The policy would see EU boats as far away as France's Bay of Biscay attacked by British warships. The 200 miles exclusion zone would also include a number of EU capitals and major cities such as Paris, Brussels, Amsterdam, and Dublin.
Robert Rowland, an MEP for South East England, said EU vessels that entered the exclusion zone would be "given the same treatment as the Belgrano" - an Argentinian warship that was torpedoed by a British submarine during the Falklands War with the loss of 323 lives.
"We are behind all our fisherman and the restoration of sovereignty over our waters. 200 miles of exclusion zone with any foreign fishing vessel given the same treatment as the Belgrano!" he said in a post on Twitter.
The proposal immediately attract derision and criticism from other MEPs and fishermans' groups.
Chris Davies, a Liberal Democrat who was recently elected as chair of the European Parliament’s fisheries committee, said Mr Rowlands comments marked a new low.
“Even as hyperbole they are shameful and sickening,” he said. “No doubt the Brexit Party will claim that it was never the intention to call for European fishermen to be murdered.
"But words matter. Words can calm and promote understanding, or they can inflame and inspire hatred. The Brexit Party is making it clear where it stands, and its position is vile."
The National Federation of Fishermen’s Organisations also condemned the comments, stating that after Brexit they expected an agreement to be put in place to allow EU vessels to have access to British waters.
The sinking of the ARA General Belgrano on 2 May 1982 is one of the most controversial incidents in recent British military history. The sinking was personally ordered by then prime minister Margaret Thatcher and it is disputed whether the vessel was returning to port at the time it was attacked.
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