HMS Polyphemus

Three ships of the British Royal Navy have been named HMS Polyphemus, after the Polyphemus of Greek mythology.

• HMS Polyphemus (1782) was a 64-gun third rate launched in 1782, active in the Napoleonic Wars, converted to a powder hulk in 1813 and broken up in 1827.
• HMS Polyphemus (1840) was a wooden paddlewheel sloop launched in 1840 and wrecked off Jutland in 1856.
• HMS Polyphemus (1881) was a torpedo ram in use from 1881 to 1903.
• The Town-class cruiser HMS Southampton of 1936 was named Polyphemus during construction.
• HMS Polyphemus was to have been an Centaur-class aircraft carrier of 18,300 tons, 650 ft long, but was cancelled in October 1945.