USS Shamrock

History
United States
Launched	17 March 1863
Commissioned	13 June 1864
Decommissioned	15 August 1865
In service	17 October 1865
Out of service	10 August 1868
Fate	Sold on 1 September 1868
General characteristics
Class and type	Sassacus-class gunboat
Displacement	974 tons
Length	205 ft (62 m)
Beam	35 ft (11 m)
Draft	8 ft 10 in (2.69 m)
Depth of hold	12 ft (3.7 m)
Propulsion	steam engine side wheel-propelled double ended
Speed	13 knots (24 km/h; 15 mph)
Complement	160
Armament	two 100-pounder Parrott rifles four 9 in (229 mm) smoothbore Dahlgren guns two 20-pounder Parrott rifles two 24-pounder howitzers one heavy 12-pounder smoothbore gun

USS Shamrock was a large (974 ton) seaworthy steamer with powerful guns, acquired by the Union Navy during the American Civil War. She was used by the Union Navy as a gunboat in support of the Union Navy blockade of Confederate waterways.

During the war, she participated in the operation of placing a spar torpedo into the ironclad CSS Albemarle, allowing Shamrock to sail on with the Union fleet to attack and capture Plymouth, North Carolina. After the war, she served in the Caribbean and voyaged to Europe prior to final decommissioning.