Heibetnuma was an unprotected cruiser[citation needed] with a composite hull of the Ottoman Navy, laid down in 1881 at the Constantinople dockyard and completed in 1893. The ship had six rectangular boilers and carried about 280 tons of coal. The main armament was three Krupp 6.7in/25 caliber 5.6 ton breechloading guns, mounted fore and aft. The secondary guns were six Krupp 4.7in/25 BL guns in sponsons amidships.