The Royal Navy Research Archive General Message Board
For more discussion boards, grouped by topic, visit the new RN Research Archive forum - Click here
TAY was a 'River' class frigate.
See:
http://www.uboat.net/allies/warships/ship/93.html
and also:
http://www.redcar-cleveland.gov.uk/museums.nsf/WebFullList/CBD0C4AE8183CDF48025745D003964B8?OpenDocument
The fact that it appears after another name was quite normal for a 'small ship'; it meant that the first named ship (actually usually a shore base)was responsible for admin/pay etc.
LSE.52 was a 'Landing Ship, Emergency Repair'.
A number of Tank Landing Ships (LST) were converted to repair ships, with the tank decks fitted out as repair ships, equipped to undertake work on engines, shafts, propellers etc.