The Gem 550 is a 18.04ft fractional sloop designed by Rob Humphreys and built in fiberglass by Central Boating Services since 1976.
40 units have been built.
The Gem 550 is a light sailboat which is a very high performer. It is very stable / stiff and has a low righting capability if capsized. It is best suited as a day-boat.
Main features
| Model | Gem 550 | ||
| Length | 18.04 ft | ||
| Beam | 7.91 ft | ||
| Draft | 0.75 ft | ||
| Country | South Africa | ||
| Estimated price | $ 0 | ?? |
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Ratios
| Sail area / displ. | 29.13 | ||
| Ballast / displ. | 34.64 % | ||
| Displ. / length | 110.44 | ||
| Comfort ratio | 6.59 | ||
| Capsize | 3.03 |
Hull
| Hull type | Monohull swing keel | ||
| Construction | Fiberglass | ||
| Waterline length | 16.67 ft | ||
| Maximum draft | 3.28 ft | ||
| Displacement | 1146 lbs | ||
| Ballast | 397 lbs | ||
| Hull speed | 5.47 knots |
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Rigging
| Rigging | Fractional Sloop | ||
| Sail area (100%) | 199 sq.ft | ||
| Air draft | 0 ft | ?? | |
| Sail area fore | 0 sq.ft | ?? | |
| Sail area main | 0 sq.ft | ?? | |
| I | 0 ft | ?? | |
| J | 0 ft | ?? | |
| P | 0 ft | ?? | |
| E | 0 ft | ?? |
Engine
| Nb engines | 1 | ||
| Total power | 0 HP | ||
| Fuel capacity | 0 gals |
Accommodations
| Water capacity | 0 gals | ||
| Headroom | 0 ft | ||
| Nb of cabins | 0 | ||
| Nb of berths | 0 | ||
| Nb heads | 0 |
Builder data
| Builder | Central Boating Services | ||
| Designer | Rob Humphreys | ||
| First built | 1976 | ||
| Last built | 0 | ?? | |
| Number built | 40 |
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