Unions are due to meet bosses at BAE Systems today to fight plans to cut 940 jobs in Portsmouth.
Five centuries of shipbuilding will stop in the city from next year.
Work on the new eight hundred million pound aircraft carriers will move to Scotland - but the ships will be based in Portsmouth, with workers maintaining them.
1800 jobs will be cut in shipyards operated by BAE Systems across England and Wales, bringing shipbuilding in Portsmouth to an end.
Unions are to meet defence giant BAe Systems to discuss the future of the firm's three shipyards amid a review of its business.