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SWALLOW

• Designed by Tom Thornycroft
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SWALLOW - Photo
SWALLOW - Drawing

General Information

Hull Type: Fin Keel
Rigging Type: Fractional Sloop
Construction: Wood/FG
First Built: 1948
Number Built: 90

Dimensions

Length Overall (LOA): 7.75 m
Length Waterline (LWL): 5.79 m
Beam: 1.68 m
Draft (Max): 1.04 m

Weight & Ballast

Displacement: 1,022 kg
Ballast: 608 kg

Sail Plan

Foresail Area: 7.10 m²
Mainsail Area: 13.42 m²
Total Sail Area (calculated): 20.52 m²
Sail Area (reported): 18.58 m²
I (Fore Triangle Height): 6.40 m
J (Fore Triangle Base): 2.22 m
P (Mainsail Hoist): 8.23 m
E (Boom Length): 3.26 m

Engine & Systems

Performance Ratios

Hull Speed: 5.84 knots
SA/Displacement (Calculated): 20.22
SA/Displacement (Reported): 18.66
Ballast/Disp Ratio: 59.48%
Displacement/Length: 146.64
Comfort Ratio: 17.16
Capsize Screening: 1.68
S-Number: 3.92

Notes

Designed for, and used in the 1948 Olympic Games, the SWALLOW, is still raced in a number of fleets in the UK. New boats have been built of fiberglass while the surviving wood ones are reported to have remained competitive.