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
Chinese hospital ship Daishan Dao and communications system to allow teleconferencing with doctors and specialists on land. In accordance with the Geneva Conventions, "Daishan Dao" and her crew do not carry any offensive weapons, while the ship is painted white with red crosses to mark it as a hospital ship. Chinese hospital ship Daishan Dao Daishan Dao is a Type 920 hospital ship of the People's Liberation Army Navy of the People's Republic of China. "Daishan Dao" is also known as "Peace Ark" during peace time. The ship was launched in 2007 with the stated intention of giving China a platform to provide a better