The Khrabryi class was a pair of ships of the line built for the Black Sea Fleet of the Imperial Russian Navy in the 1840s and early 1850s. The class comprised two ships: Khrabryi and Imperatritsa Maria. The two ships were built as part of a naval expansion program aimed at strengthening the Black Sea Fleet during a period of increased tension with Britain and France over the continued decline of the Ottoman Empire. Both ships saw active service during the Crimean War, with Imperatritsa Maria serving as Pavel Nakhimov's flagship at the Battle of Sinop in November 1853, where the Russians annihilated an Ottoman squadron. The two ships were withdrawn to Sevastopol after the British and French intervention and were trapped there during the Siege of Sevastopol until 1855, when both were scuttl