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From Wikipedia, the free encyclopedia

US1
Class symbol
Development
DesignerRalph Kuppersmith and Clark Mills
LocationUnited States
Year1973
No. built450
Builder(s)Advance Sailboat Corp.
Continental Sailcraft
RoleOne-design racer
NameUS1
Boat
Displacement190 lb (86 kg)
Draft2.50 ft (0.76 m) with the centerboard down
Hull
TypeMonohull
ConstructionFiberglass
LOA15.42 ft (4.70 m)
LWL13.50 ft (4.11 m)
Beam4.58 ft (1.40 m)
Hull appendages
Keel/board typecenterboard
Rudder(s)transom-mounted rudder
Rig
Rig typeCat rig
Sails
SailplanCatboat
Mainsail area90.00 sq ft (8.361 m2)
Total sail area90.00 sq ft (8.361 m2)
Racing
D-PN91.5

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.[1][2][3]

The design is most likely a catboat-rigged derivation of the Mills-designed Windmill of 1953.[1]

Production

The design was initially built by Kuppersmith's company, the Advance Sailboat Corporation of Parkville, Missouri and later of Independence, Missouri, United States. That company went out of business in 1980 and the boat design was then built by Continental Sailcraft. A total of 450 boats were completed, but it is now out of production.[1][3][4]

Design

The US1 is a recreational sailboat, built predominantly of fiberglass. It has a catboat rig with a loose-footed mainsail and foam-filled aluminum spars to reduce the risk of turtling. The hull features a rounded foredeck, a plumb stem, a vertical transom, a transom-hung, kick-up rudder controlled by a tiller and a retractable centerboard. It displaces 190 lb (86 kg).[1][3]

The boat has a draft of 2.50 ft (0.76 m) with the centerboard extended and 7 in (18 cm) with it retracted, allowing beaching or ground transportation on a trailer or car roof rack.[1]

For sailing the design is equipped with a dual Cunningham and an outhaul.[3]

The class rules allow specific modifications to the boat, including the installation of two bailers, centerboard gaskets, four inspection ports, changes to the sheeting, the boom vang, the Cunningham, mainsheet traveler, outhaul, as well as the rudder and tiller and the centerboard control lines.[3]

At one time the class rules allowed the use of a three-piece mast as an alternative to the standard two-piece mast, but this change was repealed.[3]

The design has a Portsmouth Yardstick racing average handicap of 91.5 and is normally raced with a crew of one or two sailors, who are limited by the class rules to 270 lb (122 kg) total weight.[3]

Operational history

In 1994 there were active fleets racing in Missouri, Ohio, Pennsylvania and Texas.[3]

See also

References

  1. ^ a b c d e McArthur, Bruce (2020). "US1 sailboat". sailboatdata.com. Archived from the original on 20 August 2020. Retrieved 20 August 2020.
  2. ^ McArthur, Bruce (2020). "Clark Mills 1915-2001". sailboatdata.com. Archived from the original on 20 August 2020. Retrieved 20 August 2020.
  3. ^ a b c d e f g h Sherwood, Richard M.: A Field Guide to Sailboats of North America, Second Edition, pages 56-57. Houghton Mifflin Company, 1994. ISBN 0-395-65239-1
  4. ^ McArthur, Bruce (2020). "Advance Sailboat Corp. 1960-1980". sailboatdata.com. Archived from the original on 20 August 2020. Retrieved 20 August 2020.
This page was last edited on 28 December 2022, at 04:13
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