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
Rosalind (1879 ship) Rosalind (1879 ship) SS "Rosalind" was a cargo ship built by Tyne Iron Shipbuilding of Willington Quay and launched in 1879. She operated as a cargo carrier based at Newcastle upon Tyne. In 1907, she was sold to a Swedish operator named N P Shensson and sailed the Baltic Sea until May 1918 when she was sunk by a mine. "Rosalind" was built by Tyne Iron Shipbuilding of Willington Quay on the north bank of the River Tyne, and launched in 1879. She was an steam=powered cargo ship with a schooner sailing rig, registered with a gross tonnage of and