Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Catamaran (no boards/asym.)
Rigging Type: Cutter
LOA: 41.00 ft
LWL: 32.00 ft
S.A. (reported): 529.00 ft²
Beam: 19.00 ft
Displacement: 7,000.00 lb
Max Draft: 2.33 ft
Construction: Marine ply
First Built: 1965
Builder: Various
Designer: Wharram

KLSC Leaderboard

KLSC Leaderboard


Headroom: 6.50 ft

Sailboat Calculations

S.A. / Displ.: 23.20
Disp: / Len: 95.37
KSP: 0.78

calculation mobile

2 nd ad half width

3rd ad full width

Sailboat Links

Designers: James Wharram
Download Boat Record:


One of the Classic range designs.
Redesigned Mk II with wider hulls and decks raised to level of gunwale.
The Veed hull shapes with special shaping along the fine keel give all the lateral resistance needed, so no complex dagger boards or projecting keels.
Narai's have been rigged as junks, polynesian sprits, ketch, cutter or gaff schooners.
Hull beam: 7 ft / 2.13 m
Max sail area: 840 sqft / 78.1 sqm.