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Offshore 36 Cheoy Lee
Designer: Maurice Declercq  ·  Builder: Cheoy Lee Shipyard Ltd.(Hk)  ·  First built: 1966
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About the Offshore 36 Cheoy Lee

Built from 1966 by Hong Kong's respected Cheoy Lee Shipyard, this Maurice Declercq-designed cruiser represents classic 1960s offshore sailing philosophy. With nearly 16,000 pounds of displacement and a substantial 4,700-pound ballast ratio, the Offshore 36 delivers the stability and seaworthiness that made Cheoy Lee's reputation during the golden age of fiberglass yacht construction. The masthead sloop rig and fin keel configuration provide a good balance of performance and comfort for extended cruising. At 35.83 feet overall with a 25.58-foot waterline, she offers respectable accommodations while maintaining manageable size for a cruising couple. The moderate 546 square feet of sail area generates sufficient power without being overwhelming, while the hull's traditional proportions suggest gentle motion in seaways. Her comfort ratio of 40.05 indicates excellent stability for offshore passages, while the capsize screening value of 1.59 falls well within accepted standards for ocean sailing. The 6.78-knot theoretical hull speed reflects her displacement nature—this isn't a speed demon, but rather a steady, reliable passage-maker built for covering miles safely. Cheoy Lee's solid fiberglass construction and attention to detail during this era earned these boats a following among serious cruisers seeking proven offshore capability.

Core Dimensions
LOA (Length Overall) 35.83 ft / 10.92 m
LWL (Waterline Length) 25.58 ft / 7.80 m
Beam 10.00 ft / 3.05 m
Max Draft 4.67 ft / 1.42 m
Displacement 15,950.00 lb / 7,235 kg
Ballast 4,700.00 lb / 2,132 kg
Sail Area (Reported) 546.00 ft² / 50.73 m²
Design & Construction
Hull Type Fin Keel
Rigging Type Masthead Sloop
Construction FG
Designer Maurice DeClercq
Builder Cheoy Lee Shipyard Ltd.(HK)
First Built 1966
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
13.84
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
29.47
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
425.41
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
40.05
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
1.59
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. 6.78 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
0.86
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. 914.00 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. 13.84
Rig Dimensions
I (Foretriangle Height) 41.00 ft / 12.50 m
J (Foretriangle Base) 14.00 ft / 4.27 m
P (Mainsail Luff) 37.00 ft / 11.28 m
E (Mainsail Foot) 14.00 ft / 4.27 m
SA Fore 287.00 ft² / 26.66 m²
SA Main 259.00 ft² / 24.06 m²
SA Total (100%) 546.00 ft² / 50.73 m²
Est. Forestay Length 43.32 ft / 13.20 m
Engine & Accommodations
Engine Make Gray
Engine Type Gas
Horsepower 31
How It Compares

vs. Morgan Out Island 36, Pilot 35 Hinckley, Swan 36

This boat Similar boats
Dimensions
LOA
Offshore 36 Cheoy Lee ★
35.8 ft
Morgan Out Island 36
35.8 ft
Pilot 35 Hinckley
35.8 ft
Swan 36
35.7 ft
LWL
Offshore 36 Cheoy Lee ★
25.6 ft
Morgan Out Island 36
28.0 ft
Pilot 35 Hinckley
25.0 ft
Swan 36
25.9 ft
Beam
Offshore 36 Cheoy Lee ★
10.0 ft
Morgan Out Island 36
11.4 ft
Pilot 35 Hinckley
9.5 ft
Swan 36
9.7 ft
Displacement
Offshore 36 Cheoy Lee ★
15 lbs
Morgan Out Island 36
16 lbs
Pilot 35 Hinckley
13 lbs
Swan 36
14 lbs
Ballast
Offshore 36 Cheoy Lee ★
4 lbs
Morgan Out Island 36
7 lbs
Pilot 35 Hinckley
4 lbs
Swan 36
7 lbs
Sail Area
Offshore 36 Cheoy Lee ★
546 sq ft
Morgan Out Island 36
579 sq ft
Pilot 35 Hinckley
550 sq ft
Swan 36
546 sq ft
Performance
SA / Displacement (higher = more powerful)
Offshore 36 Cheoy Lee ★
13.8
Morgan Out Island 36
14.6
Pilot 35 Hinckley
15.4
Swan 36
14.9
Ballast / Disp (higher = stiffer)
Offshore 36 Cheoy Lee ★
29.5 %
Morgan Out Island 36
46.9 %
Pilot 35 Hinckley
33.6 %
Swan 36
55.5 %
Comfort Ratio (higher = more comfortable offshore)
Offshore 36 Cheoy Lee ★
40.1
Morgan Out Island 36
31.8
Pilot 35 Hinckley
37.4
Swan 36
37.2
Capsize Screening (lower = safer)
Offshore 36 Cheoy Lee ★
1.59
Morgan Out Island 36
1.82
Pilot 35 Hinckley
1.59
Swan 36
1.60
Displacement / Length (lower = lighter)
Offshore 36 Cheoy Lee ★
425
Morgan Out Island 36
325
Pilot 35 Hinckley
391
Swan 36
366
Hull Speed
Offshore 36 Cheoy Lee ★
6.8 kts
Morgan Out Island 36
7.1 kts
Pilot 35 Hinckley
6.7 kts
Swan 36
6.8 kts
Speed Number (higher = faster)
Offshore 36 Cheoy Lee ★
0.9
Morgan Out Island 36
1.4
Pilot 35 Hinckley
1.1
Swan 36
1.2
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