The first ''Orion'' was a 74-gun Ship Of The Line launched in 1787 and broken up in 1814 . She fought at five battles during the French Revolutionary and Napoleonic Wars, including the Nile and Trafalgar .
The second ''Orion'' was an 80-gun screw ship in service from 1854 to 1867 .
The third ''Orion'' was an armoured Corvette purchased from Turkey and launched in 1879 , renamed or ''Orontes'' in 1909 , and sold in 1913 .
The fourth ''Orion'' was a Cruiser projected in 1904 but never built.
