rc yacht sail numbers

DF95 - Sail Numbers - black

DragonFlite 95 - Self adhesive individual black sail numbers - you require 4 of each number for each set of sails. 

Both the DragonForce 65 and DragonFlite 95 yachts are recognised racing classes governed by “DF Racing”. They have their own set of restricted class rules that must be adhered to at official races. This is a product that is allowed under these class rules. More information on the class rules at – www.dfracing.world

• Condition : New
• Product Code : S550390

Welcome to Radio Control Sailing Australia

Radio Control Sailing

• Sail Numbers
• Register Your RC Laser
• Building Fleets
• RC Laser Class Rules
• Hull Numbers

Sail Numbering Explained

A full set of sails for the RC Laser comprises three rigs/sails. The A rig (often described as the ‘light airs’ or ‘drifter’ rig) is the largest and is most suited to light winds. The B or ‘standard’ rig will be used for the most common wind strengths. The C rig (sometimes referred to as the ‘storm’ rig) is reserved for very heavy weather sailing.

If you can only afford one additional sail then your choice should be determined by the wind conditions in which you expect to sail most. For example, if you sail mostly on an inland lake surrounded by trees you should go for the A rig. If, however, you will be sailing mostly on or near the sea you may prefer to make the C or ‘storm’ rig your additional sail.

Sail and hull numbering should follow the recommendations set out on diagram below.

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One thought on “Sail Numbers”

Can you please tell me what is the normal position for numbers on the D rig Do you still also need the AUS

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• General Parts

Sail Numbers

Display your sail number on your sail with adhesive-backed sail numbers. These insignia numbers are made from a sticky back dacron material and do not add any significant weight to the sail. We carry pre-cut style "Euro" numbers and the traditional 'Digital 8' style numbers, which can be cut to any specific number, in a variety of number heights and colors. For Laser sails, select the 12 inch numbers in either Digital 8 or Euro style. We also stock Hobie Cat specific numbers for boats like the Hobie 16, Hobie 17, and Hobie 17 plus Tasar class specific red numbers.

Digital 8 - These are universal numbers in the shape of the digit '8' from which you can cut any specific number you need. 

Pre Cut / Euro  - Unlike Digital 8 numbers, 'Euro' style or 'Pre Cut' numbers are cut to specific numbers or letters for a clean finish. These are preferred by many sailors as they have a higher quality look on the sail.

• Qty in Cart

Sail Number 12" Pre-Cut Euro

Sail Number 12" Digital

Sail Number 9" Pre-Cut Euro

Sail Number 9" Digital

Sail # Country Code Set (2ea) - 12in Euro - USA (Black)

Sail # Country Code Set (2ea) - 12in Euro - USA (Blue)

Sail # Country Code Set (2ea) - 12in Euro - USA (Red)

Sail # 10-Pack - 12in Digital 8's (Black)

Sail # 10-Pack - 12in Digital 8's (Blue)

Sail # 10-Pack - 12in Digital 8's (Red)

Sail # 10-Pack - 9in Digital 8's (Black)

Sail # 10-Pack - 9in Digital 8's (Blue)

Sail # 10-Pack - 9in Digital 8's (Red)

Tasar Sail Numbers

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Welcome aboard.

Replacing Sail Numbers: Steps, FAQs, Rules

Sometimes a previously used sail comes your way and you need to replace the sail numbers. If you have replacement numbers, you can do it yourself.

Step-by-step instructions

SailZing.com guest contributor Richard Beers, an E Scow and MC Scow sailor, shows how in this pdf document . Click on the link to read his step-by-step instructions.

Can I use acetone to remove the old adhesive?

Richard recommends denatured alcohol. Either acetone or denatured alcohol will work. Neither solvent will damage the sail. Denatured alcohol is less aggressive and won’t remove your pencil lines. Keep either solvent away from colored letters.

If the adhesive is hard to remove, soak a paper towel in the solvent and lay it on the adhesive for awhile.

Where can I get numbers?

Typically, you will get new numbers from your sail maker. Another source is SailRite .

Tell me more about number size and spacing

If you’re placing numbers from scratch, use the class rules for size and spacing (see below).

If the class rules do not specify spacing, use a proportional spacing. For example, for 15″ numbers, use a spacing of about 3″ between numbers. If the numbers “nest” together – like a 7 and 4, measure the 3″ at the closest point between the nested numbers; otherwise they will look too far apart.

How do I avoid wrinkles?

