Graham, there have been a series of Glasgow Corporation sludge vessels sharing the same name over the years, and their history might be of interest to some...?
Rather than take up space posting the full link and associated data, if interested if you type in the missing https. to the front of the link below, hopefully you might then have access to more accurate info.
//ss-shieldhall.co.uk/the-ship/history-of-the-glasgow-sludge-fleet/
