Plumper was commissioned in October 1804 under the command of Lieutenant James Henry Garrety. In July 1805
Plumper, together with her sister-ship , were part of the Royal Navy force blockading the coast of northern France. On 15 July the two gun-brigs were off
Granville, Manche when they became becalmed. To avoid the tide carrying them onto the coast, the two anchored in the afternoon off
Chausey. A heavy fog came up and at 2:30 am on 16 July, several French vessels were seen to emerge from the darkness.
Plumper attempted to get closer to
Teazer so that they could support each other, but was unable to so. The French force, which consisted of six brigs, a schooner, and a ketch, stood off and battered
Plumper with their guns.
Plumper returned fire, but being armed primarily with cannonades, was outranged. During the exchange of fire, Garrety had an arm shot off, a leg crippled by grapeshot, and a piece of
langrange lacerated his chest. Four seamen were also wounded. After an hour, Sub-Lieutenant Richards, who had taken over command after Garrety had been taken below,
struck. Later, some of
Plumpers crew accused Richards of having too quickly surrendered. After daybreak, the French also captured
Teazer. They then took both their prizes into Granville, with
Plumper being in a sinking state. ==French Navy==