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Us 27 1 Cb
Designer: Stan Huntingford  ·  Builder: Us Yachts - Bayliner (Usa)  ·  First built: 1963
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About the Us 27 1 Cb

Stan Huntingford's design for the US 27 1 Cb represents a practical approach to coastal cruising from the 1960s era. Built by US Yachts/Bayliner from 1963 to 1983, this 27-footer combines traditional proportions with the versatility of a centerboard configuration, allowing access to shallow waters while maintaining reasonable sailing performance. The masthead sloop rig and moderate sail area-to-displacement ratio of 14.8 indicate this boat was designed more for comfortable cruising than racing performance. With a displacement of 6,250 pounds and ballast of 2,024 pounds, the US 27 1 Cb offers sufficient stability for coastal waters while remaining manageable for small crews. The centerboard design provides draft flexibility, making it suitable for exploring shallow bays and anchorages that would challenge deeper-keeled boats. The comfort ratio of 19.75 suggests a motion that's on the quicker side, typical of lighter displacement designs from this era. The capsize screening formula of 2.07 indicates reasonable stability for coastal sailing conditions. With fiberglass construction and a twenty-year production run, these boats demonstrate decent build quality and market acceptance. This design appeals most to sailors seeking an affordable, shoal-draft cruiser for protected waters and coastal exploration.

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 5.20 ft / 1.58 m
Min Draft 3.50 ft / 1.07 m
Displacement 6,250.00 lb / 2,835 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 Keel/Cbrd.
Rigging Type Masthead Sloop
Construction FG
Designer Stan Huntingford
Builder US Yachts - Bayliner (USA)
First Built 1963
Last Built 1983
Related Sailboats Us 27 · Tartan 27 · Cs 27 · C&C 27 · Watkins 27
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
 14.8
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
 32.38
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
 222.01
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
 19.75
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
 2.07
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
 2.21
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. 14.78
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 opt. Volvo diesel
Fuel Capacity 20 gals / 76 L
Water Capacity 29 gals / 110 L
How It Compares

vs. C&C 27, Cs 27, Tartan 27, Us 27, Watkins 27

This boat Similar boats
Dimensions
LOA
Us 27 1 Cb ★
27.0 ft
C&C 27
27.0 ft
Cs 27
27.0 ft
Tartan 27
27.0 ft
Us 27
27.0 ft
Watkins 27
27.0 ft
LWL
Us 27 1 Cb ★
23.3 ft
C&C 27
—
Cs 27
23.9 ft
Tartan 27
21.4 ft
Us 27
23.3 ft
Watkins 27
23.7 ft
Beam
Us 27 1 Cb ★
9.5 ft
C&C 27
—
Cs 27
9.3 ft
Tartan 27
8.6 ft
Us 27
9.5 ft
Watkins 27
10.0 ft
Displacement
Us 27 1 Cb ★
6 lbs
C&C 27
—
Cs 27
6 lbs
Tartan 27
7 lbs
Us 27
5 lbs
Watkins 27
7 lbs
Ballast
Us 27 1 Cb ★
2 lbs
C&C 27
—
Cs 27
2 lbs
Tartan 27
2 lbs
Us 27
2 lbs
Watkins 27
3 lbs
Sail Area
Us 27 1 Cb ★
313 sq ft
C&C 27
—
Cs 27
453 sq ft
Tartan 27
—
Us 27
313 sq ft
Watkins 27
—
Performance
PHRF Rating (lower = faster)
Us 27 1 Cb ★
—
C&C 27
186 s/nm
Cs 27
204 s/nm
Tartan 27
234 s/nm
Us 27
200 s/nm
Watkins 27
234 s/nm
SA / Displacement (higher = more powerful)
Us 27 1 Cb ★
14.8
C&C 27
—
Cs 27
21.8
Tartan 27
—
Us 27
15.5
Watkins 27
—
Ballast / Disp (higher = stiffer)
Us 27 1 Cb ★
32.4 %
C&C 27
—
Cs 27
—
Tartan 27
32.4 %
Us 27
34.7 %
Watkins 27
46.7 %
Comfort Ratio (higher = more comfortable offshore)
Us 27 1 Cb ★
19.8
C&C 27
—
Cs 27
19.4
Tartan 27
—
Us 27
18.5
Watkins 27
—
Capsize Screening (lower = safer)
Us 27 1 Cb ★
2.07
C&C 27
—
Cs 27
2.05
Tartan 27
—
Us 27
2.11
Watkins 27
—
Displacement / Length (lower = lighter)
Us 27 1 Cb ★
222
C&C 27
—
Cs 27
—
Tartan 27
336
Us 27
207
Watkins 27
252
Hull Speed
Us 27 1 Cb ★
6.5 kts
C&C 27
—
Cs 27
6.6 kts
Tartan 27
—
Us 27
6.5 kts
Watkins 27
—
Speed Number (higher = faster)
Us 27 1 Cb ★
2.2
C&C 27
—
Cs 27
2.6
Tartan 27
—
Us 27
2.4
Watkins 27
—
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