and Bismarck) were divided between the Cunard Line, White Star Line, and the United States Lines, while the three surviving ships of the Kaiser class were requisitioned by the US Navy in the context of the conflict and then retained. The Tirpitz, whose construction was delayed by the outbreak of war eventually became the . Of the German superliners, only Deutschland, because of her poor state, avoided this fate. After World War I After a period of reconstruction, the shipping companies recovered quickly from the damage caused by the First World War. The ships, whose construction was started before the war, such as of the French Line, were completed and put into service. Prominent British liners, such as the Olympic and the Mauretania, were also put back into service and had a successful career in the early 1920s. More modern liners were also built, such as (completed in 1927). The United States Lines, having received the Vaterland, renamed her Leviathan and made her the flagship of the company's fleet. Because all U.S. registered ships counted as an extension of U.S. territory, the National Prohibition Act made American liners alcohol-free, causing alcohol-seeking passengers to choose other liners for travel and substantially reducing profits for the United States Lines. In 1929, Germany returned to the scene with the two ships of Norddeutscher Lloyd, and . Bremen won the Blue Riband from Britain's Mauretania after the latter had held it for twenty years. Soon, Italy also entered the scene. The Italian Line completed and in 1932, breaking the records of both luxury and speed (Rex won the westbound Blue Riband in 1933). France reentered the scene with of the French Compagnie Générale Transatlantique (CGT). The ship was the largest ship afloat at the time of her completion in 1932. She was also the fastest, winning the Blue Riband in 1935. A crisis arose when the United States drastically reduced its immigrant quotas, causing shipping companies to lose a large part of their income and to have to adapt to this circumstance. The Great Depression also played an important role, causing a drastic decrease in the number of people crossing the Atlantic and at the same time reducing the number of profitable transatlantic voyages. In response, shipping companies redirected many of their liners to a more profitable cruise service. In 1934, in the United Kingdom, Cunard Line and White Star Line were in very