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Comet 910
Designer: Van De Stadt/Finot  ·  Builder: Comar Yachts (Ita)  ·  First built: 1971
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About the Comet 910

Built by Italian manufacturer Comar Yachts from 1971 to 1987, the Comet 910 represents a collaboration between renowned naval architects Van De Stadt and Finot, resulting in a well-balanced 30-footer that found favor among European sailors. With 491 hulls produced over its 16-year production run, this masthead sloop established itself as a capable coastal cruiser and club racer. The design showcases classic early-1970s proportions with a moderate beam of 10.04 feet and substantial displacement of 8,200 pounds, creating a seakindly motion that appeals to cruising sailors. The fin keel with rudder on skeg configuration provides good directional stability while maintaining reasonable performance under sail. Her fiberglass construction has proven durable, with many examples still actively sailing European waters today. At 29.86 feet overall with a 22-foot waterline, the Comet 910 offers a practical size for coastal exploration and weekend cruising. The sail area of 395 square feet provides adequate power for her displacement, while the hull speed of 6.29 knots reflects her cruising-oriented nature. The low comfort ratio of 24.1 and capsize screening value of 1.99 indicate good stability characteristics, making this design suitable for experienced sailors venturing into offshore conditions while remaining manageable for coastal sailing.

Core Dimensions
LOA (Length Overall) 29.86 ft / 9.10 m
LWL (Waterline Length) 22.00 ft / 6.71 m
Beam 10.04 ft / 3.06 m
Max Draft 5.60 ft / 1.71 m
Displacement 8,200.00 lb / 3,719 kg
Sail Area (Reported) 395.00 ft² / 36.70 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Van De Stadt/Finot
Builder Comar Yachts (ITA)
First Built 1971
Last Built 1987
Number Built 491
Owner Reviews

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Performance Ratios
SA/Displacement Sail Area to Displacement ratio measures how much sail power a boat has relative to its weight. Higher values mean more performance and speed.
Under 14 — Heavy cruiser, slow14–18 — Cruising sailboat18–22 — Cruiser/racerOver 22 — Performance racer
 15.59
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
 343.79
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
 24.1
Capsize Screening Formula The USHS Capsize Screening Formula estimates offshore capsize risk. Lower is safer — values under 2.0 are considered acceptable for offshore sailing.
Under 2.0 — Safe for offshore2.0–2.2 — Borderline offshoreOver 2.2 — Coastal use recommended
 1.99
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. 6.29 kn
S# (Speed Number) The Speed Number (S#) is a quick performance index. Higher values indicate a faster, more powerful design relative to its size.
Under 3.0 — Slow cruiser3.0–5.0 — Average cruiser5.0–7.0 — Performance cruiserOver 7.0 — Racer
 1.35
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. 789.23 pounds/inch
SA/Displacement (Calc) Calculated Sail Area to Displacement ratio using actual measured sail dimensions rather than reported values. More precise than the reported SA/Disp figure. 15.58
Rig Dimensions
I (Foretriangle Height) 37.90 ft / 11.55 m
J (Foretriangle Base) 12.30 ft / 3.75 m
P (Mainsail Luff) 34.00 ft / 10.36 m
E (Mainsail Foot) 9.50 ft / 2.90 m
SA Fore 233.09 ft² / 21.65 m²
SA Main 161.50 ft² / 15.00 m²
SA Total (100%) 394.59 ft² / 36.66 m²
Est. Forestay Length 39.85 ft / 12.15 m
Engine & Accommodations
Engine Make Volvo Penta
Engine Type Diesel
Horsepower 16
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