Byte Cii.

Description

The Byte CII is an advanced version of the original Byte dinghy, a single-handed one-design racing sailboat designed by Ian Bruce in 1988 and updated in 2004 by Performance Sailcraft Australasia (PSA). Tailored for lighter sailors (optimum weight 100-145 lbs. / 45-66 kg), it’s a high-performance, World Sailing-recognized class used in the Girls’ One-Person Dinghy event at the Youth Sailing World Championships (alongside the Laser Radial). The CII enhances the original Byte with a larger sail (73 sq ft vs. 58 sq ft), a 2:1 halyard system, and carbon-fiber mast/boom extensions for better control, making it ideal for competitive juniors, women, or small adults on lakes, rivers, or protected coastal waters. Its hard-chine fiberglass hull ensures responsive planning and forgiving handling, bridging the gap between the Optimist (for younger sailors) and the more demanding Laser. Over 2,000 Bytes (including CIIs) have been built, with active fleets in North America, Europe, Asia, and Australia, supported by the International Byte Class Association (IBCA). As of October 2025, it’s produced by PSA and dealers like Hartley Boats (UK), praised for its affordability, quick setup, and vibrant regatta scene.

Construction Details

Designer Ian Bruce
Builder Performance Sailcraft Australasia
Length 12.000 ft
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The standard boat dimensions

i -
j -
p 19.17 ft
e 7.50 ft
p2 -
e2 -
i2 -
j2 -

Documents

Sails

Sail Type MAINSAIL
Luff * 19.17 ft - (5843 mm)
Foot * 7.5 ft - (2286 mm)
Leech * 20.2 ft - (6157 mm)
Tack Angle * 88 °
Diagonal * 20.34 ft - (6200 mm)
Head (inches) 0.5 in - (13 mm)
Area * 71.844 ft²
Comments The sleeve along the luff is zippered. That sleeve measures 5/25" when folded at the head and 6.375 at the tack. The foot is loose.

Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.