HMS Calcutta was an 84-gun second-rate ship-of-the-line of the Royal Navy, built in teak to a draught by Sir Robert Seppings and launched on 14 March 1831 in Bombay.

[3] In 1855 the ship had been in reserve, but was recommissioned due to the Crimean War and sailed for the Baltic.

[4] She saw action in the Second Opium War as the flagship of Rear Admiral Sir Michael Seymour, under the command of Captain William King-Hall.

[3] After returning to home waters, Calcutta was placed back into reserve at Devonport, Devon.

In 1865, she was moved to Portsmouth where she served as an Experimental Gunnery Ship, moored ahead of HMS Excellent.