Think I'm getting down a counter Kaibokan D (thrower equipt) tactic per suggestions here-but it works only in deep water best I can describe it is a roller coaster ride (in a GATO class) between 550 and 350 ft with - turns and rapid changes in depths and speed and no speed coasting just as the Kaibokan is overhead and making it's runs. Time the depth changes just as he fires and that is hard to tell in the interior unless you think he is right over you. Tough playing interior only and if you think an exterior view helps HAHAHA it's still tough.

Pay close attention to damage control because just as you think you got it down the old saying-even a broken clock can tell the time right once a day (if not twice a day )comes into play. That is if you have the Kaibokan CrewRating=3. on a good weather day and a smooth sea.
Really nothing new just you just need to be unpredictable while the KAIBOKAN runs low on charges.
FWIW USS HARDER tried a down the throat shot against a similar vessel. 3 torpedoes fired- 2 went past to one side-one went past the and then they were sunk. The bay in which this happens is 900 ft. The vessel according to the book DEATH AT A DISTANCE detailing the HARDER's exploits stated it had racks and a thrower.
http://en.wikipedia.org/wiki/Type_D_escort_ship
Really the best tactic is to avoid them.
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