History of the Royal Navy the GIUK gap. In the North Atlantic, the United Kingdom became engaged in a protracted dispute with Iceland over fishing rights. The Royal Navy, supported by tugs from the MAFF and British civilian trawlers, was involved in three major confrontations with the Icelandic Coast Guard from 1958 to 1976. These largely bloodless incidents became known as the Cod Wars, and ended with the recognition by Britain of Iceland's exclusive 200 nautical miles fishery zone. Chatham Naval Base was used for refitting nuclear submarines from 1963 but it closed in 1984. The most important operation conducted predominantly by the Royal Navy
Cod fishing in Newfoundland had decreased by at least 75% in all stocks, by 90% in three of the six stocks, and by 99% in the case of 'northern' cod, previously the largest cod fishery in the world. After a 10-year moratorium on fishing begun in 1992, the cod had still not returned. It was thought that the local ecosystem might have changed, one possibility being that greater numbers of capelin, which used to provide food for the cod, might be eating the juvenile cod. The waters appeared to be dominated by crab and shrimp rather than fish. However, by 2011 it became apparent