How are sails measured?

How do you measure a jib?

While you have your tape at the top take the time to also measure the maximum luff length by measuring to the attachment on your furler or on the deck (hank on sails). The J measurement is done by measuring from the base of the mast to the attachment of your fore stay.

What is a Code 0 sail?

A code zero is strictly a downwind sail.

A code zero is often classified as a spinnaker in terms of racing, hence the restriction on the length of the mid-girth, but it’s not a true downwind sail. If you’re going downwind, you’ll use either a symmetrical or asymmetrical spinnaker.

How is boom length measured?

Boom lengths are taken from the mast front to the leech edge at the upper eyelet at the clew. The tape measure end is hooked on the sail edge just above the eyelet, letting it settle against the eyelet and outhaul line.

What is a number 3 jib?

The LP, mid-girth and luff length are designed around the rig geometry. … The luff curve is designed to match moderate headstay sag. #3 Jib. A non-overlapping headsail for heavy air use on boats that also carry genoas.

Are sail numbers required?

Sail numbers are generally assigned in consecutive order. They are assigned by either the builder, class association (for inland competitive racing), or national authority (required for offshore racing yachts). It isn’t mandatory to register an official number. If you don’t compete you may assign your own number.

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How do I find my GBR sail number?

To apply for a Sail Number for your windsurfer please contact technical@rya.org.uk or phone 023 8060 4200 and have your RYA membership number available.

How do I find my sail number?

Your sail number should be your hull number. With the older boats, the hull number is on the inside of the hull on the starboard side.

How is SA DISP calculated?

To then find the boat’s SA/D ratio, just divide its sail-area in square feet (SA) by its displacement in cubic feet taken to the two-thirds power (SA/D ratio = SA ÷ DCF↑.