or deck stepped.
• If the mainsail has a bolt rope or slides, it must be bent to the internal track of a mast; it cannot be bent to a mast that does not have a luff groove, for example. (The bolt rope is, after all, specifically excluded from the cross width measurements.)
• The prohibition on materials denser than lead now only applies to rudder and keel. Any metal is permitted in the hull. The point of using depleted Uranium, for example, is that it takes up less volume for its weight, but this is only significant for the appendages. Otherwise, it doesn’t really matter.
• The only metal permitted for spars remains aluminium alloy. The adjustment to the permitted aluminium content is in the form of now specifying which aluminium alloys are permitted.  Note that the list is different for masts and booms.
• Local cut-aways are now permitted in the mast. A number of skippers have been using out of class spars which had cut-aways, but these should now fall into class.
• The wind indicator is optional and, if used, is now explicitly excluded from any measurements.
• There is now a wall thickness permitted variation. The spars have always had to have a "constant" section, and this now defines what is meant by "constant".
• In anticipation of the formation of an IOM International Class Association, an ICA sticker could be required on the hull.
• Repair of a sail is now explicitly permitted, where previously any boat repairs required the repair to be checked by a measurer. Further, the appendages may be altered without the requirement for re-measurement, so long as they still conform to the rules. While the skipper now has increased responsibility to make sure his boat conforms to the rules, a repair to the hull or spars is still subject to check by a measurer.
• Eyelets are now explicitly restricted in number at head, tack, and clew.
• Draft stripes are now explicitly permitted, but are restricted in number, size, and materials.

Issues that could be misunderstood (I misunderstood ‘em!)

• Running a luffline through the mainsail luff tabling does not seem to be permitted at first sight, whereas it is explicitly permitted for the jibstay. However, the rules permit jackstay attachments at the luff, and in this case the luff tabling provides the permitted attachment of the mainsail to the luffline.
• It is not immediately clear that a mast head fitting could be used to define the upper mast band measurement point, since the fitting introduces a change in the mast section below the upper point. However, the Equipment Rules of Sailing define the mast as the "spar, its rigging, spreaders, fittings and any corrector weights." The head fitting is thus not part of the spar as such, and it is the spar which must have a constant section.
• Neither string nor elastic is permitted "standing rigging" material. But a piece of elastic or cotton as the topping lift restraint line, for example, is permitted, because this is "running rigging".

Other details

• The new rules are due to come into force on 1 March 2001, having been ratified by ISAF-RSD in January.  [Erm, it didn't work out that way!  The new rules finally came into force on 1 March 2002.]
• Ball-raced goosenecks are still permitted.
• There was little support for a restriction on the fin thickness, and so this proposal does not appear in the new rules.
• Any IOM that measures under the old rules and that has not been altered in any way will retain a valid certificate. If the boat is altered, however, it will need to be checked by a measurer, when it must conform either to the rules in force at the time of its initial (Fundamental) measurement, or to the new rules currently in force.
• A builder can be licensed under special circumstances to mass-produce hulls which do not fully comply with the hull rules. It is clear that the sort of non-compliance envisaged involves matters such as the internal hull construction being obscured by pigmented resin.

I’ve discussed the new rules with Graham Bantock, Chairman of the RSD Technical Committee, at some length. Henry Farley and Larry Robinson have also offered helpful comments, though Henry nevertheless remains in fundamental though cheerful disagreement with my opinions. Whatever errors remain in the article are, of course, entirely my responsibility. It reflects my own understanding, and does not represent any "official" view.

Clubs	Members	Boats
36	164	274

​Description

Election latest: Campaign focuses on veterans on Armed Forces Day - as PM hails 'dedication' of servicepeople

Party leaders will be on the election campaign trail on Armed Forces Day discussing defence and support for veterans. But the fallout is expected to continue from comments made by campaigners for Reform UK, as party leader Nigel Farage declined to apologise for their actions.

