International 21 (210)
Description
The International 21, also known as the International 210, is an American one-design keelboat designed by C. Raymond Hunt in 1946 and built by various yards, primarily Graves Yacht Yard in Marblehead, Massachusetts, with production continuing sporadically into the 1980s. Approximately 600 hulls were constructed, making it a popular choice for club racing and daysailing, particularly in New England and the Great Lakes. The fractional sloop rig, fixed fin keel, and lightweight wooden or fiberglass construction (later models) emphasize speed and agility for competitive racing, with a focus on one-design fleets rather than cruising.
Construction Details
| Designer | C. Raymond Hunt |
|---|---|
| Length | 21.000 ft |
| LOA | 14.000 ft |
| LWL | 14.000 ft |
| Beam | 6.000 ft |
| Displacement | 164 lb |
| Max Draft | 4.000 ft |
| Min Draft | 1.160 ft |
The standard boat dimensions
| i | 25 ft |
|---|---|
| j | 7 ft |
| p | 21.50 ft |
| e | 8.50 ft |
| p2 | - |
| e2 | - |
| I | J | P | E | P2 | E2 |
|---|---|---|---|---|---|
| 25 ft | 7 ft | 21.50 ft | 8.50 ft | - | - |
Sails
| Sail Type | MAINSAIL |
|---|---|
| Luff | * 21.5 ft - (6553 mm) |
| Foot | * 8.5 ft - (2591 mm) |
| Leech | * 22.72 ft - (6925 mm) |
| Tack Angle | * 87.99 ° |
| Diagonal | * 22.84 ft - (6962 mm) |
| Head (inches) | * 4 in - (102 mm) |
| Area | 91.26 ft² |
| Sail Type | JIBSAIL |
|---|---|
| Luff | * 20.77 ft - (6331 mm) |
| Foot | * 9.09 ft - (2771 mm) |
| Leech | * 18.41 ft - (5611 mm) |
| Percentage LP | * 115 % |
| Length Perpendicular | * 8.05 ft - (2454 mm) |
| Deck Angle | * 12 ° |
| Area | 83.64 ft² |
| Sail Type | GENOA |
|---|---|
| Luff | * 24.66 ft - (7516 mm) |
| Foot | * 11.15 ft - (3399 mm) |
| Leech | * 23.4 ft - (7132 mm) |
| Percentage LP | * 150 % |
| Length Perpendicular | * 10.5 ft - (3200 mm) |
| Deck Angle | * 4 ° |
| Area | 129.48 ft² |
| Sail Type | SPINNAKER |
|---|---|
| Stays | * 24.66 ft - (7516 mm) |
| MidGirth | * 12.6 ft - (3840 mm) |
| Foot | * 12.6 ft - (3840 mm) |
| Perc LP | * 180 % |
| Area | 264.11 ft² |
Disclaimer. Boats are not all the same -- even when produced in the same factory of the same model. Sailrite does its best to publish accurate dimensions, but we often find it worthwhile to have our customers measure their boats carefully before we produce kits for them. You should take the same precautions, especially when the data is not from Sailrite. The information on this site is not guaranteed to be accurate. Sailrite offers this content as a service to our community, but takes no responsibility for the reliability of the data provided.