Miantonomoh-class monitor

USS Miantonomoh in Washington Navy Yard, 1865
Class overview
Name	Miantonomah class
Operators	United States Navy
Preceded by	Canonicus class
Succeeded by	USS Dictator
Subclasses	Agamenticus, Miantonomah, Tonawanda
Built	1862–1865
In service	1864–1872
Completed	4
Scrapped	4
General characteristics
Type	Monitor
Displacement	3,400 long tons (3,455 t)
Length	258 ft 6 in (78.8 m)
Beam	52 ft 9 in (16.1 m)
Draft	12 ft 8 in (3.9 m)
Installed power	4 × Martin boilers 1,400 ihp (1,000 kW)
Propulsion	2 × shafts; 2–4 × steam engines
Speed	9–10 knots (17–19 km/h; 10–12 mph)
Complement	150–167
Armament	2 × twin 15 in (380 mm) smoothbore Dahlgren guns
Armor	Side: 4.5 in (114 mm) Gun turrets: 11 in (279 mm) Deck: 1.5 in (38 mm) Pilothouse: 8 in (203 mm)

The Miantonomoh class consisted of four monitors built for the Union Navy during the U.S. Civil War, but only one ship was completed early enough to participate in the war. They were broken up in 1874–1875.