HMS Blenheim was a 74-gun third rate ship of the line of the Royal Navy, launched on 31 May 1813 at Deptford Dockyard.

Her captain, Humphrey Fleming Senhouse, died on board Blenheim in the morning of 13 June 1841, from fever contracted during operations in Canton, China, in May 1841.

On 20 March 1847, Blenheim was in collision with the British brig Cactus in the River Thames and was driven ashore on the Essex bank.

Monkey assisted in beaching Agility on the Essex bank to prevent her from sinking.

In 1854–1855 Blenheim saw service in the Baltic Sea as a 60-gun steam screw vessel.