Saturday 29 June 2024 07:32, UK

• General Election 2024

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• Campaign to focus on support for veterans on Armed Forces Day
• Reform canvasser in PM racism row says he was 'a total fool'
• Politics at Jack and Sam's : The last weekend
• Live reporting by Faith Ridler

Election essentials

• Manifesto pledges: Conservatives | Greens | Labour | Lib Dems | Plaid | Reform | SNP
• Trackers:  Who's leading polls? | Is PM keeping promises?
• Campaign Heritage:  Memorable moments from elections gone by
• Follow Sky's politics podcasts:  Electoral Dysfunction | Politics At Jack And Sam's
• Read more:  Who is standing down? | Key seats to watch | What counts as voter ID? | Check if your constituency is changing | Guide to election lingo
• How to watch election on Sky News

Tom Tugendhat, the security minister, has criticised those "in Nigel Farage's company" who have "rather extraordinary and unpleasant views".

It comes as a Reform UK canvasser who used a racial slur against Rishi Sunak has called himself a "total fool" and said he has learned his lesson.

Footage from an undercover Channel 4 reporter showed Reform campaigner Andrew Parker using a discriminatory term about the prime minister, as well as saying the army should "just shoot" migrants crossing the Channel.

Police are now assessing the comments to establish if an offence has been committed, while Mr Sunak  said the insult directed at him "hurts and it makes me angry".

Asked about this, Mr Tugendhat said: "While there are many people who are voting for Reform UK in order to protest, this isn't simply a party of protest.

"And what he's drawing attention to is the reality that sadly too many people in Nigel Farage's company are people who have rather extraordinary and unpleasant views."

The minister went on to condemn this "hateful language".

He said: "The prime minister quite rightly spoke not just as prime minister about this hateful language, but as a father of two young girls who frankly should not have to put up with this horrific language being used against their father."

Mr Tugendhat added that, additionally, there is a "pattern" of antisemitism and misogyny.

Was this the day the wheels began to come off for Nigel Farage's Reform UK bandwagon? Quite possibly.

It was a day that began with terrible newspaper headlines and ended with a clash about racism in his party with a hostile TV audience.

It may be, of course, that this ugly racism row has come too late to slam the brakes on the Farage juggernaut threatening to crush the Tories.

That's because, firstly, it's estimated that one in four of us will cast a postal vote in this election and many voters will have returned theirs already.

Secondly, Mr Farage relishes controversy and revels in the role of the insurgent battling against the establishment and political convention.

But even by his standards of notoriety the day got off to a bad start, when The Daily Telegraph's front-page headline declared: "Farage is a Putin appeaser, says Sunak".

TV presenter Rylan Clark has said he would "love" to become a politician - and replace the party system with a "Power Rangers of government" model.

The TV personality, 35, joined political editor Beth Rigby and former Scottish Conservative leader Baroness Ruth Davidson for this week's Sky News Electoral Dysfunction podcast.

Asked if he would ever consider the career change, he said: "If I wasn't in the job that I was in, I would love nothing more."

Rylan, who won Celebrity Big Brother and also appeared on the X Factor, appeared on the podcast in place of Labour candidate Jess Phillips after tweeting his praise for Rigby on the day Rishi Sunak announced the general election.

Sharing a clip of her and Sky presenter Sophy Ridge outside a rainy Downing Street waiting for Mr Sunak to appear at the lectern, he said: "Obsessed with the Rigby."

Speaking to her and Davidson, he said his "obsession" with politics began with Brexit - "as we've seen so many promises which weren't fulfilled" since then.

He added: "I lie there at night sometimes, and I think about [Volodymyr] Zelenskyy. He hosted one of the same shows I've hosted in Ukraine."

The TV presenter also shared his idea of abandoning political parties altogether.

Read the full story here: 

Our live poll tracker collates the results of opinion surveys carried out by all the main polling organisations - and allows you to see how the political parties are performing in the run-up to the general election.

With under a week to go, the Tories and Labour have taken a drop, while support for Reform UK and the Liberal Democrats is on the rise.

Read more about the tracker  here .

By Faye Brown , political reporter

A Reform UK canvasser who used a racial slur against Rishi Sunak has called himself a "total fool" and said he has learned his lesson.

