SPEARHEAD (SOUTH AFRICAN)

SPEARHEAD (SOUTH AFRICAN)

Beta Marine

Beta Marine

Sailboat Specifications

Definitions
Hull Type: Centerboard Dinghy
Rigging Type: Fractional Sloop
LOA: 16.00 ft
LWL: 16.00 ft
S.A. (reported): 130.00 ft²
Beam: 4.50 ft
Displacement: 226.00 lb
Construction: FG
First Built: 1957
Builder: Johnny and Hilary Spears
Designer: Frank Spears

KLSC Leaderboard

KLSC Leaderboard

Sailboat Calculations

Definitions
S.A. / Displ.: 56.11
Disp: / Len: 24.63
Comfort Ratio: 2.94
Capsize Screening Formula: 2.96
Hull Speed: 5.36 kn
Pounds/Inch Immersion: 257.26 pounds/inch

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Notes

A development of the Goodricke type dinghy sailed in South Africa, designed by Frank Spears and built by Johnny and Hilary Spears.
A high performance dinghy with trapeze.
It became a one-design class in 1963 and raced as such into the mid-1980's. It is possible that more than 200 were built.
Data from original plans
Early boats built of moulded plywood.