sentences:  It was then used partly as a military base and partly as a prison for Finnish prisoners.During the Crimean War, British HMS "Arrogant" and HMS "Magicienne" on July 7, 1855 under the command of Captain Hastings Yelverton came up to the fortress.As soon as the British squadron appeared, the fortress was evacuated by the Russians and its armament removed, Captain Yelverton blew up everything that remained.