HMS Opal (1875)
 HMS Opal was an Emerald-class corvette of the Royal Navy laid down as Magicienne and built by William Doxford & Sons Ltd Sunderland and launched on 9 March 1875.She was completed with an armament of 14 64-pounder muzzle-loading rifled guns (2 on bow and stern chasers mounted on centre-line swivelling slides and 12 on broadside slide mountings) and initially commenced service on the Pacific Station and while on passage in 1876 hit a rock in the Strait of Magellan.