SS Vaterland was an ocean liner launched on 3 April 1913 and began service in 1914 for Germany's Hamburg America Line. The ship, second of three running mates and then the largest passenger ship in the world, made her first voyage to New York arriving on 21 May 1914 under the command of a Commodore and four Captains of the German Naval Reserve to celebrations featuring German and American officials at the line's Hoboken facilities.

A troopship is a ship used to carry soldiers, either in peacetime or wartime. Troopships were often drafted from commercial shipping fleets, and were unable to land troops directly on shore, typically loading and unloading at a seaport or onto smaller vessels, either tenders or barges.