Unions said they expect a big turnout in Portsmouth on Saturday following last month's announcement that shipbuilding is to end.
More than 900 jobs will be lost, although Portsmouth will retain repairs and maintenance work.
Around 830 jobs will also be lost at yards in Govan and Scotstoun, on the River Clyde in Glasgow, at Rosyth in Fife, and at the firm's Filton office, near Bristol, as a result of a drop in work after the end of aircraft carrier work.
Unite national officer Ian Waddell said: "Portsmouth has 500 years of shipbuilding history, from the Mary Rose to HMS Dreadnought. The end of shipbuilding in Portsmouth will have tragic consequences for shipyard workers, their families and for future generations. We will be marching this Saturday to call on the Government and BAE Systems to do everything in their power to save shipbuilding jobs."