Carl,
This is a topic I have interest in as well.
There is the very fine history of Coastal Command with data tables
http://www.amazon.com/Forgotten-Offe.../dp/0714641472
There is this for German operations but there are no source notes:
Luftwaffe Aerial Torpedo Aircraft and Operations in World War Two
By Harold Thiele
Artwork by Tim Brown
Hikoki
96 pages, 5 color profiles
Do not know about Japanese, Italian, USAAF,USN. I suspect Airwar Pacific by Eric Hammel for the PTO might have the information but one has to tally the sorties involving torpedoes.
NB: I should add that for ETO and MTO the very fine chronologies by Shores, Cull,etc. detail sorties with detail on the type of weapons used-torpedoes or bombs. You know there are many to go through depending on theater and time of year.
I have a copy of Not by Courage Alone or similar regarding the Italian Air Force and it is not detailed. There are Italian Official Histories on aerial operations which are multi-volume.