She saw action during the unsuccessful Battle of Toulon and was present during the great naval disaster off the Isles of Scilly when Shovell and four of his ships (Association, Firebrand, Romney and Eagle) were lost, claiming the lives of nearly 2,000[7] sailors.

[3] On 7 September 1739 Monmouth was ordered to be taken to pieces and rebuilt for what was to be the final time at Deptford according to the 1733 proposals of the 1719 Establishment.

[10] After Monmouth's commander, Captain Arthur Gardiner (formerly Byng's flag captain),[11] was severely wounded by a strike of grape shot on the forehead and taken below deck, the four ship's lieutenants (Robert Carkett, David Winzar, Stephen Hammick and Lt Campbell) continued the battle.

The dead, including Captain Gardiner, were buried at sea near Cape de Gata on the afternoon of Saturday 4 March.

After a hundred years of service, she was finally broken up in 1767; a newspaper of the time gave her epitaph as There was no ship she ever chased that she did not overtake: there was no enemy she ever fought that she did not capture.