Doxford and Sunderland Ltd's shipyard had a fleet of crane tanks.  This is HENDON, Stephenson & Hawthorn 7007, built 1940, seen at the shed in February 1972 during a visit by Durham University Railway Society.

Photo and scan by Les Richardson (les@cirsel.freeserve.co.uk)

http://www.cirsel.freeserve.co.uk/trains.htm