So i chose the Tambor class sub USS Trout for my first career patrol, after sinking 5 merchant ships, and down to only 4 torpedoes, came across a huge taskforce of 3 Ise-Class Battleships, 4 Cruisers and 4-5 Destroyers, fired a salvo of 4 torpedoes (2 contact, 2 magnetic charge). Contacts were duds, but the two magnetic charge torpedoes were enough to sink this beast. Sank in seconds after listing to port and rolled over like a barrel.
Then i dived to 80 meters and got out of there as discreetly as possible.