HMS Seagull was the name vessel for the Seagull class of brig-sloops of the Royal Navy. She was launched on 1 July 1805 and saw active service under the British flag in Danish waters until 19 June 1808 when Dano-Norwegian forces sank her. The Danes raised her and refitted her for service in the Dano-Norwegian Navy, which she served until the end of the English Wars in 1814. She then was transferred to the Norwegians. She was finally decommissioned in 1817.

HDMS Lougen was a Danish naval brig launched in 1805. She saw service in the Danish navy and participated in two notable actions against the British Royal Navy during the Gunboat War. In 1814, as a result of the Treaty of Kiel, the Danes transferred her to the Norwegian navy. The Norwegians sold her to German merchants in the Scheld in 1825. She was finally shipwrecked near Bremerhaven in 1881.