 In 1807 Agamemnon was part of Admiral James Gambier 's fleet sent to take control of the Danish fleet before it could fall into French hands . She participated in the second Battle of Copenhagen , and as in the first in 1801 , ran aground . After she had come free , Agamemnon landed guns and shot in <unk> Bay to form part of a battery being established there to command the city . Firing commenced on 2 September , and lasted until the Danes surrendered on 7 September . In November , Agamemnon joined the blockading squadron off Lisbon . 
