Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 29.00 ft
LWL: 21.25 ft
S.A. (reported): 386.00 ft²
Beam: 9.00 ft
Displacement: 7,250.00 lb
Ballast: 3,750.00 lb
Max Draft: 4.50 ft
Construction: FG
Ballast Type: Lead
First Built: 1972
Builder: Northern Yachts Ltd. (CAN)
Designer: Sparkman & Stephens

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Universal
Model: Atomic 4
Type: Gas
HP: 30
Fuel: 10 gals


Water: 15 gals

Sailboat Calculations

S.A. / Displ.: 16.54
Bal. / Displ.: 51.72
Disp: / Len: 337.30
Comfort Ratio: 25.46
Capsize Screening Formula: 1.86
S#: 1.45
Hull Speed: 6.18 kn
Pounds/Inch Immersion: 683.36 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 37.00 ft
J: 12.13 ft
P: 32.25 ft
E: 10.00 ft
S.A. Fore: 224.41 ft²
S.A. Main: 161.25 ft²
S.A. Total (100% Fore + Main Triangles): 385.66 ft²
S.A./Displ. (calc.): 16.52
Est. Forestay Length: 38.94 ft
Mast Height from DWL: 42.00 ft

Sailboat Links

Designers: Sparkman & Stephens
Builders: Northern Yachts Ltd. (CAN)
Associations: Half Ton Class
Download Boat Record:


S&S design #2047.
IOR Half ton.