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
Fishing in the North Sea the 19th century large quantities of herring were produced in Scotland. Today mainly mackerel, Atlantic cod, whiting, coalfish, European plaice, and sole are caught. In addition, common shrimp, lobster, and crab, along with a variety of shellfish are harvested. In recent decades, overfishing has left many fisheries unproductive, disturbing the marine food chain dynamics and costing jobs in the fishing industry. Herring, cod and plaice fisheries may soon face the same plight as mackerel fishing which ceased in the 1970s due to overfishing. Since the 1960s, various regulations have attempted to protect the stocks of fish such as limited fishing