be heavier than the older ship's barbette and made Imperator Nikolai I slightly bow-heavy despite a reduction in the height of the belt armor in compensation. Description Imperator Nikolai I was long at the waterline and long overall. She had a beam of and a draft of , more than designed. She displaced at load, over more than her designed displacement of . Imperator Nikolai I had two triple-cylinder vertical compound steam engines, each driving a single propeller. Twelve cylindrical boilers provided non-superheated steam to the engines. They were built by Baltic Works and had a total designed output of . On trials, the powerplant produced a total of , and a top speed of . She carried of coal that gave her a range of at a speed of . The main armament of the Imperator Aleksandr II-class ships was a pair of Obukhov Model 1877 30-caliber guns. Imperator Nikolai I carried hers in a twin-gun turret forward. The four Obukhov Model 1877 35-caliber guns were on center-pivot mounts in casemates at the corners of the citadel, the hull given a pronounced tumblehome to increase their arcs of fire ahead and behind. The eight Model 1877 35-caliber guns were mounted on broadside pivot mounts. Four were fitted between the 9-inch guns and could traverse a total of 100°. The others were mounted at each end of the ship where they could fire directly ahead or astern. The ten Hotchkiss revolving cannon were mounted in hull embrasures of the ship, between the nine and six-inch guns to defend against torpedo boats. Four Hotchkiss revolving cannon were mounted in each fighting top. Imperator Nikolai I carried six above-water torpedo tubes. One was in the bow, two tubes were on each broadside and a tube was in the stern. Most of Imperator Nikolai Is armor was imported from the United Kingdom and some deliveries were delayed which caused problems during construction. The height of the waterline armor belt was reduced in comparison to that of her half-sister, being tall, of which was above the designed waterline and below. Most of the rest of the protection matched that of Imperator Aleksandr II other than the waterline belt forward which only reduced to a minimum of six inches rather than the of the older ship and the walls of the conning tower were only six inches thick, less than her half-sister. History Imperator Nikolai