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SWALLOW
• Designed by Tom Thornycroft
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.