Beta Marine

Beta Marine

Sailboat Specifications

Hull Type: Fin Keel
Rigging Type: Cutter
LOA: 42.00 ft
LWL: 36.00 ft
S.A. (reported): 745.00 ft²
Beam: 11.33 ft
Displacement: 19,000.00 lb
Ballast: 7,000.00 lb
Max Draft: 5.25 ft
Construction: FG
First Built: 1965
Last Built: 1983
# Built: 26
Builder: Spencer Boats Ltd.
Designer: John Brandlmayr

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Sailboat Calculations

S.A. / Displ.: 16.80
Bal. / Displ.: 36.84
Disp: / Len: 181.80
Comfort Ratio: 30.64
Capsize Screening Formula: 1.70
S#: 2.91
Hull Speed: 8.04 kn
Pounds/Inch Immersion: 1,457.40 pounds/inch

calculation mobile

2 nd ad half width

3rd ad full width

Rig and Sail Particulars

I: 46.50 ft
J: 16.25 ft
P: 39.75 ft
E: 18.50 ft
S.A. Fore: 377.81 ft²
S.A. Main: 367.69 ft²
S.A. Total (100% Fore + Main Triangles): 745.50 ft²
S.A./Displ. (calc.): 16.82
Est. Forestay Length: 49.26 ft

Sailboat Links

Designers: John Brandlmayr
Builders: Spencer Boats Ltd.
Associations: Spencer Yachts Owners Group
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Hull #1 for this boat is listed as having been completed in 1965. It appears that, from the beginning, it was called the SPENCER 42-2. If there was, in fact an earlier version, and how it may have differed from the one shown here, is unknown. A number have been completed as kits. The boats that were completed at the factory were usually customized to the original customers requirements. Listed dimensions vary and are impossible to verify. Some have a ketch rig.
Thanks to ADELIE for pointing out a number of errors and inconsistencies relating to this boat.