Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 40.75 ft
LWL: 28.58 ft
S.A. (reported): 738.00 ft²
Beam: 11.00 ft
Displacement: 20,000.00 lb
Ballast: 8,500.00 lb
Max Draft: 6.08 ft
Construction: Wood/Steel/FG
First Built: 1965
# Built: 3
Designer: Einar Ohlson

Auxiliary Power/Tanks (orig. equip.)

Make: Westerbeke
Model: 4-107
Type: Diesel
Fuel: 40 gals

Accomodations

Water: 100 gals

Sailboat Calculations

Definitions
S.A. / Displ.: 16.09
Bal. / Displ.: 42.50
Disp: / Len: 382.47
Comfort Ratio: 39.34
Capsize Screening Formula: 1.62
S#: 1.17
Hull Speed: 7.16 kn
Pounds/Inch Immersion: 1,123.31 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 49.00 ft
J: 15.90 ft
P: 42.50 ft
E: 16.40 ft
S.A. Fore: 389.55 ft²
S.A. Main: 348.50 ft²
S.A. Total (100% Fore + Main Triangles): 738.05 ft²
S.A./Displ. (calc.): 16.09
Est. Forestay Length: 51.52 ft

Sailboat Links

Designers: Einar Ohlson
Download Boat Record:

Notes

The original plans for the OHLSON 41 showed a standard keel with attached rudder. Shown here is a somewhat later rendering.
Thanks to Dr. Lutz v. Meyerinck for providing valuable information on a number of the Ohlson designs.