Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Ketch
LOA: 39.12 ft
LWL: 31.00 ft
S.A. (reported): 786.00 ft²
Beam: 13.33 ft
Displacement: 24,300.00 lb
Ballast: 8,937.00 lb
Max Draft: 5.25 ft
Construction: FG
Ballast Type: Lead
First Built: 1979
Last Built: 1984
Builder: Kang Nam Shipbuilders (KOREA)
Designer: Sparkman & Stephens

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Perkins
Type: Diesel
Fuel: 50 gals


Water: 164 gals

Sailboat Calculations

S.A. / Displ.: 15.05
Bal. / Displ.: 36.78
Disp: / Len: 364.14
Comfort Ratio: 35.68
Capsize Screening Formula: 1.84
Hull Speed: 7.46 kn
Pounds/Inch Immersion: 1,476.52 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Sailboat Links

Designers: Sparkman & Stephens
Builders: Kang Nam Shipbuilders (KOR)
Related Sailboats: NORTH STAR 80/20
Download Boat Record:


S&S #2134.2. One of a number of boats built to this design around the world including the NORTH STAR 80/20(HUGHES 40). Others were based on this hull with various modifications to the deck and coachroof.
Thanks to SWIFT 40 owner Norm Owens for supplying this information.