Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Trimaran with fixed unballasted keel
Rigging Type: Masthead Ketch
LOA: 12.50 m
LWL: 11.73 m
S.A. (reported): 71.63 m²
Beam: 7.77 m
Displacement: 6,350 kg
Max Draft: 0.89 m
Construction: FG
First Built: 1965
Last Built: 1993
# Built: 28
Builder: Corinthian Yachts Builders Inc. (USA)
Designer: Ted Irwin

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Perkins
HP: 50
Fuel: 379 L


Water: 379 L

Sailboat Calculations

S.A. / Displ.: 21.31
Disp: / Len: 109.52
KSP: 0.73

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

Mast Height from DWL: 14.02 m

Sailboat Links

Designers: Arthur Piver
Ted Irwin
Download Boat Record:


Claimed to be the first fiberglass production multihull built in the US.
Ted Irwin's only production multihull design.
Similar to Arthur Piver's Victress 40 design, it has been said Irwin consulted with Charlie Morgan, Morgan Yachts, on this design and at the time, Arthur Piver was working for Morgan.
All interiors were custom built and vary from boat to boat.
Bruce Number: 1.16