Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin w/spade rudder
Rigging Type: Fractional Sloop
LOA: 23.00 ft
LWL: 19.92 ft
S.A. (reported): 265.00 ft²
Beam: 7.83 ft
Displacement: 2,100.00 lb
Ballast: 930.00 lb
Max Draft: 3.92 ft
Construction: FG
Ballast Type: Lead
First Built: 1980
# Built: 860
Builder: Seidelman
Designer: Bruce Kirby

KLSC Leaderboard

KLSC Leaderboard

Sailboat Calculations

S.A. / Displ.: 25.92
Bal. / Displ.: 44.29
Disp: / Len: 118.61
Comfort Ratio: 10.04
Capsize Screening Formula: 2.45
S#: 5.19
Hull Speed: 5.98 kn
Pounds/Inch Immersion: 557.31 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 25.00 ft
J: 8.90 ft
P: 27.50 ft
E: 11.20 ft
S.A. Fore: 111.25 ft²
S.A. Main: 154.00 ft²
S.A. Total (100% Fore + Main Triangles): 265.25 ft²
S.A./Displ. (calc.): 25.94
Est. Forestay Length: 26.54 ft


Commissioned by members of Noroton YC of Darien CT USA and first built by Seidelmann Yachts.
A few were also built by Carbon Index in the UK.
Current builder (2019) is Rondar Raceboats.