Police are now assessing the comments to establish if an offence has been committed, while Mr Sunak said the insult directed at him "hurts and it makes me angry".

Mr Parker, who was canvassing in Clacton, where Reform leader Nigel Farage is standing, told Sky News the sting operation had "proper taught me a lesson".

Party leaders will be on the election campaign trail on Armed Forces Day discussing defence and support for veterans.

Prime Minister Rishi Sunak will hail the "duty, dedication and selfless personal sacrifice" of servicemen and women and claim his is the only party to meet the Help for Heroes Veterans' Pledge.

The pledge requires parties to commit to keeping the Office for Veterans' Affairs, commissioning an independent review of the medical discharge process and ensuring veterans get the benefits and compensations they deserve.

Mr Sunak said: "It should be the first responsibility of any government to support those who defend us.

"It's why it's so important that we get defence spending to 2.5% of GDP by 2030, and also why we must continue our mission to make the UK the best country in the world to be a veteran."

Meanwhile, Labour leader Sir Keir Starmer will pledge to introduce a new armed forces commissioner and lead a "government of service" if Labour is elected.

The commissioner role will aim to champion those who serve by investigating issues such as substandard housing, faulty kit and poor discharge support, the party said.

Sir Keir said: "Labour is deeply proud of our armed forces personnel, veterans, and their families for the contribution they make to our country.

"Theirs is the ultimate public service - and their professionalism and bravery is rightly respected across the world."

And Liberal Democrat leader Sir Ed Davey has reiterated their manifesto pledge to reverse cuts to numbers in the armed forces and their "ambition" to increase defence spending to 2.5% of GDP.

Good morning!

Welcome back to the Politics Hub for the last Saturday of the general election campaign.

There is less than a week to go until polls open across the country for voters to select the next government on 4 July.

There's still plenty that could happen between now and next Thursday, however.

Here's what you need to know today:

Party leaders will be on the election campaign trail on Armed Forces Day discussing defence and support for veterans; 

Rishi Sunak will hail the "duty, dedication and selfless personal sacrifice" of servicemen and women and claim his is the only party to meet the Help for Heroes Veterans' Pledge;

Meanwhile, Labour leader Sir Keir Starmer will pledge to introduce a new armed forces commissioner and lead a "government of service" if Labour is elected;

And  Liberal Democrat leader Sir Ed Davey has reiterated their manifesto pledge to reverse cuts to numbers in the armed forces and their "ambition" to increase defence spending to 2.5% of GDP;

And fallout is expected to continue from comments made by campaigners for Reform UK , as party leader Nigel Farage declined to apologise for their actions;

Despite this, a Reform UK canvasser who used a racial slur against Mr Sunak has called himself a "total fool" and said he has learned his lesson.

We'll be discussing all of that and more with:

• Security minister Tom Tugendhat at 7.15am;
• John Healey , shadow defence secretary, at 8.15am.

Follow along for the very latest in the general election campaign.

Thank you for joining us in the Politics Hub for live coverage of today's events in the general election campaign.

Polls open in 5 days and 8 hours - and the politicians will be spending every last moment fighting for your vote.

Scroll down for all of today's developments - and join us from 6am for live coverage of the last weekend of the campaign.

Education Secretary Gillian Keegan has joked about needing a new job next week as she faces being one of the Tories' most high-profile election casualties.

The cabinet minister is projected to lose her Chichester seat in West Sussex to the Lib Dems, who are aiming to smash the so-called "blue wall" in southern England.

During a visit to a school in her constituency, Ms Keegan was asked by pupils what job she would do if she was not an MP.

"I might have to answer that question next Friday", she said.

Ms Keegan later told the PA news agency that the polls were "all over the place" and "I have never taken anything in my whole life for granted".

But her initial answer reflects the defeatist mood of some Tories as multiple polls suggest Britain's political landscape is about to be fundamentally re-drawn, with Labour  on course for a historic majority.