As Richard points out in his article, applying the numbers without wrinkles takes care. Even if the sail is flat, it’s easy to get wrinkles.

You might consider using different techniques for different numbers. See the diagram below.

• Open figures with flat bottoms: 1, 2, 7. Just start at the bottom of the number, peeling a little backing paper off, and following the shape while peeling adhesive off.
• Get the bottom of the figure aligned first. Then start at the bottom and peel a little backing off, working your way up vertically, pulling off the backing as you go.
• 4 and 9. If you really want to be careful, you can open up these numbers by making a slit in both the number and the backing. See the diagram.

Rules regarding sail numbers

Here are excerpts from the Scow, X, and Opti class rules regarding sail numbers.

• Sail numbers of contrasting color with lake designator shall be displayed on the mainsail at all times. 20” numbers and letters are required.
• Class A insignia shall be displayed on the mainsail at all times located in the top 1/3 of the mainsail at the 50% position.
• On both sides of her mainsail. On both sides of her after-deck.
• For mainsail, 18” min., 20” max. placed in accordance with the official sail-letter placement diagram and as follows: with vertical centerline 20” of the leading edge of batten No. 2, and with vertical spacing 12” between all club designator letters and/or racing numbers.
• On the after-deck, 10” in height, place approximately parallel to her rub-rail, facing outboard and in line.
• On sails, they shall be of widely solid contrasting colors, such as dark numbers on white or light colored sails, and white or light colored on dark material.
• Deck numbers shall be of widely contrasting color to the deck color for easy legibility.
• All letters and numbers shall be of a clear cut, vertical, block type design without serif.  The stroke shall be 2.5” min., 3.5” max.
• On sails, letters and numbers may be either marked directly on the sail material or may be of a separate material securely attached thereto.
• On the deck, letters may be either painted directly thereon or may be a plate or in individual letters securely affixed to the deck.
• Letters on sails, or numbers on sails, shall not be back to back nor at the same level above the boom except where letters or numbers are symmetrical and would show identically on both sides of the sail.

Class C and X

• Each yacht must carry on both sides of her mainsail a letter, representing the Member Club from which she is entered, as well as her correct assigned racing number. Any whole integer between 0-999 is allowed. The integer ‘0’ may be represented by ‘0’, ‘00’, or ‘000;’ no other integers shall include leading zeros. The letter and number shall be placed on the sails in accordance with the official sail-letters placement diagram. Sails which have more than one club designator letter shall show the designator letters closely side by side on the same plane. An emblem, letter, or number denoting the class to which the yacht belongs may be affixed, as provided in the Class Scantlings.
• Letters and numbers must be either all blue, red, green, pink, or black of a sans serif, non-italic, non-script font style attached directly to the sail by sewing and/or adhesive. All sails shall have letters and numbers of the same color with a minimum stroke width of 2.5″ and a maximum stroke width of 3.5″.
• Letters and numbers shall be on both sides of the sail and shall not be back to back except where letters and numbers show identically the same on both sides of the sail. Letters and numbers when not back to back shall be higher on the starboard side of the sail.
• Height of letters and numbers: Class C, 18-20″; Class X, 14-16″.
• Centerline of letters and numbers will be located aft the leading edge of the first lower batten as follows, plus or minus 2″: Class C, 36″; Class X, 8″.
• Vertical spacing between letters and numbers will be no less than: Class C, 10″; Class X, 8″.
• MC insignia: The official class insignia for the MC Scow shall be the letter “C” superimposed over the letter “M”. This symbol shall appear on all sails, in letters 15″ in height and of proportional width.
• Sail numbers: Each sail shall bear the number of the yacht in figures of the same proportion as the sail symbol.
• The MC insignia shall he located above the sail numbers. Both shall be located in or near the upper half of the sail.

Here’s a diagram showing the key rules for placement . The full set of rules is shown below:

• Height: 230 mm – 240 mm
• Width (except “1” or “I”): 150 mm – 160 mm
• Width for M and W: 160 mm – 170 mm
• Thickness: 30 mm – 40 mm
• Space between adjoining numbers or letters: 40 mm-50 mm
• Space between rows of numbers or letters: 40 mm – 50 mm
• Space between the national letter groups on opposite sides of the sail: 100 mm -150 mm
• Distance between the luff and the closest letter or number in each row: 150 mm
• Distance between lower edge of uppermost batten pocket and the national letter which is closest to the leech: 40 mm – 50 mm
• Distance between number closest to the leech and the leech: as per RRS Appendix G1.2(b)

