Naval mine ship, HMHS "Britannic", which was the sister ship of the RMS "Titanic." During World War II, the U-boat fleet, which dominated much of the battle of the Atlantic, was small at the beginning of the war and much of the early action by German forces involved mining convoy routes and ports around Britain. German submarines also operated in the Mediterranean Sea, in the Caribbean Sea, and along the U.S. coast. Initially, contact mines (requiring a ship to physically strike a mine to detonate it) were employed, usually tethered at the end of a cable just below the surface of the
Sinking of the RMS Titanic sight the awful spectacle ... Then, with the deadened noise of the bursting of her last few gallant bulkheads, she slid quietly away from us into the sea." "Titanic"s surviving officers and some prominent survivors testified that the ship had sunk in one piece, a belief that was affirmed by the British and American inquiries into the disaster. Archibald Gracie, who was on the promenade deck with the band (by the second funnel), stated that ""Titanic"s decks were intact at the time she sank, and when I sank with her, there was over seven-sixteenths of the ship already under water,