Ms Keegan is one of more than a dozen senior figures at risk of having a so-called "Portillo moment" - a reference to Michael Portillo, the Conservative minister who was famously unseated as Tony Blair swept to power in 1997.

Read more here:

We've got six days to go until the election - and today has been slightly quieter than some of the other days on the campaign trail.

Here's everything you need to know this evening:

• Rishi Sunak has said the reported use of the slur "P***" by a Reform UK campaigner to describe him "hurts" and makes him "angry";
• Labour leader Sir Keir Starmer described the comments as "racist" - but did not apply that label to Nigel Farage ;
• Although the Reform UK leader described the comments as "very prejudiced, very wrong", he claimed that the undercover reporting by Channel 4 was a "stitch up" - something the broadcaster completely rejects;
• The campaigner who made the comment, Andrew Parker, called himself a "total fool" and said he has learned his lesson;
• However, Essex Police said they are "urgently assessing" whether any offences were committed by Mr Parker and another canvasser who made homophobic comments.
• A new MRP poll  predicted the Tories will crash to just 85 seats - with Labour winning a whopping 470 seats and becoming the largest party in Scotland for the first time in over a decade;
• Data from the Electoral Commission  showed that the unions finally opened their chequebooks to Labour, giving nearly £2m in week three of the campaign (£3.3m in total) - while the Tories raised just £275,000;
• Junior doctors in Wales  have accepted a pay offer from the Welsh administration there;
• Rylan Clark revealed the changes he would make to the political system;
• Education Secretary Gillian Keegan admitted no poll was showing a good outcome for the Conservatives;
• And Conservative candidate and former defence secretary Sir Liam Fox  refused to rule out putting himself forward as caretaker Tory leader after the election if the Tories lose and Rishi Sunak resigns.

Follow along for the very latest from the campaign trail with less than a week until polling day.

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Certification Control Form

The class rules allow pigmentation of resins used in the moulding of hulls and the difficulty in examining the interior of many hulls, the declarations required on the Certification Control Form require the builder of the hull to declare that the materials used in the construction of the hull / boat are in compliance with the class rules. The simplest way to deal with the Declaration would be for the builder to include a pre-signed Certification Control form with the boat at delivery to the owner. Alternately if a completed boat is not being delivered to provide a declaration that to the best of his knowledge the components supplied meet the requirements of the class rules.

The Certification Control Form remains the only form required to be sent to and retained by a NCA as the result of a successful certification control. The method of storage is the NCA’s decision.

Click here to download the Certification Control form

Click here to download the Measurer’s Record form

IOM Certificate Template

Any skippers looking to obtain a IOM Certificate should in the first instance contact their World Council Member within their individual NCA’s to obtain a valid certificate for their boat.

This document is not published publicly.

Additional Rigs Form

Should the boat be certificated with less than the full complement of rigs then the Additional rigs Certification Control Form may be used to add additional rigs to a certificate. Once the certificate has been up dated then it need not be retained.

Click here to download the additional rigs measurement form

Check Lists

The two Check List forms are for the measurers use in conducting a certification control. They are not required to be sent to the NCA. As such, these check lists should be thought of as a work sheet of checks to be observed by the official measurer in a control only and if the boat complies with all the statements then there would be no further use for them. The check lists might be of some use to the owner of a boat which failed control as a record of what has to be corrected before a certificate is issued.

Click here to download the Hull & Appendages checklist

Click here to download the Rigs & Sails chec klist 

This is not part of the Certification Control Forms but is only given as a suggestion of a means of a measurer recording measurements he, or she has completed.

The term builder on the Certification Control Form is to be interpreted to mean the person who assembles the boat to sailing condition from its individual components.

The builder should then satisfy him, or herself, that the various components meet the current class rules.

Where there is any doubt as to the components compliance, the builder should ask his supplier to provide a declaration certifying the component being supplied complies with the current class rules.  This should be available to the Official Measurer at certification control.

In the case of a hull the moulder may wish to add a declaration for this purpose to his moulder’s tag.

Such a declaration should not be confused with the boat’s certificate resulting from control.