While on patrol with the 64-gun and the frigate , "Temeraire" became involved in one of the heaviest Danish gunboat attacks of the war. A party of men from "Ardent" had been landed on the island of Romsø, but were taken by surprise in a Danish night attack, which saw most of the "Ardent" men captured. The "Melpomene" was sent under a flag of truce to negotiate for their release, but on returning from this mission, was becalmed. A flotilla of thirty Danish gunboats then launched an attack, taking advantage of the stranded "Melpomene"s inability to bring her broadside to bear on them. "Melpomene" signalled for help to the "Temeraire", which immediately dispatched boats to her assistance. They engaged and then drove off the Danish ships, and then helped the "Melpomene" to safety. She had been heavily damaged and suffered casualties of five killed and twenty-nine wounded. "Temeraire"s later Baltic service involved being dispatched to observe the Russian fleet at Reval, during which time she made a survey of the island of Nargen. After substantial blockading and convoy escort work, "Temeraire" was ordered back to Britain as winter arrived, and she arrived in Plymouth in November 1809.