Was This Paul's Yellow Submarine?

In my September 28th. (2012) post, I talked about Los Angeles radio station KRLA's magazine article that hinted that our Paul's hometown was Leeds, England.  This led to the idea that the B/Featles' Magical Mystery Tour film comment about "the bus being ten miles north on the Dewsbury Road" might have been a reference to our Paul.

I was reading a book called Yorkshire West Riding written in 1950 by Lettice Cooper.  She was talking about Huddersfield, West Riding, which is ~ 21 miles southwest of Leeds.  (See map on right.)  On page 132 she said:  "During the second German War, when she [Huddersfield] was happily untouched by air-raids, she produced an enormous quantity of munitions of all kinds, even turning out midget submarines, fitted to the last detail and complete with crews."

   At the top left is a photo of the HMS Expunger XE8 that was made by the manufacturer Broadbent in Huddersfield in 1944.  At the top right is an image of the famous "yellow submarine." 

When Paul wrote the song, was he making reference to a little of his past in Yorkshire, West Riding?