If.. I may interject here... concerning your... demise incident, what time frame were you at... '42... '43...???
If, it was '42 or '3, iirc... the IJN, did have a brief period in success of sinking a few of the U.S. fleet boats... not nearly enough, to stave off... the eventual destruction of their merchant fleet, following the U.S. finally getting the snafu with the Mk 14 torps, straightened out & really giving it to their shipping & warships, when the subs ran across them.
Add to that, the introduction of better ship & aircraft detection gear on the fleet boats... well, for the IJN it was all over for them, by that time... but the
.
By... mid 44, onward... the U.S., really got to rolling &...
at that point, the IJN, was well on their way, to losing the war.
M. M.