The extraordinary tale behind the warship that inspired one of Turner's most famous paintings. It is a story that unites the art of war as practised by Nelson with the art of war as depicted by Turner and, as such, it ranges across an extensive period of Britain's cultural and military history in ways that other stories do not. The result is a detailed picture of British maritime power at two of its most significant peaks in the age of sail: the climaxes of both the Seven Years' War (1756-63) and the Napoleonic wars (1798-1815).