Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Twin Keel
Rigging Type: Masthead Sloop
LOA: 23.00 ft
LWL: 18.33 ft
S.A. (reported): 245.00 ft²
Beam: 8.75 ft
Displacement: 4,250.00 lb
Ballast: 2,000.00 lb
Max Draft: 3.00 ft
Construction: FG
First Built: 1980
# Built: 50
Builder: Cobra Yachts (UK)
Designer: David Feltham

Accomodations

Headroom: 5.75 ft

Sailboat Calculations

Definitions
S.A. / Displ.: 14.98
Bal. / Displ.: 47.06
Disp: / Len: 308.07
Comfort Ratio: 18.51
Capsize Screening Formula: 2.16
S#: 1.54
Hull Speed: 5.74 kn
Pounds/Inch Immersion: 573.08 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 30.25 ft
J: 9.50 ft
P: 26.00 ft
E: 8.00 ft
S.A. Fore: 143.69 ft²
S.A. Main: 104.00 ft²
S.A. Total (100% Fore + Main Triangles): 247.69 ft²
S.A./Displ. (calc.): 15.15
Est. Forestay Length: 31.71 ft

Sailboat Links

Designers: David Feltham
Builders: Cobra Yachts (UK)
Associations: Cobra and Seawolf Owners Association
Download Boat Record:

Notes

Available with a fin keel. draft: 1.22m / 4 ft.
Reported sail area = main + #2 Genoa.
Sail area:
Main: 105 ft² / 9.76 m²
#1 Genoa: 190 ft² / 17.67 m²
#2 Genoa: 140 ft² / 13.02 m²
Working Jib; 100 ft² / 9.30 m²
Storm Jib: 50 ft² / 4.65 m²
Spinnaker: 430 ft² / 40 m²

Many were completed from kits.

Thanks to Cobra 700 owner Chaz Richards for sending additional information.