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International One Meter RC Sailboat: Your Guide to Sailing and Racing in Style

• By - Kyle Hilson
• Posted on November 14, 2023 November 14, 2023
• Posted in RC Boats

Remote-controlled sailboats have become an increasingly popular hobby among water enthusiasts of all ages and skill levels. Among the many types of remote-controlled sailboats available on the market today, the International One Meter RC Sailboat stands out for its distinct design and international racing scene. Measuring exactly one meter in length, these sleek and elegant sailboats are built to compete in races around the world. In this article, we will explore the world of International One Meter RC Sailboats, from their specifications and materials to the competitive racing scene and maintenance requirements. Whether you’re a seasoned sailor or a beginner interested in trying your hand at remote-controlled sailboat racing, learning about the International One Meter RC Sailboat is sure to intrigue and inspire you. So, let’s dive in!

What is an International One Meter RC Sailboat?

An International One Meter RC Sailboat is a remote-controlled sailboat that is one meter long and built to strict guidelines for racing. Here are some of the key specifications and features of these sailboats:

• The hull length must be exactly one meter, with a maximum beam of 200 mm.
• The minimum weight of the boat is 4 kg, including all batteries and any removable ballast .
• Sail area is limited to 5250 square millimeters, with a maximum mast height of 1.75 meters and maximum boom length of 1 meter.
• The sail must be made from a non-stretch material, with no more than one self-tacking jib and one mainsail allowed.
• Common materials used for construction include fiberglass , carbon fiber , and Kevlar .

If you’re interested in purchasing your own International One Meter RC Sailboat , you can find a variety of models available online or through specialty hobby retailers. Some popular models include:

What size sailboat is best for solo sailing?

When it comes to solo sailing, the recommended sailboat size usually ranges from 20-30 feet, with 25 feet being the most common. A smaller sailboat allows for ease of handling, maneuverability, and control. However, it is essential to consider your skills and experience when selecting the boat’s size to ensure your safety.

There are various sailboat models and sizes to choose from, and boating enthusiasts can check out websites such as Sailmagazine, Yachtingworld, and Sailrite for additional information on sailboat sizes and types.

Sailing an International One Meter RC Sailboat

Sailing an International One Meter RC Sailboat requires skill and precision to maneuver the boat through the water. Here are some key things to keep in mind:

• The wind direction and speed will greatly affect the boat’s performance, so it’s important to adjust the sails accordingly.
• Racing rules dictate that boats must stay “clear astern, clear ahead, or overlapped” when tacking or jibing, to avoid collisions.
• In gusty winds, it’s crucial to keep the boat balanced to prevent capsizing .
• Some sailboats may have adjustable ballast , which can be used to improve performance in certain conditions.

Interesting facts about International One Meter RC Sailboats:

What skills do you need to sail a boat?

Sailing a boat requires several skills, including:

• Navigation: The ability to read charts, use a compass, and understand tide and wind patterns.
• Maneuvering: Knowing how to steer the boat, adjust sails, and handle ropes and lines.
• Maintenance: Understanding the basics of boat maintenance and repair is essential.
• Safety: Knowing how to keep yourself and others safe on the boat, including wearing the appropriate safety gear and being prepared for emergencies.

If you’re looking to improve your sailing skills, there are courses and certifications you can take through organizations such as the American Sailing Association or the Royal Yachting Association. Additionally, websites like Sailing World or Sail Magazine offer helpful articles and resources for sailors of all levels.

Racing an International One Meter RC Sailboat

The International One Meter RC Sailboat class has a vibrant racing scene , with events held around the world. Here are some things to know about racing these sailboats:

• Starting procedure: Races typically begin with boats lining up behind a start line, with timed signals to indicate the start of the race.
• Race course: Courses are usually marked by buoys or other markers, and may involve multiple laps or other variations.
• Windward/Leeward: One common racing format involves sailing upwind and downwind legs to reach a mark, making a turn, and then sailing back to the start.
• Strategy: Skill in reading wind patterns, adjusting the boat’s balance and sail trim, and avoiding collisions with other boats are all important in racing an International One Meter RC Sailboat.

If you’re interested in taking your International One Meter RC Sailboat to the next level and competing in races, there are a number of resources available:

• The International One Meter Class Association maintains a website with information on class rules, race results, and upcoming events.
• Local and regional sailing clubs may have regular International One Meter RC Sailboat races or events.
• Online forums and communities can provide advice and support for those interested in racing International One Meter RC Sailboats.

