US1
Class symbol | |
| Development | |
|---|---|
| Designer | Ralph Kuppersmith and Clark Mills |
| Location | United States |
| Year | 1973 |
| No. built | 450 |
| Builder(s) | Advance Sailboat Corp. Continental Sailcraft |
| Role | One-design racer |
| Name | US1 |
| Boat | |
| Displacement | 190 lb (86 kg) |
| Draft | 2.50 ft (0.76 m) with the centerboard down |
| Hull | |
| Type | Monohull |
| Construction | Fiberglass |
| LOA | 15.42 ft (4.70 m) |
| LWL | 13.50 ft (4.11 m) |
| Beam | 4.58 ft (1.40 m) |
| Hull appendages | |
| Keel/board type | centerboard |
| Rudder(s) | transom-mounted rudder |
| Rig | |
| Rig type | Cat rig |
| Sails | |
| Sailplan | Catboat |
| Mainsail area | 90.00 sq ft (8.361 m2) |
| Total sail area | 90.00 sq ft (8.361 m2) |
| Racing | |
| D-PN | 91.5 |
The US1, sometimes written US 1, is an American sailing dinghy that was designed by Ralph Kuppersmith and Clark Mills as a one-design racer and first built in 1973.
The design is most likely a catboat-rigged derivation of the Mills-designed Windmill of 1953.