Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Keel/CB & spade rudder
Rigging Type: Masthead Sloop
LOA: 27.08 ft / 8.25 m
LWL: 20.50 ft / 6.25 m
S.A. (reported): 356.00 ft² / 33.07 m²
Beam: 8.67 ft / 2.64 m
Displacement: 6,600.00 lb / 2,994 kg
Max Draft: 7.83 ft / 2.39 m
Min Draft: 2.67 ft / 0.81 m
Construction: FG
Ballast Type: Lead
First Built: 1967
Builder: Irwin Yachts (USA)
Designer: Ted Irwin

Auxiliary Power/Tanks (orig. equip.)

Make: Universal
Model: Atomic 4
Type: Gas

Sailboat Calculations

Definitions
S.A. / Displ.: 16.24
Disp: / Len: 342.01
Comfort Ratio: 25.55
Capsize Screening Formula: 1.85
S#: 1.45
Hull Speed: 6.07 kn
Pounds/Inch Immersion: 635.07 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

HELP
I: 34.00 ft / 10.36 m
J: 10.50 ft / 3.20 m
P: 31.67 ft / 9.65 m
E: 12.25 ft / 3.73 m
S.A. Fore: 178.50 ft² / 16.58 m²
S.A. Main: 193.98 ft² / 18.02 m²
S.A. Total (100% Fore + Main Triangles): 372.48 ft² / 34.60 m²
S.A./Displ. (calc.): 16.99
Est. Forestay Length: 35.58 ft / 10.84 m

Sailboat Links

Designers: Ted Irwin
Builders: Irwin Yachts
Associations: Irwin Facebook Group
Irwin Yacht Owners
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