So glad to receive your questions, sir - and so sorry not (yet) to have any answer(s) for you - indeed my "pay grade" on the subject is so low that I've had considerable difficulty just finding exterior drawings, etc., sufficient to build my own (relatively undetailed) T-class sub models.

The Good News is that this situation forces me to engage pretty heavily in poring over historical reference photos - one or (hopefully) more of which, sooner or later, should (at least begin to) provide some clues. (Just as I was able to eke out for USN S-type subs.)

I haven't yet visited your linked article (Thank You) before posting this reply (sorry for the delay already), but if you (or anybody) can share with us any or all sources for historical pics of the RN T-class(es), that could immediately help to "Put more Eyes on the Target" in pursuit of the answers you seek, sir.

Meantime, again Thanks and Welcome Aboard, Peter!


Cheers,

- Matt
LIstOwner, http://www.ModelFleet.com