    {|    |} hms duncan was the fifth rn ship named after admiral adam duncan. she was a  of the royal navy that served in the cod wars. ==service== from her first commissioning in 1958 until 1965 duncan was the leader of the fishery protection squadron.she was involved in the first cod war between united kingdom and iceland over fishing rights, intervening between the icelandic coastguard and british trawlers. she was an escort to hmy britannia in august 1960. in 1964 she fired the salute at the opening of the new forth road bridge. she also visited nantes in 1961, oslo and reykjavÃ­k in 1963, and copenhagen in 1965. she was given the freedom of the city of hull for the part she played in the cod wars. in 1966 she completed an extensive modernisation at rosyth naval dockyard and in the following year attended portsmouth navy days.programme, navy days portsmouth, 26th-28th august 1967, hmso, p15. in 1970 she was again present at portsmouth navy days, by this time she was part of the portland training squadron.programme, navy days portsmouth, 29th-31st august 1970, hmso, p23. during the early 1980s, hms duncan served alongside  as harbour training ship at rosyth dockyard for the marine engineering artificer apprentices from
1957_ships Blackwood-class_frigates Ships_of_the_Fishery_Protection_Squadron_of_the_United_Kingdom