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
Queen of the Mississippi (2015 ship) Like her sister ship, all have private baths, windows, Wi-Fi, and interior entrances. The ship deck plans: "Queen of the Mississippi" entered service in 2015, joining her sister boat "American Pride". American Cruise Lines has not said if the name change to "Queen of the Mississippi" is permanent or temporary until the previously announced replacement vessel for "American Pride" launches in 2017. Her stern-mounted paddlewheel is driven by a hydraulic motor, powered by diesel engines. This is augmented by two Z-drive units to provide a higher cruising speed and better maneuverability. Queen of the Mississippi (2015 ship) Queen of the