Although Glasgow's history as a major shipbuilding city made it a prime target for the German "Luftwaffe", and despite the Clydebank Blitz, the yard made a valuable contribution in the Second World War, building and repairing many battleships including the notable and highly successful . The first few years after the war saw a sudden reduction in warship orders, but it was balanced by a prolonged boom in merchant shipbuilding to replace tonnage lost during the war. The most notable vessels built in this period were the and the royal yacht .