USS Shawnee

	Shawnee and Wassuc laid up at the Boston Navy Yard, circa 1871-72.
History
United States
Name	USS Shawnee
Ordered	Apr 1863
Builder	James Tetlow (ironwork); Curtis & Tilden (woodwork); Built at the Curtis & Tilden yard in Boston, MA;
Acquired	22 Jul 1865
Commissioned	18 Aug 1865
Decommissioned	Nov? 1865
Fate	Sold for scrap, 9 September 1875
General characteristics
Class and type	Casco-class monitor
Displacement	1,175 long tons (1,194 t)
Length	225 ft (69 m)
Beam	45 ft (14 m)
Draft	9 ft (2.7 m)
Propulsion	Screw steamer
Speed	9 knots (10 mph; 17 km/h)
Complement	69 officers and enlisted
Armament	2 × guns of unknown type
Armor	Turret: 8 in (200 mm); Pilothouse: 10 in (250 mm); Hull: 3 in (76 mm); Deck: 3 in (76 mm);

USS Shawnee was a single-turreted, twin-screw monitor built by Curtis & Tilden, Boston, Massachusetts, United States. It was delivered 22 July 1865, and commissioned 18 August 1865.

Shawnee was a Casco-class, light-draft monitor intended for service in the shallow bays, rivers, and inlets of the Confederacy. These warships sacrificed armor plate for a shallow draft and were fitted with a ballast compartment designed to lower them in the water during battle.

Design revisions

Though the original designs for the Casco-class monitors were drawn by John Ericsson, the final revision was created by Chief Engineer Alban C. Stimers following Rear Admiral Samuel F. Du Pont's failed bombardment of Fort Sumter in 1863. By the time that the plans were put before the Monitor Board in New York City, Ericsson and Simers had a poor relationship, and Chief of the Bureau of Construction and Repair John Lenthall had little connection to the board. This resulted in the plans being approved and 20 vessels ordered without serious scrutiny of the new design. $14 million US was allocated for the construction of these vessels. It was discovered that Stimers had failed to compensate for the armor his revisions added to the original plan and this resulted in excessive stress on the wooden hull frames and a freeboard of only 3 inches. Stimers was removed from the control of the project and Ericsson was called in to undo the damage. He was forced to raise the hulls of the monitors under construction by 22 inches to make them seaworthy.

Fate

Therefore, the Navy Department ordered on 10 November 1865 that Shawnee to be laid up in ordinary at the Boston Navy Yard. In June 1869, she was renamed Eolus, but regained her original name less than two months later. Shawnee was sold for scrap on 9 September 1875.

References

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships. The entry can be found here.

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