Passaic-class monitor
| USS Lehigh on the James River | |
| Class overview | |
|---|---|
| Builders | 
 | 
| Preceded by | USS Monitor | 
| Succeeded by | Canonicus class | 
| Subclasses | Uragan class | 
| In commission | 25 November 1862 – 1899 | 
| Completed | 10 | 
| Lost | 2 | 
| General characteristics | |
| Type | Monitor | 
| Displacement | 1,335 tons | 
| Tons burthen | 844 (bm) | 
| Length | 200 ft (61 m) overall | 
| Beam | 46 ft (14 m) | 
| Draught | 10 ft 6 in (3.20 m) | 
| Propulsion | 2 Martin boilers, 1-shaft Ericsson vibrating lever engine, 320 ihp (240 kW) | 
| Speed | 7 knots (13 km/h; 8.1 mph) | 
| Complement | 75 | 
| Armament | 
 | 
| Armor | 
 | 
The Passaic-class ironclad monitors of the U.S. Navy saw service in the U.S. Civil War and the Spanish–American War. The class was an improved version of the USS Monitor equipped with a 15-inch Dahlgren gun in place of one of the 11-inch guns.