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Us 33
Designer: Doug Peterson (Unauthorized)  ·  Builder: Us Yachts - Bayliner  ·  First built: 1981
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About the Us 33

Produced by US Yachts during the 1970s, the US 33 is a fiberglass sloop that earned a following among sailors looking for a capable and affordable coastal cruiser. Designed with weekend and family sailing in mind, this mid-range production boat strikes a balance between comfortable accommodations and reasonable performance under sail, making it a practical choice for those exploring bays, sounds, and nearshore passages. The US 33 carries the hallmarks of American production sailboats from its era — a sturdy fiberglass hull, a modest but functional interior, and a rig suited to easy handling for a small crew or a couple sailing shorthanded. While it is not a dedicated offshore passagemaker or a racing thoroughbred, the boat's solid construction and manageable size appeal to sailors who prioritize reliability and ease of ownership over outright speed. For buyers researching pre-owned boats in this class, the US 33 represents an entry point into keelboat sailing without the complexity or cost of larger vessels. As with any older fiberglass design, careful inspection of the hull, deck hardware, and rigging is essential before purchase.

Core Dimensions
LOA (Length Overall) 32.83 ft / 10.01 m
LWL (Waterline Length) 26.50 ft / 8.08 m
Beam 10.50 ft / 3.20 m
Max Draft 5.50 ft / 1.68 m
Displacement 9,300.00 lb / 4,218 kg
Ballast 4,600.00 lb / 2,087 kg
Sail Area (Reported) 493.00 ft² / 45.80 m²
Headroom 6.17 ft / 1.88 m
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Doug Peterson (unauthorized)
Builder US Yachts - Bayliner
First Built 1981
Last Built 1983
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Known Issues & What to Watch For

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Performance Ratios
PHRF Rating PHRF (Performance Handicap Racing Fleet) is a national racing handicap measured in seconds per nautical mile. Lower values indicate faster boats. Ratings are sourced from US Sailing's national database (median across 60+ regional fleets).
Under 0 — Ultralight racer0–90 — Performance racer90–150 — Cruiser/racer150–210 — Typical cruiserOver 210 — Heavy/slow cruiser
 138
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
 17.9
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
 22.08
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
 2
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. 6.9
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
 2.54
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. 994.22
Rig Dimensions
I (Foretriangle Height) 42.96
J (Foretriangle Base) 13.83
P (Mainsail Luff) 38.0
E (Mainsail Foot) 10.28
SA Fore 297.07
SA Main 195.32
Find a Us 33 For Sale
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