History of the North Sea United Kingdom and Germany signed the Treaty of Heligoland. The Cod War of 1893 erupted between Denmark and Britain over fishing territories. Denmark declared a fishing territory of 13 nautical miles (24 km) around their shores which included Iceland and the Faroe Islands. Britain did not acknowledge this claim. Tensions in the North Sea were again heightened in 1904 by the Dogger Bank incident, in which Russian naval vessels mistook British fishing boats for Japanese ships and fired on them, and then upon each other. The incident, combined with Britain's alliance with Japan and the Russo-Japanese War led to an
Cod Wars passage of Soviet submarines while the Royal Navy was threatened by further serious defence and naval cuts by the Royal Navy's chief "bête noire", the Chancellor of Exchequer and former Minister of Defence, Denis Healey. The Royal Navy saw its strategic aim at the time to be as much as fighting Healey as the Soviet Navy. The Second and Third Cod Wars were necessary wars for the Royal Navy, like the Falklands Operation, six years later. To Crosland, also MP for the trawler port of Grimsby, the third war was a more serious threat to the Western Alliance than the