What is the most popular RC sailboat class?

The most popular RC sailboat class is the International One Meter (IOM). It is a strict one-design class that is easy to sail and has a large international following. IOM sailboats are typically between 1 and 1.07 meters in length and weigh around 4.5 kilograms. There are several websites and forums dedicated to the IOM class, including the International Radio Sailing Association (IRSA) and the United States Radio Sailing Association (USRSA). Numerous IOM models are available from various manufacturers, including Joysway, Dragon Sailing, and Radio Sailing Shop.

Maintenance of an International One Meter RC Sailboat

Keeping your International One Meter RC Sailboat in good condition is important for both performance and longevity. Here are some tips for maintenance:

• Hull care: Regularly clean the hull with soap and water to remove dirt and debris. For tougher stains, use a specialized cleaner formulated for fiberglass or carbon fiber .
• Sail care: Store sails rolled up rather than folded to prevent creases and damage. Check for any tears or fraying regularly and mend as necessary.
• Battery care: Recharge the battery after each use, and store it in a cool, dry place when not in use to prolong its lifespan.
• Rigging: Check the rigging, including lines and booms, for any signs of wear or damage, and replace them as necessary.

Common issues that may arise with an International One Meter RC Sailboat include:

• Rudder issues: If the rudder is not responding properly, it may need to be adjusted or replaced.
• Sail malfunctions: Sails may become tangled or not deploy properly. Inspect your sail before each use and make sure it is in good condition.
• Electronic issues: If your remote control is not operating properly, there may be an issue with the frequency or battery voltage, or the receiver may need to be replaced.

If you need assistance with maintenance or repair, there are several resources to consider:

• Local hobby shops may offer repair services or carry parts and supplies.
• Online retailers selling International One Meter RC Sailboats may offer advice, tutorials or support in regards to maintenance and repair
• The International One Meter Class Association website also provides resources and advice for maintaining your sailboat.

How do you maintain a sailboat?

Maintaining a sailboat can be a simple but essential process to ensure its longevity and safety. Here are some tips on how to maintain a sailboat:

• Wash the sailboat regularly with mild soap and water, paying particular attention to the hull, deck, and rigging.
• Inspect the rigging and sails for any signs of wear and tear, and replace damaged parts as needed.
• Check the engine, oil, and fuel filters regularly, and change them according to the manufacturer’s recommendations.
• Inspect the batteries and wiring for any damage, and make sure they are properly charged and maintained.
• Keep the sailboat covered when it is not in use to protect it from the sun, wind, and rain.

There are several websites and products that can assist with sailboat maintenance, including:

Where to Buy an International One Meter RC Sailboat

If you are interested in purchasing an International One Meter RC Sailboat , there are several options to consider:

• Specialty hobby shops: Look for stores that specialize in remote control sailboats or racing boats for the best selection.
• Online retailers: There are several online retailers that sell International One Meter RC Sailboats, often with a wider selection and the added convenience of home delivery. Popular online retailers include Amazon, eBay and Aliexpress .
• Manufacturer websites: Some manufacturers will sell their International One Meter RC Sailboats directly to the consumer on their website. This can be a good option for those who want a unique or customized sailboat.

When purchasing an International One Meter RC Sailboat, it’s important to do your research and buy from a reputable source. Look for reviews of the retailer or manufacturer before making your purchase.

It’s also worth considering the cost of additional supplies or accessories you may need, such as batteries, chargers, and radio equipment. Some International One Meter RC Sailboat retailers offer packages that include everything you need to get started.

Here are some popular International One Meter RC Sailboat models to consider:

Where to buy a cheap sailing boat?

If you’re looking for a cheap sailing boat, there are a few options to consider:

• Online marketplaces such as eBay, Craigslist, and Facebook Marketplace often have listings for used boats at lower prices. However, it’s important to thoroughly research the seller and inspect the boat before making a purchase.
• Boat auctions can also be a good way to find a cheap sailing boat. Websites like Boat Auctions Direct and GovDeals.com offer listings of upcoming boat auctions across the United States.
• Boat rental companies may sell their older boats at a discounted price. Contacts with companies operating in your area may turn out to be a good idea.

Remember that a lower price may mean that the boat needs repairs or maintenance before it’s seaworthy. Always factor in the cost of any necessary repairs before making a purchase.

Sailing an International One Meter RC sailboat is a great hobby that provides stress relief, social interaction, and the satisfaction of building and sailing a toy boat. Whether you are an experienced sailor or a beginner, an International One Meter RC sailboat gives you the opportunity to sail in diverse waters and compete in international races.

