"Haven of Rest" by Douglas Gurton says
"By my return late 1928 several large ships had already left for the breakers yards. ...
These were the liners NORMAN and GOORKHA of Union-Castle Line.
1925 replaced by the LLANDOVERY CASTLE on the Round Africa service, laid up in the River Blackwater off Tollesbury and broken up in 1926. [ from www.red-duster.co.uk/UNION8.htm ]
An item on http://union-castle.net/shipmates_Jamieson_Magnus_01.html describes Magnus Jamieson, a watchman from the NORMAN, being drowned. His body was found 9 April 1926 at Bradwell.
Essex Newsman 27 Feb 1927 reports three watchmen are missing from the Union Castle liners NORMAN CASTLE and GOORKHA which are laid up in the River Blackwater. Their names are Spence, Slesser and Jamiesen.
NORMAN was broken up Morecambe 29 Mar 1926 [from Miramar ship index].