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Offshore 41 Cheoy Lee
Designer: Ray Richards  ·  Builder: Cheoy Lee Shipyard Ltd.(Hk)  ·  First built: 1972
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About the Offshore 41 Cheoy Lee

Built by the renowned Cheoy Lee Shipyard in Hong Kong starting in 1972, this handsome 41-footer represents classic offshore cruising design from the era when performance and seaworthiness took precedence over interior volume. Designer Ray Richards created a boat with traditional proportions that inspire confidence in challenging conditions, featuring a moderate beam of 12.75 feet and substantial displacement of over 21,000 pounds. The fin keel configuration with rudder on skeg provides excellent tracking and directional stability, while the generous ballast-to-displacement ratio ensures powerful self-righting capability. With a comfort ratio of 31.42, this boat delivers the motion characteristics that make long passages bearable, though some may find her a bit stiff in a seaway. The masthead sloop rig with 833 square feet of sail area offers manageable sail handling for a cruising couple, while still providing respectable performance with a hull speed of 7.64 knots. Her capsize screening value of 1.85 falls well within accepted offshore standards, reflecting the conservative design philosophy that made Cheoy Lee boats respected among serious cruising sailors. With only 100 hulls built, the Offshore 41 represents quality construction from an era when fiberglass boats were built to last generations.

Core Dimensions
LOA (Length Overall) 40.92 ft / 12.47 m
LWL (Waterline Length) 32.50 ft / 9.91 m
Beam 12.75 ft / 3.89 m
Max Draft 6.00 ft / 1.83 m
Displacement 21,130.00 lb / 9,584 kg
Ballast 8,900.00 lb / 4,037 kg
Sail Area (Reported) 833.00 ft² / 77.39 m²
Design & Construction
Hull Type Fin with rudder on skeg
Rigging Type Masthead Sloop
Construction FG
Designer Ray Richards
Builder Cheoy Lee Shipyard Ltd.(HK)
First Built 1972
Number Built 100
Associations Cheoy Lee Association Web Site
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
17.51
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
42.12
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
274.79
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
31.42
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
1.85
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. 7.64 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
1.85
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. 1,480.61 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. 15.88
Rig Dimensions
I (Foretriangle Height) 51.20 ft / 15.61 m
J (Foretriangle Base) 17.30 ft / 5.27 m
P (Mainsail Luff) 46.00 ft / 14.02 m
E (Mainsail Foot) 13.60 ft / 4.15 m
SA Fore 442.88 ft² / 41.14 m²
SA Main 312.80 ft² / 29.06 m²
SA Total (100%) 755.68 ft² / 70.20 m²
Est. Forestay Length 54.04 ft / 16.47 m
Engine & Accommodations
Fuel Capacity 50 gals / 189 L
Water Capacity 130 gals / 492 L
How It Compares

vs. Ct 41, Formosa 41, Gulfstar 41 Kth, Sea Tiger 41, Yankee Clipper 41

This boat Similar boats
Dimensions
LOA
Offshore 41 Cheoy Lee ★
40.9 ft
Ct 41
41.0 ft
Formosa 41
40.9 ft
Gulfstar 41 Kth
41.0 ft
Sea Tiger 41
41.0 ft
Yankee Clipper 41
40.9 ft
LWL
Offshore 41 Cheoy Lee ★
32.5 ft
Ct 41
32.5 ft
Formosa 41
32.0 ft
Gulfstar 41 Kth
33.0 ft
Sea Tiger 41
35.0 ft
Yankee Clipper 41
32.0 ft
Beam
Offshore 41 Cheoy Lee ★
12.8 ft
Ct 41
12.1 ft
Formosa 41
12.2 ft
Gulfstar 41 Kth
12.0 ft
Sea Tiger 41
12.0 ft
Yankee Clipper 41
12.2 ft
Displacement
Offshore 41 Cheoy Lee ★
21 lbs
Ct 41
27 lbs
Formosa 41
28 lbs
Gulfstar 41 Kth
22 lbs
Sea Tiger 41
28 lbs
Yankee Clipper 41
28 lbs
Ballast
Offshore 41 Cheoy Lee ★
8 lbs
Ct 41
9 lbs
Formosa 41
9 lbs
Gulfstar 41 Kth
7 lbs
Sea Tiger 41
Yankee Clipper 41
9 lbs
Sail Area
Offshore 41 Cheoy Lee ★
833 sq ft
Ct 41
792 sq ft
Formosa 41
780 sq ft
Gulfstar 41 Kth
723 sq ft
Sea Tiger 41
769 sq ft
Yankee Clipper 41
780 sq ft
Performance
PHRF Rating (lower = faster)
Offshore 41 Cheoy Lee ★
Ct 41
204 s/nm
Formosa 41
221 s/nm
Gulfstar 41 Kth
159 s/nm
Sea Tiger 41
216 s/nm
Yankee Clipper 41
183 s/nm
SA / Displacement (higher = more powerful)
Offshore 41 Cheoy Lee ★
17.5
Ct 41
14.0
Formosa 41
13.6
Gulfstar 41 Kth
14.8
Sea Tiger 41
13.4
Yankee Clipper 41
13.6
Ballast / Disp (higher = stiffer)
Offshore 41 Cheoy Lee ★
42.1 %
Ct 41
32.7 %
Formosa 41
32.9 %
Gulfstar 41 Kth
31.8 %
Sea Tiger 41
Yankee Clipper 41
Comfort Ratio (higher = more comfortable offshore)
Offshore 41 Cheoy Lee ★
31.4
Ct 41
43.8
Formosa 41
44.8
Gulfstar 41 Kth
35.1
Sea Tiger 41
43.0
Yankee Clipper 41
44.8
Capsize Screening (lower = safer)
Offshore 41 Cheoy Lee ★
1.85
Ct 41
1.61
Formosa 41
1.61
Gulfstar 41 Kth
1.72
Sea Tiger 41
1.58
Yankee Clipper 41
1.61
Displacement / Length (lower = lighter)
Offshore 41 Cheoy Lee ★
274
Ct 41
357
Formosa 41
381
Gulfstar 41 Kth
273
Sea Tiger 41
291
Yankee Clipper 41
Hull Speed
Offshore 41 Cheoy Lee ★
7.6 kts
Ct 41
7.6 kts
Formosa 41
7.6 kts
Gulfstar 41 Kth
7.7 kts
Sea Tiger 41
7.9 kts
Yankee Clipper 41
7.6 kts
Speed Number (higher = faster)
Offshore 41 Cheoy Lee ★
1.9
Ct 41
1.2
Formosa 41
0.9
Gulfstar 41 Kth
1.5
Sea Tiger 41
1.5
Yankee Clipper 41
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