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Comet Od Uk
Designer: Andrew Simmons  ·  Builder: Comet Dinghies (Uk)  ·  First built: 1980
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About the Comet Od Uk

Designed by Andrew Simmons and launched in 1980, this compact dinghy represents a thoughtful approach to single-handed sailing and sailing instruction. Built by Comet Dinghies in the UK using fiberglass construction, the boat features an unstayed catboat rig that eliminates the complexity of stays and shrouds, making it particularly appealing for novice sailors and sailing programs. At just over 11 feet in length with a 4.5-foot beam, this dinghy offers remarkable stability for its size while remaining light enough at 110 pounds for easy launching and retrieval. The centerboard configuration provides flexibility in shallow waters while maintaining good upwind performance when fully deployed. The simple catboat rig with 70 square feet of sail area delivers respectable performance without overwhelming newer sailors. With a capsize screening formula of 3.76, the design prioritizes stability and safety, making it well-suited for sailing instruction, recreational day sailing, and protected coastal waters. The boat's forgiving handling characteristics and straightforward rigging make it an excellent choice for sailing schools, yacht clubs seeking trainer fleets, or individuals wanting an uncomplicated boat for recreational sailing in harbors, bays, and calm coastal areas.

Core Dimensions
LOA (Length Overall) 11.33 ft / 3.45 m
Beam 4.50 ft / 1.37 m
Max Draft 2.50 ft / 0.76 m
Min Draft 0.33 ft / 0.10 m
Displacement 110.00 lb / 50 kg
Sail Area (Reported) 70.00 ft² / 6.50 m²
Design & Construction
Hull Type Dbrd. Dinghy
Rigging Type Cat (unstayed)
Construction FG
Designer Andrew Simmons
Builder Comet Dinghies (UK)
First Built 1980
Associations Comet Class Association (UK)
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Performance Ratios
Displacement/Length Displacement to Length ratio measures how heavy a boat is relative to its waterline length. Lower values mean a lighter, faster boat.
Under 100 — Ultralight racer100–200 — Light cruiser/racer200–300 — Moderate cruiser300–400 — Heavy cruiserOver 400 — Very heavy
54.98
Comfort Ratio Ted Brewer's Comfort Ratio predicts how comfortable a boat will feel in offshore conditions. Higher values mean a steadier, more comfortable motion in a seaway.
Under 20 — Uncomfortably rough20–30 — Acceptable coastal30–40 — Good offshore comfortOver 40 — Very comfortable offshore
2.25
Hull Speed Hull Speed is the theoretical maximum speed of a displacement hull, calculated from waterline length. Most cruising sailboats reach this speed in moderate conditions. 4.16 kn
Pounds/Inch Immersion Pounds per Inch Immersion (PPI) tells you how much weight is needed to sink the boat one inch. Useful for calculating how additional gear and stores affect waterline. 0.93 pounds/inch
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