My first ship, the m.v. Clan MacIver, c/s GXBX, keel laid December 1958, was Doxford powered...
http://en.wikipedia.org/wiki/William_Doxford_%26_Sons
my uncle worked at the Doxford engineering yard (Pallion Sunderland) for 40 years, as a Fitter & Turner, once on a visit to the Yard as a child i was placed in a Piston that was stud upside down, around about 8yrs old i guess i would be 3-4ft and could just say see over the top of what would of been the bottom edge. one of my finest memories of living in this out back area, is watching the ships been launched, especially as my Grandad was the name Painter on the sides of the Vessels, but took over/time when the Launches were on, we got ring side standing as it were. MAJIC