With so many brands and models available, it can be difficult to choose the right one. Keep in mind the specifications, materials, and racing rules when purchasing an International One Meter RC sailboat. Whether you decide to buy from a specialty shop, online retailer, or manufacturer website, always choose a reputable source and do your research beforehand.

Once you have your sailboat, take care of it and use it as a tool to learn and improve your sailing skills. Participating in races or joining a club can be a good way to meet new people and learn from experienced sailors.

Overall, an International One Meter RC sailboat is an exciting and fulfilling hobby that can provide a lifetime of enjoyment. Don’t wait any longer and start exploring the waters with your own International One Meter RC sailboat today!

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• Vanquish 65
• Mini Maniac
• RG65 Appendages
• Maniac MK II
• IOM Appendages
• Marblehead Class
• Marblehead Appendages
• RT65 Ragnarok
• RT65R Armageddon
• RC65 Adrenaline
• ST65 Sowelu
• Mini40 / F48 Class
• Nightmare X
• Nightmare MK VIII
• MultiOne Class
• FireDragon 1000
• DIY Sail Winch
• Rig Building

Click the picture to get to the boat's page Sailboats Sailboats use the power of the wind acting on sails to propel the boat. Model sailboats are typically controlled via a multi-channel radio transmitter in the hands of the operator with a corresponding receiver in the boat. By changing the position of the two joysticks on the transmitter signals are sent over two separate channels on a single radio frequency (assigned to the individual boat/operator). On the boat, the radio receiver is connected to two battery powered electric motors or servos. Signals from the radio transmitter are interpreted by the radio receiver and translated into instructions to change the position of the servos. One servo controls the position of both main and jib sails together (allowing the sails to be trimmed), the other the position of the rudder (allowing the boat to be steered).

Sailing Monohulls Model sail boats are governed by the same ISAF (International Sailing Federation) Racing Rules of Sailing that are used for full sized crewed sailing boats (with the inclusion of Appendix E, that introduces special rules to govern the radio-controlled sport). There are four international classes of radio sailing boats recognized by the ISAF-Radio Sailing Division and several other international monohull classes: (from smallest to largest). - International RG65 RG65 are monohulls with maximum lenght of 650mm, three different rigs allowed with a maximum sail area 2250 cm² - International One Metre (IOM) The IOM class rules specify a monohull of maximum length 1000 mm, with maximum draught 420 mm. There is a minimum weight of 4000 g, which makes homebuilding of competitive boats possible. The IOM has three one-design rigs. To keep costs down, hull materials are restricted to either wood or glassfiber, while masts and booms are restricted to either aluminium or wood. - International Marblehead (M) Maximum length: 1290 mm. Maximum draught: ca 700 mm. Up to six rigs are allowed, the tallest being about 2200 mm. - International Ten Rater (10R) - International A Class (A), the largest of the international radio sailing classes.

Sailing Multihulls There are several multihull classes, one of the most popular multihull classes is the Mini40 class or F48 with 48inch maximum lenght and 48 inch maximum beam . Other classes are the 2m class, the new MultiOne 1metre class and the very new 65M multihull class . The 65M is a very exciting class with well sailing, small and easy to transport multihulls. Multihull classes from smallest to largest: - 65M Class In 2008 some multihullers on various bulletin boards discussed building RG65 sized multihulls. The 65M class evolved with no other rules than overall lenght not exceeding 650mm. First designs came up in 2009 by Siri, who let Ernst Zemann a multihull designer draw two different hulls and Dick Lemke who started a Trimaran and a Catamaran. Several new designs followed. The 65Ms sail well, are easy to be transported and inexpensive compared to larger multihulls. - 65M Class The class homepage is here , new boats can be registered here , selfbuilding plans can be downloaded on this site for free. - MultiOne Class Multihulls with 1m length, unfortunately the class Homepage is not accessible any more. - Mini40 Class Popular multihull class with boats not exceeding 1220mm in length and a maximum beam of 1220mm. - 2m Class Multihull class with boats not exceeding 2 metres in length with a maximum beam of 2 meters and a maximum mast height of 2,8 meters. There are no restrictions on sail area.

