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GEM 550
Built by Central Boating Services
• Designed by Rob Humphries
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General Information
Hull Type:
Swing Keel
Rigging Type:
Fractional Sloop
First Built:
1976
Number Built:
40
Dimensions
Length Overall (LOA):
5.50 m
Length Waterline (LWL):
5.08 m
Beam:
2.41 m
Draft (Max):
1.00 m
Draft (Min):
0.23 m
Weight & Ballast
Displacement:
520 kg
Ballast:
180 kg
Sail Plan
Sail Area (reported):
18.49 m²
Engine & Systems
Performance Ratios
Hull Speed:
5.47 knots
SA/Displacement (Reported):
29.13
Ballast/Disp Ratio:
34.64%
Displacement/Length:
110.44
Comfort Ratio:
6.59
Capsize Screening:
3.03
Immersion:
84 kg/cm
Notes
Originaly designed as a European IOR Micro Tonner, but has become most popular in Australia where it is was still built, at least, until 2003.
Market Value
No pricing data available yet.
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