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| Development | |
|---|---|
| Designer | Olin Stephens ofSparkman & Stephens |
| Location | United States |
| Year | 1962 |
| No. built | 259 hulls have been built to date |
| Builder(s) | Cape Cod Shipbuilding Hinckley Yachts Chris-Craft Industries |
| Name | Shields |
| Boat | |
| Displacement | 4,600 lb (2,087 kg) |
| Draft | 4.75 ft (1.45 m) |
| Hull | |
| Type | monohull |
| Construction | fiberglass |
| LOA | 30.21 ft (9.21 m) |
| LWL | 20.00 ft (6.10 m) |
| Beam | 6.42 ft (1.96 m) |
| Hull appendages | |
| Keel/board type | modified long keel |
| Ballast | 3,080 lb (1,397 kg) |
| Rudder | keel-mountedrudder |
| Rig | |
| Rig type | Bermuda rig |
| I foretriangle height | 29.88 ft (9.11 m) |
| J foretriangle base | 9.33 ft (2.84 m) |
| P mainsail luff | 33.38 ft (10.17 m) |
| E mainsail foot | 13.38 ft (4.08 m) |
| Sails | |
| Sailplan | fractional riggedsloop |
| Mainsail area | 223.31 sq ft (20.746 m2) |
| Jib/genoa area | 139.39 sq ft (12.950 m2) |
| Spinnaker area | 360 sq ft (33 m2) |
| Total sail area | 362.70 sq ft (33.696 m2) |
| Racing | |
| D-PN | 83.8 (suspect) |
TheShields, also called theShields 30 and theShields One-Design, is an Americantrailerablesailboat that was designed byOlin Stephens ofSparkman & Stephens as aone designracer and first built in 1962.[1][2][3][4][5]
The design was commissioned by American sailor Cornelius Shields, as afiberglass replacement for the 1930s vintageInternational One Design and is Sparkman & Stephens design #1720. Shields had boats with hull numbers 1 to 31 constructed atCape Cod Shipbuilding and he donated them to several American universities on the US east coast. The boat class was named after him in honor of his donations. In the end he donated over 100 of the boats to various colleges and universities, including 15 donated to universities in southern California.[1][4]
The design was initially built by Cape Cod Shipbuilding, then hulls numbers 32 to 189 byChris-Craft Industries and hull numbers 190 to 200 byHinckley Yachts in theUnited States. Today it is once again hull numbers 201 to 259 built by Cape Cod Shipbuilding and remains in production. 5 hull numbers were assigned to boats that were built to replace the 5 Navy War College boats that had burned.[1][3][5]

The Shields is a racingkeelboat, built predominantly offiberglass, withteak wood trim, including teakcoamings, toe-rails, handrails, the cockpit floor grating and the cockpit seats. It has afractionalsloop rig withaluminum spars. The hull has a spooned,raked stem; a sharply raised counter, angledtransom; akeel-mountedrudder controlled by atiller and a fixed modified longkeel. There is no cabin. It displaces 4,600 lb (2,087 kg) and carries 3,080 lb (1,397 kg) of lead ballast.[1][3]
The boat has a draft of 4.75 ft (1.45 m) with the standard keel.[1]
For sailing the design is equipped with ahalyardwinch console, with verticalcleats to secure the halyards. The design rules limit the adjustablebackstay, theboom vang and themainsheet to a maximum of an 8:1mechanical advantage. Ajib is used, but agenoa is not permitted under class rules. Buoyancy is provided by under-seat flotation compartments and fore and aft watertight bulkheads.[3] Aspinnaker of 360 sq ft (33 m2) may be used.[6]
The current Cape Cod production boat has, as standard equipment, a 4:1 boom vang, 8:1 backstay and a 4:1mainsheet traveler. Optional equipment includes abilge pump,spinnaker and launch basket,Cunningham, a digital compass and aboat trailer for ground transportation.[5]
The design has aPortsmouth Yardstick DP-N racing average handicap of 83.8 (listed as "suspect").[3]

The boat is supported by an active class club that organizes racing events, theShields Class Sailing Association. There are racing fleets only found in the USA in theNortheast, Midwest. Southeast. Mid Atlantic and inCalifornia.[5][7]
TheOrange Coast College School of Sailing & Seamanship, a publiccommunity college inCosta Mesa, California operates a fleet of Shields for their training program, mostly consisting of boats donated by Shields,[4] plus Oakcliff Sailing on Long Island, New York.
In a 1994 review Richard Sherwood wrote, "this beautiful boat is used for day sailing and, particularly, for racing. Class rules are rigid. For example, only one set of sails is allowed per year."[3]
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