Radio controlled racing boats are designed for maximum speed and maneuverability. Various syles of racing include circuits of different shapes laid out on the water with buoys. The most common courses are the 1/6th mile oval that consists of 330' straight sections followed by 70' diameter turns. The International Model Power Boat Association (IMPBA) as well as the North American Model Boat Association (NAMBA) have specific rules and regulations to address the course, race rules, and formats. In addition to oval racing there are straight a way (SAW) racing. This is a contest to see how fast you can make the boat go in a straight line. Timed events are held where the boats need to go through a starting light and an ending light. The speed is calculated by the timed difference from start to stop vs the length between the lights. Again IMPBA and NAMBA rules apply. Some enthusiasts race in the sea controlling their craft from a pursuing boat known as a "chase boat". These courses will usually be a few miles long and the competition is judged against the clock to find the fastest in class. Within the various styles of racing there will be a number of classes depending upon engine size and type.

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Changing Sails

• November 1, 2009

Those of you that have purchased and sailed the new A rig know one thing for certain – it is not very forgiving when the wind starts to get to its upper range of 8-10 knots.

The A rig was designed to power the RC Laser to new levels of performance in very light winds – and that it does. However, just like the B sail, when the A rig gets near the upper end of its wind range, it develops a pronounced weather helm (drives the boat into the wind – sometimes overpowering the rudder), and submarining downwind becomes common.

To windward, the answer to this problem is boat speed. It is critical to keep boat speed up so that the rudder has maximum effect. This is done by making quick, complete tacks, and slacking the sail slightly after a tack to bring the boat up to maximum speed again. Only then can you afford to trim for windward sailing.

Now, don’t get me wrong, you are not falling off to a beam reach, just a slight slacking of the sail after tacking and pointing a few degrees lower than you would expect to make good to windward, and you will regain your boat speed. By the way, this is the same method used with any sail when tacking to get your boat back to speed. Remember that the cat rig needs to sail fast through the wind in order to develop its maximum pointing angle. Just remember boat speed, boat speed, boat speed – the faster you go, the higher you can point.

So you screw up and get in irons – now what? There is only one way out – and the maneuver is even more pronounced with the A rig. Hold the rudder full over, and keep it there. Don’t worry about which way you have turned the rudder, just pick a hard over position and hold it. The boat will start to back out of irons. At the same time slack the sail all the way out.

As the boat turns backwards, the sail will be flapping out to the beam. For the A rig, it takes a full beam reach (perpendicular to the wind direction) to regain control. So when your boat is beam to the wind, SLOWLY trim in the sail. SLOWLY!!! The boat will start to move forward, and soon you will have developed rudder control once again. As speed increases, trim the sail more until you are back sailing at speed to windward.

If you trim the sail too quickly, the sail just drives the boat right back into the wind because you have no rudder action to stop it. Then you get to start all over again.

Finally, and the ultimate determining factor of going to a smaller sail is your downwind performance. Most sails can be feathered to windward, but there is practically no way out when you turn downwind.

First of all, when the bow starts to dive, you need to steer back and forth rapidly. The change of angle of the bow, allows the lee bow to lift the bow and keep it afloat. If the wind is steady, this technique can keep you going, and the added speed developed will do even more to keep your bow up. However, when it is gusting, the approaching gust will often bury your bow before you can get your boat up to speed. Again, it is speed – a fast boat has more lift in the bow.

To recap, just about everything discussed here has to do with boat speed. To windward, keep the boat moving at all costs. Tack fast, slack momentarily, regain speed and then trim for weather sailing. If you get caught in irons, rudder hard over and hold, sail all the way out. When on a beam reach, trim the sail very slightly to get the boat moving, and regain steering control. Downwind, wiggle the bow to help with lift. When rolling out, or diving, is all you do, change down in sail size. And smile – it could be worse, you could be aboard the real thing!

This article was written by Steve Lang of  SailRC.com .

The Angle Of The Dangle

Tuning tips for the rc laser.

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Sail Numbers

Sail Numbers Quick Facts

• Australian Sailing is the issuing authority for sail numbers for yachts.
• Only members of affiliated clubs are able to purchase an exclusive licence to use a unique sail number.
• Clubs cannot issue sail numbers unless they have a registered prefix.

About Sail Numbers

Sail numbers are an important way of uniquely identifying a yacht for a variety of purposes.

They are a requirement for racing, and could be critical in a search and rescue situation. 

You can apply for a sail number to be issued for your yacht via the application form below.

Allocations are split in to four categories:

Next available number = $220 Transfer (for use when a sale of a yacht has taken place) = $110 Requested number (subject to availability) = $440 AUS/SYD Prefix (eg: SYD100) = $2,200

Please note that the issuance of a sail number does not include any physical sail numbers to apply to the sails. These should be purchased from a sailmaker.

