It became the title song of the 1968 animated United Artists film, also called Yellow Submarine, and the soundtrack album to the film, released as part of the Beatles' music catalogue. Although intended as a nonsense song for children, Yellow Submarine received various social and political interpretations at the time.he song began as being about different coloured submarines, but evolved to include only a yellow one. In 1980, Lennon talked about the song: 'Yellow Submarine' is Paul's baby. Donovan helped with the lyrics.