abstract
| - Sinop was the first large warship to use vertical triple expansion steam engines, having two 3-cylinder engines imported from Napier & Son of the United Kingdom. Fourteen cylindrical boilers provided steam to the engines. The engines had a total designed output of , but they only produced on trials and gave a top speed of . At full load she carried of coal that provided her a range of at a speed of and at . She differed from her sisters mainly in the design of her gun mounts. Sinop had six Obukhov Model 1877 30-caliber guns mounted in twin barbette mounts, two forward, side by side, and one aft. Each of the forward mounts could traverse 30° across the bow and 35° abaft the beam, or a total of 155°. The rear mount could traverse 202°. Their rate of fire was one round every four minutes, thirty-five seconds, including training time. Sixty rounds per gun were carried. The main guns were mounted very low, (only ) above the main deck, and caused extensive damage to the deck when fired over the bow or stern. The seven Model 1877 35-caliber guns were mounted on broadside pivot mounts in hull embrasures, except for one gun mounted in the stern in the hull. Six of the eight five-barreled revolving Hotchkiss guns were mounted in small sponsons that projected from the hull with the aftermost pair mounted in hull embrasures to defend the ship against torpedo boats. Four five-barreled revolving Hotchkiss guns were mounted in the fighting top. She carried seven above-water torpedo tubes, one tube forward on each side, able to bear on forward targets, two other tubes were mounted on each broadside fore and aft of the central citadel; the seventh tube was in the stern.
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