Ownership Ownership of the sail number always remains with Australian Sailing. The Licensee does not acquire ownership or any other intellectual property rights by virtue of the Licence Agreement. Sail numbers are entered into the Australian Sailing database and this is linked to the Licensee's membership record.

Transfer of Licence A sail number may be transferred only after the Licensee advises Australian Sailing of their wish to terminate the licence and provides contact details of the new proposed Licensee. The new proposed Licensee has to apply online for a sail number transfer and pay the related fee to be granted the sail number license.

Sale of a Yacht Should the Licensee sell their yacht the Licensee must notify Australian Sailing in writing immediately, stating as to whether they wish to retain the sail number for a new yacht, or if it is to be transferred to the new owner. If no communication is sent to Australian Sailing the sail number will remain with the registered number Licensee.

If new boat owners (boat buyers) want to become Licensees of the sail number displayed on the yacht, they must include in the notification of sale, that the Licensee (boat seller) agrees on them taking the number over.

This is imperative for the sail number database to be kept up to date.

Breaching this Agreement Any individual found in breach of this policy will be subject to disciplinary action. Action may include termination of any Licence Agreement and the removal of the sail number from the register, making it available for re-issue.

Application Form All applications for a Licence shall be submitted online using the form below. The form shall be accompanied by the appropriate fee and the license agreement check box must be selected.

How to apply Please complete the application form below. Payment in full is required with your application.

For further information on sail numbers please email [email protected]

Sail Number Application Form

Sail Number List

Sail Number Prefix List

My Cruiser Life Magazine

What are Those Numbers on Sails? More #BoatLife Knowledge

Have you ever noticed how most sailboats have numbers on their sails? It’s one of those small details that you might not think much about.

But depending on what sort of boat you run, those numbers might carry a lot of meaning. Pretty much every boat has sail numbering, but they mean different things to different sailors.

Here’s a look at what those numbers mean and how to choose and install them if you’re ready to be noticed on the water.

Table of Contents

What are sail numbers and what do they mean, factory numbers, one-design or class numbers (like international laser class association), racing yachts and sail number racing rules, cruising boats – owner’s choice, how to pick your numbers, how to apply sailboat numbers, sail numbers and numbers of sails, faqs – questions about sail numbering.

First off, the purpose of sailboat numbers is solely to make your boat easily identifiable from a long way away. In many instances, a group of sailboats looks indistinguishable from one another from shore. Numbers are usually shown on the mainsail, but many racing boats have them installed on every sail they have.

One thing that sail numbering is not is an official registration or documentation number. There are some cases when the number is unique and traceable, but not by any legal state authority.

In most cases, the cruising sailor will say, “so what?” But if you think about it, sail numbers can help another boat identify you and call you on the radio. For example, instead of calling the “White hulled sailboat off of Cape Henry,” a ship could call “Sailboat number 99 near Cape Henry.” That’s a lot more specific and a lot more likely to get your attention. Sail numbers are very easy to read through binoculars, after all.

In contrast, racing sailors are often identified by their numbers. In a racing class, where every boat is identical, the only distinguishing attribute on the entire boat is the number on the sails.

The same is true in the offshore racing world. Many offshore racers have unique numbers assigned by the racing governance boards in their home countries.

Four Types of Sailboat Numbers

So let’s take a closer look at the various types of numbers that might be displayed on a boat’s sails.

This one is for most cruising boats. When the boat is delivered from the factory, they install sails made by their sailmaker. These will always include the boat maker’s logo and some identifying number. Usually, this is a sequential hull number.

For example, my boat displays the distinctive CR38, indicating that it is a Cabo Rico 38. The number 99 refers to the boat’s hull number off of the factory line. Therefore, it is the 99th Cabo Rico 38 that the company made.

This system is entirely random, of course. A builder might choose a different scheme to use or put no numbers on the sails at all.

On another note, sails don’t last forever. Most sailors have to buy new sails every decade or so, and in doing so, no rule says they need to stick with the same numbering scheme the manufacturer did.

For class racing, the numbers are significant because they are often the only way to tell the boats apart while they’re on the water. The whole idea of class racing is that the boats are identical, and only the sailor’s skills win the race.

Each class association issues numbers and class rules dictate precisely how and where the number is displayed.. For example, the International Optimtimis Dinghy Association (IODA) issues numbers for several small classes.

