I'm home now, did some searching, here's the result:
Explosive powers:
http://www.geocities.com/Pentagon/1592/ustorp3.htm
Mk 14 (Mod 3A) 660Lb Torpex steam 4.500yds @ 46,3 kts
Mk 16 (Mod 1) 920Lb Torpex 11.000yds @ 46.2kts
Mk 18 575Lb Torpex Elect 4000yds @ 29 kts
http://www.microworks.net/pacific/ar..._submarine.htm
Mk 10 497Lb TNT steam 3500 yds @ 36 kts
http://www.ssbn608.org/mk14_torpedo.htm
Mk 14 643 Lb Torpex steam 4500 yds @ 46 kts/ 9000 yds @ 31 kts
http://www.bergall.org/320/patrol/torpedo.html
Mk 14 643Lb HBX (interestingly it says "Exploder Mk 6 Mod 13 Contact" -no magnetic mentioned)
Mk 18 (mod 3) 575Lb HBX 4000 yds @ 29 Kts (exploder was either the Mk8 (contact) OR Mk9 (contact/influence)
Mk 23 (mod 6) 643 Lb HBX 4500 yds @ 46,3 kts (Contact)
Mk 27 Electric propulsion, active acoustic homing. (I think this should read passive acoustic homing)
http://www.fleetsubmarine.com/torpedoes.html
Mk 27 95 Lbs warhead
http://www.navweaps.com/Weapons/WTUS_WWII.htm
Mk 10 497 lb TNT
Mk 14 643 lb Torpex
Mk 16 943 lb Torpex
Mk 18 575 lb Torpex
Mk 23 643 lb Torpex
Mk 27 95 lb Torpex !!!!
The readings in the files concerning patch 1.2 were not corresponding with the figures mentioned above (imho).
The truth is, for the life of me, I can't find the Torpedo_US.zon file in patch 1.3 so maybe this info about the torpedoes is in another file.
EDIT: Disregard, found the torpedo_us.zon file. (had to reinstall the whole bunch again....)