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Us 27
Designer: Doug Peterson (Unauthorized)/Daryl Watson  ·  Builder: Us Yachts - Bayliner (Usa)  ·  First built: 1983
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About the Us 27

Built by Us Yachts-Bayliner from 1983, this 27-footer represents an interesting collaboration between renowned designer Doug Peterson and Daryl Watson, though the Peterson attribution is noted as unauthorized. The fiberglass construction features a modern fin keel with spade rudder configuration that delivers responsive handling and good upwind performance. With a displacement of 5,836 pounds and 2,024 pounds of ballast, the Us 27 strikes a balance between performance and stability suitable for coastal cruising and club racing. The masthead sloop rig carries 313 square feet of sail area, producing a sail area-to-displacement ratio of 15.5 that places it firmly in performance cruiser territory. The hull speed of 6.46 knots and relatively deep 5.17-foot draft indicate this boat was designed to move well in moderate conditions. The comfort ratio of 18.45 suggests a boat that prioritizes performance over motion comfort, while the capsize screening value of 2.11 indicates reasonable stability for coastal waters but perhaps not ideal for extensive offshore passages. The 23.25-foot waterline length and 9.5-foot beam provide decent interior volume for a boat this size, making it well-suited for weekend cruising and daysailing with occasional overnight trips.

Core Dimensions
LOA (Length Overall) 27.00 ft / 8.23 m
LWL (Waterline Length) 23.25 ft / 7.09 m
Beam 9.50 ft / 2.90 m
Max Draft 5.17 ft / 1.58 m
Displacement 5,836.00 lb / 2,647 kg
Ballast 2,024.00 lb / 918 kg
Sail Area (Reported) 313.00 ft² / 29.08 m²
Headroom 6.00 ft / 1.83 m
Design & Construction
Hull Type Fin w/spade rudder
Rigging Type Masthead Sloop
Construction FG
Designer Doug Peterson (unauthorized)/Daryl Watson
Builder US Yachts - Bayliner (USA)
First Built 1983
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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
 200
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
 15.5
Ballast/Displacement Ballast to Displacement ratio shows what percentage of the boat's total weight is ballast. Higher values generally mean better initial stability and stiffer sail carrying.
30–35% — Typical cruiser35–45% — Stiff performance boatOver 45% — Racing oriented
 34.68
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
 207.3
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
 18.45
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
 2.11
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. 6.46 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
 2.44
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. 789.21 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. 15.47
Rig Dimensions
I (Foretriangle Height) 32.75 ft / 9.98 m
J (Foretriangle Base) 10.75 ft / 3.28 m
P (Mainsail Luff) 28.00 ft / 8.53 m
E (Mainsail Foot) 9.75 ft / 2.97 m
SA Fore 176.03 ft² / 16.35 m²
SA Main 136.50 ft² / 12.68 m²
SA Total (100%) 312.53 ft² / 29.03 m²
Est. Forestay Length 34.47 ft / 10.51 m
Mast Height (DWL) 38.83 ft / 11.84 m
Engine & Accommodations
Engine Make Volvo opt.
Engine Type Diesel
Fuel Capacity 20 gals / 76 L
Water Capacity 29 gals / 110 L
Find a Us 27 For Sale
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