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Aqua 30
Designer: Sparkman & Stephens  ·  Builder: Aquafibre Ltd,  ·  First built: 1972
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About the Aqua 30

With limited technical specifications available, the Aqua 30 represents a relatively obscure entry in the 30-foot sailboat market. This moderate-sized vessel appears designed primarily for coastal cruising and weekend sailing adventures, targeting sailors seeking a manageable yet capable platform for near-shore exploration. The boat's 30-foot length positions it in the sweet spot for owner-operated sailing, offering enough space for comfortable short-term cruising while remaining small enough for single-handed or small crew operation. Based on typical design philosophies for boats in this category, the Aqua 30 likely emphasizes practical sailing characteristics over racing performance, making it suitable for recreational sailors prioritizing comfort and ease of handling. Given the scarcity of detailed information, potential buyers should conduct thorough research and sea trials to evaluate the boat's construction quality, sailing characteristics, and overall condition. The limited availability of specifications may reflect either a smaller production run or regional distribution, which could impact parts availability and resale value. Prospective owners would benefit from connecting with existing Aqua 30 sailors or marine surveyors familiar with the model to gain deeper insights into its real-world performance and maintenance requirements.

Core Dimensions
LOA (Length Overall) 29.86 ft / 9.10 m
LWL (Waterline Length) 21.00 ft / 6.40 m
Beam 9.00 ft / 2.74 m
Max Draft 5.42 ft / 1.65 m
Displacement 9,000.00 lb / 4,082 kg
Ballast 3,120.00 lb / 1,415 kg
Sail Area (Reported) 359.00 ft² / 33.35 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Sparkman & Stephens
Builder Aquafibre Ltd,
First Built 1972
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Known Issues & What to Watch For

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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
 13.32
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
 31.49
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
 1.73
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. 6.14
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
 0.8
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. 675.32
Rig Dimensions
I (Foretriangle Height) 36.0
J (Foretriangle Base) 11.97
P (Mainsail Luff) 30.4
E (Mainsail Foot) 9.4
SA Fore 215.46
SA Main 142.88
Find a Aqua 30 For Sale
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