Scottish Labour leader Iain Gray said he would fight to save the Clyde shipyards.
The long-term future of two British shipyards has been brought into question after a leaked memo reportedly showed plans which could see them close them within a decade.
Reports claim the memo was sent from the chief executive of the Govan and Scotstoun yards in Glasgow to senior executives at owners BVT Surface Fleet (BVT) which also has an operation in Portsmouth.