The Gravesend bay knockabout is a 20.96ft gaffhead sloop designed by John R. Brophy and built in wood planked between 1908 and 1918.
The Gravesend bay knockabout is an ultralight sailboat which is a very high performer. It is not stiff and has a low righting capability if capsized. It is best suited as a racing boat.
Main features
| Model | Gravesend bay knockabout | ||
| Length | 20.96 ft | ||
| Beam | 6 ft | ||
| Draft | 0.67 ft | ||
| Country | ?? | ||
| Estimated price | $ 0 | ?? |
See how Sailboatlab works in video
Ratios
| Sail area / displ. | 37.39 | ||
| Ballast / displ. | 0 % | ||
| Displ. / length | 92.90 | ||
| Comfort ratio | 8.45 | ||
| Capsize | 2.32 |
Hull
| Hull type | Centerboard Dinghy | ||
| Construction | Wood planked | ||
| Waterline length | 17.42 ft | ||
| Maximum draft | 4.50 ft | ||
| Displacement | 1100 lbs | ||
| Ballast | 0 lbs | ||
| Hull speed | 5.59 knots |
We help you build your own hydraulic steering system - Lecomble & Schmitt
Rigging
| Rigging | Gaffhead Sloop | ||
| Sail area (100%) | 249 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 | ?? | ||
| Designer | John R. Brophy | ||
| First built | 1908 | ||
| Last built | 1918 | ||
| Number built | 0 | ?? |
Gravesend bay knockabout for sale elsewhere on the web:
