Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 25.92 ft
LWL: 20.01 ft
S.A. (reported): 290.00 ft²
Beam: 9.02 ft
Displacement: 4,630.00 lb
Ballast: 2,028.00 lb
Max Draft: 4.10 ft
Construction: FG w/balsa cored deck
First Built: 1973
Last Built: 1988
# Built: 260
Builder: Grell Werft (GERMANY)
Designer: H. Streuer

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Farymann/Bukh
Type: Diesel


Water: 13 gals

Sailboat Calculations

S.A. / Displ.: 16.75
Bal. / Displ.: 43.80
Disp: / Len: 257.98
Comfort Ratio: 17.54
Capsize Screening Formula: 2.17
S#: 2.02
Hull Speed: 5.99 kn
Pounds/Inch Immersion: 644.91 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 29.53 ft
J: 10.93 ft
P: 26.25 ft
E: 9.02 ft
S.A. Fore: 161.38 ft²
S.A. Main: 118.39 ft²
S.A. Total (100% Fore + Main Triangles): 279.77 ft²
S.A./Displ. (calc.): 16.16
Est. Forestay Length: 31.49 ft

Sailboat Links

Designers: Heribert Streuer
Builders: Sirius -Werft GmbH
Download Boat Record:


Fixed and swing keel models.
Swing keel draft: Max 1.32m/4.33 ft; Min .75m/2.46ft
Around 1980 the deck was revised and the coach roof was extended forward with a more traditional squared off appearance. Of these, 20 were built with a wood coach roof and teak decks.
A tall rig was also offered.