Canonicus-class monitor

This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations. (February 2013) (Learn how and when to remove this message)

Mahopac on the Appomattox River, 1864
Class overview
Operators	United States Navy  Peruvian Navy
Preceded by	Passaic class
Succeeded by	Monadnock class
In commission	1864–1898
Completed	9
Lost	3
Scrapped	6
General characteristics
Type	Monitor
Displacement	2,100 long tons (2,100 t)
Tons burthen	1,034 tons (bm)
Length	235 ft (72 m) (Canonicus, Manayunk, Saugus) 225 ft (69 m) (Catawba, Oneota) 224 ft (68 m) (Tippecanoe) 223 ft (68 m) (Mahopac, Manhattan, Techumseh)
Beam	43 ft 8 in (13.31 m) (Canonicus, Manayunk, Saugus) 43 ft 3 in (13.18 m) (Catawba, Oneota) 43 ft (13 m) (Tippecanoe) 43 ft 4 in (13.21 m) (Mahopac, Manhattan, Techumseh)
Draft	13 ft 6 in (4.11 m) 11 ft 6 in (3.51 m) (Tippecanoe)
Installed power	4 × fire-tube boilers 320 ihp (240 kW)
Propulsion	1 × propeller 1 × vibrating-lever steam engine
Speed	8 kn (15 km/h; 9.2 mph)
Complement	85 officers and enlisted men
Armament	2 × 15-inch (381 mm) Dahlgren smoothbore guns
Armor	Gun turret: 10 in (250 mm) Waterline belt: 5 in (130 mm) Deck: 1.5 in (38 mm)

The Canonicus-class monitor was a class of nine monitors built for the Union Navy during the American Civil War. They saw service in the Civil War and the Spanish–American War, although two of them were never commissioned.

They were basically improved Passaics, modified in accordance with war experience. The four ships not commissioned during the war were built on the Ohio River, three at Cincinnati, and Manayunk as far up as South Pittsburgh.