Interesting! I did a little research on some of the warheads and pistols you mentioned, and I was rather surprised to find that some of them were fitted with net cutters!

About the T-IIIa torpedoes with the 17T batteries, do you have any idea as to when they were first introduced, and did they completely replace the older types?

Also, I take it that for whatever reason, the T-IV and V acoustic torpedoes were never fitted with the newer battery?

Thanks again!