A hospital ship is a ship designated for primary function as a floating medical treatment facility or hospital. Most are operated by the military forces of various countries, as they are intended to be used in or near war zones. In the 19th century, redundant warships were used as moored hospitals for seamen.
United States Navy hospital ship USNS Comfort in 2009.
Tangier circa 1670. Hospital ships were used during the evacuation of the port in the 1680s.
HMS Melbourne, the first modern hospital ship, served during the Second Opium War. Excerpt from The Illustrated London News about the ship (click to read).
RMS Mauretania as hospital ship HMHS Mauretania during World War I.
HMS Grampus was a 50-gun fourth-rate ship of the line of the Diomede class of the Royal Navy. She was launched in 1802
H.M.S. Grampus lying off Deptford Creek, Greenwich