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
Bungsberg (ship) and after mast are missing, as are the upper structures of her bridge. Damage from the mine explosion is clearly visible on her starboard bow. All four of her cargo holds are empty. Some papers retrieved from "Bungsberg"′s wreck and her engine order telegraph are kept at the Estonian Maritime Museum in Tallinn, Estonia. Bungsberg (ship) Bungsberg (originally named Eva, factory body number 646) was a cargo ship built in 1924 at Howaldtswerke in Hamburg, Germany, for China Reederei AG. She had three sister ships: "Bungsberg" was sunk in Tallinn Bay off the Soviet Union′s Estonian Soviet Socialist Republic on