Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Twin Keel
Rigging Type: Masthead Sloop
LOA: 25.00 ft / 7.62 m
LWL: 19.75 ft / 6.02 m
S.A. (reported): 360.00 ft² / 33.45 m²
Beam: 9.67 ft / 2.95 m
Displacement: 5,800.00 lb / 2,631 kg
Ballast: 2,240.00 lb / 1,016 kg
Max Draft: 3.50 ft / 1.07 m
Construction: FG
First Built: 1977
# Built: 500
Builder: Cobra Yachts (UK)
Designer: David Feltham

KLSC Leaderboard

KLSC Leaderboard

Auxiliary Power/Tanks (orig. equip.)

Make: Volvo
Type: Diesel
HP: 10
Fuel: 8 gals / 30 L


Water: 12 gals / 45 L

Sailboat Calculations

S.A. / Displ.: 17.90
Bal. / Displ.: 38.62
Disp: / Len: 336.11
Comfort Ratio: 20.46
Capsize Screening Formula: 2.16
Hull Speed: 5.96 kn
Pounds/Inch Immersion: 682.40 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Sailboat Links

Designers: David Feltham
Builders: Cobra Yachts (UK)
Associations: Cobra and Seawolf Owners Association
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Most COBRA 750s had twin keels, although a fin keel version was also produced (draft: 4.25"). In the mid-1980s Cobra introduced the 750S which had an identical hull to the earlier model but with a 'blister' style coach roof.

Besides the factory complete boat, Cobra also sold the boat in varying stages of construction.