Alarm was a lugger that the British Royal Navy acquired from the Commissioners of Customs in 1810. She made one small capture before the Navy returned her to Customs in 1812.

In 1811 Lieutenant Robert Forbes was appointed to command Alarm at Leith.Naval Chronicle, Vol. 25, p.172. On 25 June he captured the Danish sloop Emanuel, Svend Torgenson, master. He brought her into Leith on 1 July.Lloyd's List №4577. Accessed 7 December 2016.

Alarm was returned to Customs in 1812.

NB: The National Maritime Museum database refers to Alarm as a hired lugger, and gives a service period of 1810–1813.

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