Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
LOA: 40.63 ft / 12.38 m
LWL: 32.67 ft / 9.96 m
S.A. (reported): 725.00 ft² / 67.35 m²
Beam: 12.25 ft / 3.73 m
Displacement: 17,850.00 lb / 8,097 kg
Ballast: 9,200.00 lb / 4,173 kg
Max Draft: 6.80 ft / 2.07 m
Construction: FG
Ballast Type: Lead
First Built: 1972
Last Built: 1976
# Built: 80
Builder: Tartan Marine (USA)
Designer: Sparkman & Stephens

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Westerbeke
Model: Pilot 20
Type: Diesel
HP: 20

Accomodations

Water: 60 gals / 227 L

Sailboat Calculations

Definitions
S.A. / Displ.: 17.05
Bal. / Displ.: 51.54
Disp: / Len: 228.53
Comfort Ratio: 27.97
Capsize Screening Formula: 1.88
S#: 2.39
Hull Speed: 7.66 kn
Pounds/Inch Immersion: 1,429.99 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 51.00 ft / 15.54 m
J: 17.44 ft / 5.32 m
P: 45.00 ft / 13.72 m
E: 12.44 ft / 3.79 m
S.A. Fore: 444.72 ft² / 41.32 m²
S.A. Main: 279.90 ft² / 26.00 m²
S.A. Total (100% Fore + Main Triangles): 724.62 ft² / 67.32 m²
S.A./Displ. (calc.): 17.04
Est. Forestay Length: 53.90 ft / 16.43 m

Sailboat Links

Designers: Sparkman & Stephens
Builders: Tartan Marine
Download Boat Record:

Notes

S&S design #2095.
The rudder and keel on some of the early boats proved to be undersized, which caused steering problems in stronger winds. (The boat in the photo above may have been one of these!)
Several were re-equipped by S&S with a lead shoe at the bottom of the keel, increasing the draft slightly but improving stability. In 1974 S&S designed a new keel which fitted onto the old bolt pattern, increasing the draft by 7" and displacement by 700 lbs. Though this was offered as an option, most of the last 20 boats were delivered with this new keel and many earlier boats had them retro-fitted.
(Deeper draft: )
The molds were actually first created to build the TARTAN 43 and later adapted for the 41, which proved to be a far more popular model.
TALL RIG:
I: 54.00'
J: 17.33'
P: 47.75'
E: 13.00'
Tot. SA: 778 sq.ft.

Sailboat Forum