HMS Defiance was a 74-gun third rate ship of the line of the Royal Navy, built by Randall and Co., at Rotherhithe on the River Thames, and launched on 10 December 1783.

The Spithead and Nore mutinies were two major mutinies by sailors of the Royal Navy in 1797. They were the first in an increasing series of outbreaks of maritime radicalism in the Atlantic World. Despite their temporal proximity, the mutinies differed in character. The Spithead mutiny was a simple, peaceful, successful strike action to address economic grievances, while the Nore mutiny was a more radical action, articulating political ideals as well, which failed.