Shawnee and Wassuc laid up at the Boston Navy Yard, circa 1871-72
History
United States
Name	USS Wassuc
Ordered	April 1863
Builder	George W. Lawrence & Co., Portland, Maine
Laid down	June 1863
Launched	25 July 1865
Completed	28 October 1865
Commissioned	Never commissioned
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 × 11 in (280 mm) smoothbore Dahlgren guns 1 × 150-pounder Parrott rifle
Armor	Turret: 8 in (200 mm) Pilothouse: 10 in (250 mm) Hull: 3 in (76 mm) Deck: 3 in (76 mm)

USS Wassuc — a single-turreted, twin-screw monitor — was built by the George W. Lawrence & Co., Portland, ME, and launched 25 July 1865, and completed 28 October 1865.

Wassuc 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 24 June 1864 that Wassuc's deck be raised to provide sufficient freeboard. Upon delivery, the monitor was laid up at the Boston Navy Yard; and she saw no commissioned service. She was renamed Stromboli on 15 June 1869, but resumed the name Wassuc on 10 August 1869. Wassuc was sold for scrapping 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.