If larger boats are raced offshore in big competitions, it is usually registered with their home country’s national authority. Here in the US, that’s US Sailing. National letters or a country code will usually precede the unique sail number .

US Sailing works with regional associations around the country to ensure that sail numbers are not duplicated. But, of course, there are also large parts of the country that a regional club doesn’t cover, and in those cases, numbers are issued directly from US Sailing.

These US numbers are five digits long. The last four digits are divided up among the regional clubs. So, for example, USA 03000 would be assigned to someone from the Chesapeake Bay Yacht Racing Association .

What if the boat isn’t raced in any official events? As described above, maybe the factory installed the hull number or some other digits of significance. But if those sails are shot and it’s time for new ones, what should the skipper do?

They could choose to do nothing. If sail numbers aren’t crucial in what you do—and they aren’t for most liveaboard and traveling sailors—then you could simply not install any.

Or, you could mimic what the factory did. For example, the company insignia and number on the sail might be meaningful to you, like the maker’s badge on the hood of your car. In that case, you can have it recreated by the sail loft when they build your sails.

Or, you could do something completely original and meaningful to you and your crew. Sail lofts are using modern materials and dyes now that can make sails with printed patterns and graphics.

Many cruising sailors have designed their own logos for use on their sails. One famous example is SV Delos, whose sails feature their YouTube channel’s brand graphics and look great in their videos.

So if you have a cruising boat and need to pick some numbers, how do you figure out what to choose? If you’re buying a new sail, the sail maker can usually help you decide.

But the choice is entirely up to you. You could pick numbers of personal significance, like your birthday or anniversary. You could pick numbers about your boat, like the date you purchased her, her make and model dimensions, or the hull number.

If you don’t know your boat’s hull number, it is usually found in the middle of the HIN, which is the boat’s official hull identification number . The HIN is molded into the boat’s transom and included on all official paperwork. If your boat is registered or documented, the HIN is on the paperwork.

The first few digits of the HIN correspond to the country of origin and the manufacturer. In the middle, there should be a model code or serial number. Finally, the last four digits of the HIN are the date that the boat’s keel was laid by the factory.

If you ever want to apply your own sail numbers, it’s not hard to do. For the most part, they are made with self-adhesive lettering protected by backing paper. The biggest considerations are to ensure that the adhesive is strong enough and that material is pliable enough to be folded with the sail.

You can purchase lettering and logo material from most sail lofts or chandleries. You can also purchase pre-made block letters and numbers specifically intended for sails.

When putting the numbers on the sail, ensure that they are spaced perfectly. You’ll also want to think about how the sail will look when backlit by the sun. You can see the numbers on opposite sides, so you don’t want to let them overlap. Doing so would make both sets illegible on both the port side and starboard side.

Stingy Sailor has a great how-to on making and applying sail numbers .

Finally, we should note one final source of possible confusion. On racing sailboats, different sails are often referred to by different numbers! This isn’t an identification number specific to the boat, like the numbers discussed above.

Instead, this is a style of sail. Sails are numbered based on the wind conditions that they’re best for. Quantum Sails has a good write-up about the different shapes of jib sail and the numbers that correspond to them.

Many cruising sails may be familiar with the Code 0 (zero) sail, suitable for light air. This is an example of this numbering system used on racing boats.

What does sail number mean?

Sail numbers mean different things on different boats. They are simply a way to identify a particular boat from a distance.

On racing boats, the numbers help spectators tell who’s winning—and who’s not. On cruising boats, the numbers are often random and chosen by the boat manufacturer or owner.

How do I identify my sailboat?

Boat’s are commonly identified by a HIN, or hull identification number. This number isn’t found on the sails but rather molded into the boat’s fiberglass hull. It’s usually located somewhere on the transom.

The HIN works just like the VIN (vehicle identification number) in a car. It is unique to that boat and used on all official paperwork, like the registration. You can decode the HIN to find the manufacturer, serial number, and date of manufacture.

What is a number 4 sail?

On racing boats, different-sized headsails are given different numbers. For example, a number 4 jib is a small heavy air sail used in windy conditions.

Racers are always looking for an advantage, so like a golfer might choose a different club for a long drive, a skipper might call for a different sail combination to better match the wind speed and angle.

Matt has been boating around Florida for over 25 years in everything from small powerboats to large cruising catamarans. He currently lives aboard a 38-foot Cabo Rico sailboat with his wife Lucy and adventure dog Chelsea. Together, they cruise between winters in The Bahamas and summers in the Chesapeake Bay.