The United States Navy Military Sealift Command's dry cargo ship USNS Wally Schirra departs Hanwha Ocean shipyard after a seven-month overhaul at Gyeongsangnam-do, South Korea, on March 12 ...

But it's not always size that matters. The Navy uses plenty of other ships that aren't on such a grand scale, but this doesn't make them any less impressive — or important. Some ships are only ...