They had a range of about 1,200–1,500 nautical miles (2,200–2,800 km; 1,400–1,700 mi) at a speed of 9 knots (17 km/h; 10 mph) and were fitted with a light fore-and-aft sailing rig to steady them and aid in maneuvering.

[1] The monitors were originally designed to be armed with six 20-caliber Obukhov 11-inch (279 mm) rifled muzzle-loading guns, a pair in each Coles-type turret.

During the Russo-Turkish War of 1877–1878, a 9-inch mortar was fitted to attack the thin deck armor of enemy ships, but accuracy was poor and it was later removed, probably in the early 1880s.

She was launched on 21 September and then transferred to Kronstadt for fitting out as the shallow waters around Saint Petersburg prevented deep-draft ships from being completed.

This added more delays as the dockyard there lacked the equipment to efficiently fit out the ships, and she officially entered service in 1872 at the cost of 1,289,300 rubles.

[7] The accident prompted an investigation that concluded that the quality control of the riveting and caulking of the watertight bulkheads needed to be improved and it recommended testing that by flooding the interior compartments during construction.

[10] She was reclassified as a coast-defense ironclad on 13 February 1892 and frequently served with the Artillery Training Detachment of the Baltic Fleet.

The ship was stricken on 14 August 1907[11] although one naval architect proposed a conversion into a flush-decked aircraft carrier in July 1910.

[12] Although perfectly feasible given the low take-off and landing speeds of the aircraft of the day, the proposal was not accepted, possibly because it would have been relatively expensive at a time when the Naval Ministry was struggling to finance the Gangut-class dreadnought battleships and other modern ships.