The mystery ship is the turbine steamer Dramatist, built in 1920 by Charles Connell and Co Ltd at Scotstoun for the Charente Steamship Co Ltd, managed by T. & J. Harrison of Liverpool. She carried general cargo on Harrison Line’s routes, mainly to East Africa and India. Dramatist worked for Harrisons until she was broken up at Briton Ferry in Wales in 1949 by T. W. Ward Ltd. She had at least four near sisterships: Traveller, Scholar, Auditor and Historian, all fitted with steam-reciprocating engines. The details that convince me the photo shows Dramatist rather than one of these are the prominent cowl top to her funnel and the steam pipe on the fore side of the funnel, which is almost as tall as the funnel itself.Roy Fenton, Wimbledon