"Mahmudiye" (1829), ordered by the Ottoman Sultan Mahmud II and built by the Imperial Naval Arsenal on the Golden Horn in Istanbul, was for many years the largest warship in the world. The ship of the line was armed with 128 cannons on three decks and was manned by 1,280 sailors. She participated in the Siege of Sevastopol (1854–1855) during the Crimean War (1854–1856). She was decommissioned in 1874.