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Carmen 31
Designer: Ron Swanson  ·  Builder: Swanson Brothers (Aus)  ·  First built: 1961
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About the Carmen 31

With limited technical specifications available, the Carmen 31 represents a moderately-sized sailboat that falls into the popular 30-foot range favored by many sailors seeking a balance between manageability and capability. This length category typically appeals to sailors transitioning from smaller boats or those seeking a vessel suitable for both weekend coastal adventures and extended cruising. Based on its size classification, the Carmen 31 would likely serve well for coastal cruising and intermediate offshore passages. Boats in this size range generally offer enough interior volume for comfortable short-term living aboard while remaining manageable for a small crew or even single-handed sailing in moderate conditions. The 31-foot length suggests this vessel could accommodate basic cruising amenities below deck, including sleeping quarters, a compact galley, and essential navigation equipment. Without detailed specifications available, potential buyers should carefully inspect individual boats to assess build quality, sail inventory, and overall condition. For sailors considering the Carmen 31, focus on evaluating the specific boat's maintenance history, rigging condition, and how well it matches your intended sailing goals. This size boat typically represents a sweet spot for those seeking adventure without the complexity of larger vessels.

Core Dimensions
LOA (Length Overall) 31.00 ft / 9.45 m
LWL (Waterline Length) 24.50 ft / 7.47 m
Beam 9.50 ft / 2.90 m
Max Draft 5.00 ft / 1.52 m
Displacement 8,700.00 lb / 3,946 kg
Design & Construction
Hull Type Long Keel
Rigging Type Masthead Sloop
Construction Wood
Designer Ron Swanson
Builder Swanson Brothers (AUS)
First Built 1961
Owner Reviews

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Performance Ratios
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
264.1
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. 4.99 pounds/inch
Rig Dimensions
I (Foretriangle Height) 16.39
J (Foretriangle Base) 12.50 ft / 3.81 m
P (Mainsail Luff) 432.00 ft² / 40.13 m²
E (Mainsail Foot) 264.10
How It Compares

vs. Atalanta 31 Uk, Offshore 31 Cheoy Lee, Rival 31

This boat Similar boats
Dimensions
LOA
Carmen 31 ★
31.0 ft
Atalanta 31 Uk
31.0 ft
Offshore 31 Cheoy Lee
31.0 ft
Rival 31
31.0 ft
LWL
Carmen 31 ★
24.5 ft
Atalanta 31 Uk
27.0 ft
Offshore 31 Cheoy Lee
23.3 ft
Rival 31
24.5 ft
Beam
Carmen 31 ★
9.5 ft
Atalanta 31 Uk
8.0 ft
Offshore 31 Cheoy Lee
8.8 ft
Rival 31
9.7 ft
Displacement
Carmen 31 ★
8 lbs
Atalanta 31 Uk
8 lbs
Offshore 31 Cheoy Lee
10 lbs
Rival 31
11 lbs
Ballast
Carmen 31 ★
Atalanta 31 Uk
2 lbs
Offshore 31 Cheoy Lee
3 lbs
Rival 31
4 lbs
Performance
Ballast / Disp (higher = stiffer)
Carmen 31 ★
Atalanta 31 Uk
25.0 %
Offshore 31 Cheoy Lee
35.5 %
Rival 31
40.0 %
Comfort Ratio (higher = more comfortable offshore)
Carmen 31 ★
Atalanta 31 Uk
27.5
Offshore 31 Cheoy Lee
35.9
Rival 31
31.9
Capsize Screening (lower = safer)
Carmen 31 ★
Atalanta 31 Uk
1.60
Offshore 31 Cheoy Lee
1.59
Rival 31
1.73
Displacement / Length (lower = lighter)
Carmen 31 ★
264
Atalanta 31 Uk
181
Offshore 31 Cheoy Lee
376
Rival 31
339
Hull Speed
Carmen 31 ★
Atalanta 31 Uk
7.0 kts
Offshore 31 Cheoy Lee
6.5 kts
Rival 31
6.6 kts
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