HMS Duncan (F80) HMS Duncan (F80) 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. 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 the royal yacht in August 1960. In 1964 "Duncan" fired the salute at the opening of the new Forth Road Bridge. The frigate also visited Nantes
USS Cod use the same vertical ladders and hatches that were used by her crew. Cleveland can claim partial credit as "Cod"'s birthplace, since the submarine's five massive diesel engines were built at the General Motors Cleveland Diesel plant on Cleveland's west side. In addition, she also has unique attractions such as the 5 inch deck gun that still can be rotated by visitors and mock fired by "Cod"s volunteer crew. The "Cod" 's Mark IV Torpedo Data Computer is also fully restored, as well as other various parts on the submarine. The "Cod" memorial acquired two General Motors Model 248 engines