The SS Ile de France was a French

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 ocean liner

Ocean liner

An ocean liner is a ship designed to transport people from one seaport to another along regular long-distance maritime routes according to a schedule. Liners may also carry cargo or mail, and may sometimes be used for other purposes .Cargo vessels running to a schedule are sometimes referred to as...

 built in Saint-Nazaire

Saint-Nazaire

Saint-Nazaire , is a commune in the Loire-Atlantique department in western France.The town has a major harbour, on the right bank of the Loire River estuary, near the Atlantic Ocean. The town is at the south of the second-largest swamp in France, called "la Brière"...

, France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 for the Compagnie Générale Transatlantique

Compagnie Générale Transatlantique

The Compagnie Générale Transatlantique , typically known overseas as the French Line, was a shipping company established during 1861 as an attempt to revive the French merchant marine, the poor state of which was indicated during the Crimean War of 1856...

. The ship was the first major ocean liner

Ocean liner

An ocean liner is a ship designed to transport people from one seaport to another along regular long-distance maritime routes according to a schedule. Liners may also carry cargo or mail, and may sometimes be used for other purposes .Cargo vessels running to a schedule are sometimes referred to as...

 built after the conclusion of World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

 and was the first liner ever to be decorated entirely with designs associated with the Art Deco

Art Deco

Art deco , or deco, is an eclectic artistic and design style that began in Paris in the 1920s and flourished internationally throughout the 1930s, into the World War II era. The style influenced all areas of design, including architecture and interior design, industrial design, fashion and...

 style. It was neither the largest ship nor the fastest ship, but was considered the most beautifully decorated ship built by the Compagnie Générale Transatlantique

Compagnie Générale Transatlantique

The Compagnie Générale Transatlantique , typically known overseas as the French Line, was a shipping company established during 1861 as an attempt to revive the French merchant marine, the poor state of which was indicated during the Crimean War of 1856...

 (CGT, known also as the "French Line") until the .
The construction of the Ile de France was part of the agreement between the CGT and the French government dating back to November, 1912.