The Royal Navy submarine B11, date unknown but after 1906. On the morning of 13 December 1914 it was commanded by Lieutenant Norman Holbrook when it sank the Turkish battleship, Messudiye, off Çanakkale in the Narrows of the Dardanelles. The B11 was the last of the British B class submarines to be built between 1904 and 1906. It was eventually converted to a patrol boat and sold for scrap in 1919.