Rosehill

The SS Rosehill, formerly known as the Minster, was a 2,788-ton armed merchant steamship requisitioned as a collier by the Admiralty during the First World War and torpedoed without warning by U-40 on 23 September 1917. She lies at the western end of Whitsand Bay, near Plymouth, at approximately 29–30 m, upside down and sitting close to the seabed. The boilers are the most prominent feature, rising to around 24 m, and are the most useful target on an echo sounder. Other clearly visible features include a stern gun, rudder, steering gear and part of the propeller. A parallel reef runs alongside the wreck and is frequently mistaken for it, creating a more complex dive area than it first appears.

Marine life on the wreck is varied: large shoals of bib, cod, bass and pollack move through the site, and large congers shelter beneath the jumble of plates. All five UK wrasse species are present, including rock cook families around the boilers. The wreck plates are draped in sea fans and dead men's fingers, and the adjacent reefs also hold large populations of sea fans.

The site can be dived at any state of the tide, though this also means it is quite silty. Because it is diveable on all tides, visibility can be reduced, and divers should expect soft sediment disturbance. The wreck is rated advanced and is a boat dive, reached via the coordinates 50°19.80 N, 4°18.53 W.