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Oysterman 23
Designer: Chappelle  ·  Builder: Menger Enterprises  ·  First built: 1977
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About the Oysterman 23

A compact coastal cruiser with a name that evokes working waterways and traditional seamanship, the Oysterman 23 carries the spirit of practical, no-nonsense sailing. Designed with everyday sailors in mind, this modest pocket cruiser suits those looking to explore sheltered coastal waters, estuaries, and inland lakes without the complexity or cost of a larger vessel. While detailed specifications remain limited in available records, the Oysterman 23 fits within a class of small cruisers built for accessible, relaxed sailing rather than racing performance. Boats in this category typically prioritize stability and ease of handling, making them appealing to newer sailors or small families seeking a manageable introduction to overnight and weekend cruising. The Oysterman name itself suggests a connection to coastal heritage, hinting at a design philosophy rooted in dependability and workboat sensibility rather than flashy performance. For buyers researching an affordable entry into keelboat sailing, the Oysterman 23 is worth investigating as a practical, characterful option. Those considering a purchase would benefit from a thorough survey, particularly given the likely age of surviving examples.

Core Dimensions
LOA (Length Overall) 31.25 ft / 9.53 m
LWL (Waterline Length) 21.08 ft / 6.43 m
Beam 8.00 ft / 2.44 m
Max Draft 1.67 ft / 0.51 m
Min Draft 0.50 ft / 0.15 m
Displacement 2,600.00 lb / 1,179 kg
Ballast 500.00 lb / 227 kg
Sail Area (Reported) 370.00 ft² / 34.37 m²
Design & Construction
Hull Type Cbrd w/outboard rudder
Rigging Type Masthead Sloop
Construction FG
Designer Chappelle
Builder Menger Enterprises
First Built 1977
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Known Issues & What to Watch For

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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
31.39
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
10.43
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
2.33
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. 6.15
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. 602.57
How It Compares

vs. Cape Dory 31, Hunter 31, Irwin 31 Citation

This boat Similar boats
Dimensions
LOA
Oysterman 23 ★
31.3 ft
Cape Dory 31
31.3 ft
Hunter 31
31.3 ft
Irwin 31 Citation
31.3 ft
LWL
Oysterman 23 ★
21.1 ft
Cape Dory 31
23.3 ft
Hunter 31
26.3 ft
Irwin 31 Citation
26.5 ft
Beam
Oysterman 23 ★
8.0 ft
Cape Dory 31
9.8 ft
Hunter 31
10.9 ft
Irwin 31 Citation
11.0 ft
Displacement
Oysterman 23 ★
2 lbs
Cape Dory 31
11 lbs
Hunter 31
9 lbs
Irwin 31 Citation
9 lbs
Ballast
Oysterman 23 ★
500 lbs
Cape Dory 31
4 lbs
Hunter 31
4 lbs
Irwin 31 Citation
3 lbs
Sail Area
Oysterman 23 ★
370 sq ft
Cape Dory 31
504 sq ft
Hunter 31
458 sq ft
Irwin 31 Citation
474 sq ft
Performance
PHRF Rating (lower = faster)
Oysterman 23 ★
Cape Dory 31
198 s/nm
Hunter 31
183 s/nm
Irwin 31 Citation
165 s/nm
SA / Displacement (higher = more powerful)
Oysterman 23 ★
31.4
Cape Dory 31
15.9
Hunter 31
16.2
Irwin 31 Citation
17.2
Ballast / Disp (higher = stiffer)
Oysterman 23 ★
Cape Dory 31
37.8 %
Hunter 31
41.2 %
Irwin 31 Citation
36.6 %
Comfort Ratio (higher = more comfortable offshore)
Oysterman 23 ★
10.4
Cape Dory 31
33.3
Hunter 31
22.4
Irwin 31 Citation
21.1
Capsize Screening (lower = safer)
Oysterman 23 ★
2.33
Cape Dory 31
1.73
Hunter 31
2.05
Irwin 31 Citation
2.10
Displacement / Length (lower = lighter)
Oysterman 23 ★
Cape Dory 31
408
Hunter 31
239
Irwin 31 Citation
223
Hull Speed
Oysterman 23 ★
6.2 kts
Cape Dory 31
6.5 kts
Hunter 31
6.9 kts
Irwin 31 Citation
6.9 kts
Speed Number (higher = faster)
Oysterman 23 ★
Cape Dory 31
1.0
Hunter 31
2.2
Irwin 31 Citation
2.5
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