Windsor Castle was a wooden-hulled, three-masted sailing ship that was built in England in 1857 and wrecked off the coast of Cape Colony in 1884.

William Pile built Windsor Castle in his North Shore shipyard in Sunderland, launching her on 12 March 1857 and completing her that May.

[4] After she was extensively overhauled in July 1882, the government[clarification needed] sometimes chartered the ship to transport troops to Zanzibar and Sydney.

[5][6] In 1884 Windsor Castle was sailing from Cochin to London when a cyclone on 27–28 June washed the third officer overboard and swept away her rudder.

Her remaining crew of 21 men then set her afire, abandoned her 35 nautical miles (65 km) off the coast of Algoa Bay, Cape Colony.