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Eo 36
Designer: Robert Perry  ·  Builder: Union Yacht Co. (Tiawan)  ·  First built: 1978
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About the Eo 36

With limited specifications readily available, the Eo 36 represents a somewhat obscure entry in the 36-foot sailboat category that warrants careful research by prospective buyers. This relative scarcity of detailed information suggests either limited production numbers or a boat that hasn't maintained a strong presence in the mainstream sailing market. Based on its designation as a 36-footer, this sailboat would likely fall into the popular mid-size cruising category, potentially suitable for coastal cruising and possibly extended offshore passages depending on its construction and design philosophy. Boats of this length typically offer a good balance between manageable size for a small crew while providing adequate interior space for comfortable cruising. For buyers considering the Eo 36, thorough due diligence becomes particularly important given the limited readily available specifications. Prospective owners should seek out detailed surveys, connect with existing owners if possible, and carefully evaluate parts availability and service support. The boat's relative obscurity could present both opportunities for value-conscious buyers and potential challenges for long-term ownership, making personal inspection and professional evaluation essential steps in the research process.

Core Dimensions
LOA (Length Overall) 35.83 ft / 10.92 m
LWL (Waterline Length) 32.00 ft / 9.75 m
Beam 11.50 ft / 3.51 m
Max Draft 5.50 ft / 1.68 m
Displacement 22,000.00 lb / 9,979 kg
Ballast 7,800.00 lb / 3,538 kg
Sail Area (Reported) 730.00 ft² / 67.82 m²
Design & Construction
Hull Type Long Keel
Rigging Type Cutter
Construction FG
Designer Robert Perry
Builder Union Yacht Co. (Tiawan)
First Built 1978
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
14.93
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
39.66
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
1.64
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. 7.58
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
1.58
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. 1.0
Rig Dimensions
I (Foretriangle Height) 44.3
J (Foretriangle Base) 18.8
P (Mainsail Luff) 39.9
E (Mainsail Foot) 15.7
SA Fore 416.42
SA Main 313.22
How It Compares

vs. Mariner 36 Garden Ketch, Morgan Out Island 36 Ketch, Offshore 36 Cheoy Lee

This boat Similar boats
Dimensions
LOA
Eo 36 ★
35.8 ft
Mariner 36 Garden Ketch
35.8 ft
Morgan Out Island 36 Ketch
35.8 ft
Offshore 36 Cheoy Lee
35.8 ft
LWL
Eo 36 ★
32.0 ft
Mariner 36 Garden Ketch
27.9 ft
Morgan Out Island 36 Ketch
28.0 ft
Offshore 36 Cheoy Lee
25.6 ft
Beam
Eo 36 ★
11.5 ft
Mariner 36 Garden Ketch
11.0 ft
Morgan Out Island 36 Ketch
11.4 ft
Offshore 36 Cheoy Lee
10.0 ft
Displacement
Eo 36 ★
22 lbs
Mariner 36 Garden Ketch
21 lbs
Morgan Out Island 36 Ketch
16 lbs
Offshore 36 Cheoy Lee
15 lbs
Ballast
Eo 36 ★
7 lbs
Mariner 36 Garden Ketch
7 lbs
Morgan Out Island 36 Ketch
7 lbs
Offshore 36 Cheoy Lee
4 lbs
Sail Area
Eo 36 ★
730 sq ft
Mariner 36 Garden Ketch
605 sq ft
Morgan Out Island 36 Ketch
591 sq ft
Offshore 36 Cheoy Lee
546 sq ft
Performance
SA / Displacement (higher = more powerful)
Eo 36 ★
14.9
Mariner 36 Garden Ketch
12.8
Morgan Out Island 36 Ketch
15.0
Offshore 36 Cheoy Lee
13.8
Comfort Ratio (higher = more comfortable offshore)
Eo 36 ★
39.7
Mariner 36 Garden Ketch
44.0
Morgan Out Island 36 Ketch
31.8
Offshore 36 Cheoy Lee
40.1
Capsize Screening (lower = safer)
Eo 36 ★
1.64
Mariner 36 Garden Ketch
1.60
Morgan Out Island 36 Ketch
1.82
Offshore 36 Cheoy Lee
1.59
Hull Speed
Eo 36 ★
7.6 kts
Mariner 36 Garden Ketch
7.1 kts
Morgan Out Island 36 Ketch
7.1 kts
Offshore 36 Cheoy Lee
6.8 kts
Speed Number (higher = faster)
Eo 36 ★
1.6
Mariner 36 Garden Ketch
0.8
Morgan Out Island 36 Ketch
1.2
Offshore 36 Cheoy Lee
0.9
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