Military Wiki

This wiki's URL has been migrated to the primary domain.Read more here


Military Wiki
USS Tonawanda (1864)
The USS Tonawanda in the Severn River serving as a training ship in the late 1860s.
Name: USS Tonawanda
Builder: Philadelphia Navy Yard
Laid down: 1862
Launched: 6 May 1864
Commissioned: 12 October 1865
Decommissioned: 22 December 1865
Recommissioned: 23 October 1866
Decommissioned: 1872
Renamed: USS Amphitrite, 15 June 1869
Fate: Broken up, 1874
General characteristics
Class & type: Miantonomoh-class monitor
Displacement: 3,400 long tons (3,455 t)
Length: 258 ft 6 in (78.79 m)
Beam: 52 ft 9 in (16.08 m)
Draft: 14 ft (4.3 m)
Propulsion: 4 Martin boilers
Horizontal return connecting rod engine, 1,400 ihp (1,044 kW)
2 shafts
Speed: 10.5 knots (19.4 km/h; 12.1 mph)
Complement: 150 officers and men
Armament: 4 × 15 in (380 mm) smoothbore Dahlgren guns (2×2)
Armor: Side: 4.5 in (110 mm)
Turrets: 11 in (280 mm)
Pilothouse: 8 in (200 mm)
Deck: 1.5 in (38 mm)

USS Tonawanda was a double-turreted coastal monitor built by the Philadelphia Navy Yard, launched on 6 May 1864; and commissioned on 12 October 1865, Commander William Ronckendorff in command.

The Tonawanda was designed by Chief of Naval Engineering John Lenthall. Lenthall actually designed four monitors at that time. The Monadnock and the Agamenticus were the first and are considered the two Monadnock-class vessels. Lenthall altered the designs of the next two, the Miantonomoh and the Tonawanda and dubbed them the Miantonomoh-class. Because of the similarities between the two classes they are sometimes referred to collectively as the Miantonomoh-class.

The Tonawanda used powerful steam engines designed by Chief of Steam Engineering, Benjamin F. Isherwood. Her hull design was also much more streamlined than monitors designed by John Ericsson. Unfortunately, her internal frames were only 4.5 in oak and like Lenthall's Roanoke conversion, the weight of her turrets weakened the structural integrity of the hull and she was prone to rotting and cracking.

Service history[]

Completed too late for service in the Civil War, Tonawanda was decommissioned at the Washington Navy Yard on 22 December 1865. Reactivated on 23 October 1866 for duty as a training ship at the United States Naval Academy, she was serving in that capacity when she was renamed Amphitrite on 15 June 1869. Her assignment at Annapolis, MD ended in 1872, and she was taken to the Delaware River and broken up in 1873 and 1874 by the Harlan and Hollingsworth Co., Wilmington, DE under the guise of being "rebuilt" into a modern monitor. The completely new monitor that replaced her was also named Amphitrite, but shared nothing but the name with the older ship.


  • This article incorporates text from the public domain Dictionary of American Naval Fighting Ships. The entry can be found here.
  • Canney, Donald L. (1993). The Old Steam Navy: The Ironclads, 1842–1885. 2. Annapolis, Maryland: Naval Institute Press. ISBN 0-87021-586-8. 
  • Olmstead, Edwin; Stark, Wayne E.; Tucker, Spencer C. (1997). The Big Guns: Civil War Siege, Seacoast, and Naval Cannon. Alexandria Bay, New York: Museum Restoration Service. ISBN 0-88855-012-X. 
  • Silverstone, Paul H. (2006). Civil War Navies 1855-1883. The U.S. Navy Warship Series. New York: Routledge. ISBN 0-415-97870-X. 

This page uses Creative Commons Licensed content from Wikipedia (view authors).