GEMINI 31/3000

GEMINI 31/3000

Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Catamaran Twin Cbrd.
Rigging Type: Masthead Sloop
LOA: 30.50 ft
LWL: 27.58 ft
S.A. (reported): 425.00 ft²
Beam: 14.00 ft
Displacement: 6,520.00 lb
Max Draft: 4.75 ft
Min Draft: 1.33 ft
Construction: FG
First Built: 1981
Last Built: 1990
# Built: 153
Builder: Performance Cruising Inc. (USA)
Designer: Ken Shaw/Tony Smith

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Type: Outboard
Fuel: 40 gals


Water: 16 gals
Headroom: 6.00 ft

Sailboat Calculations

S.A. / Displ.: 19.54
Disp: / Len: 138.74
KSP: 0.67

calculation mobile

2 nd ad half width

3rd ad full width

Sailboat Links

Designers: Tony Smith
Builders: Performance Cruising
Related Sailboats: GEMINI 3200
Download Boat Record:


The GEMINI 31 was the first of Gemini series of cruising catamarans that became the best selling boat of its type being built in the United States. Loosely Based on the earlier ARISTOCAT 30, designed by Musters and Shaw, the 31 was superseded by the very similar Gemini 3000, which remained in production until 1990, when it was in its turn replaced by the slightly longer Gemini 3200.