A total of of carpet, 220 cases of china, crystal and silver services, tapestries, and paintings were removed and stored in warehouses for the duration of the war. The woodwork in the staterooms, the cabin-class dining room, and other public areas was covered with leather. "Queen Mary" and "Queen Elizabeth" were the largest and fastest troopships involved in the war, often carrying as many as 15,000 men in a single voyage, and often travelling out of convoy and without escort. Their high speed and zigzag courses made it virtually impossible for U-boats to catch them.