Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 39.83 ft
LWL: 28.83 ft
S.A. (reported): 680.00 ft²
Beam: 10.50 ft
Displacement: 17,000.00 lb
Ballast: 6,700.00 lb
Max Draft: 5.92 ft
Construction: FG
First Built: 1970
Last Built: 1973
Builder: Allied Boat Co. (USA)
Designer: George Owens/Robert Harris

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Fuel: 30 gals


Water: 100 gals

Sailboat Calculations

S.A. / Displ.: 16.52
Bal. / Displ.: 39.41
Disp: / Len: 316.71
Comfort Ratio: 35.68
Capsize Screening Formula: 1.64
S#: 1.59
Hull Speed: 7.19 kn
Pounds/Inch Immersion: 1,081.63 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 45.80 ft
J: 15.50 ft
P: 38.30 ft
E: 17.00 ft
S.A. Fore: 354.95 ft²
S.A. Main: 325.55 ft²
S.A. Total (100% Fore + Main Triangles): 680.50 ft²
S.A./Displ. (calc.): 16.53
Est. Forestay Length: 48.35 ft

Sailboat Links

Designers: MacLear & Harris
Robert B. Harris
Builders: Allied Boat Company Inc. (USA)
Related Sailboats: OWENS CUTTER
Download Boat Record:


Derived from the wooden OWENS CUTTER, 6 boats of this design were first built in fiberglass and sold as the BORSAW 40. The mold was then sold to Allied Boat Company. With a few changes it became the ALLIED 39. The traditional transom was changed to a reverse transom, the underbody was redesigned by Robert Harris to a more modern fin keel, and slightly more beam.
Available as a Sloop or Yawl.