However.....before we get to meeting the Japanese Destroyer we are going to go back 8 months prior to that event and add in some more historical encounters for this sub and its crew.
For more detailed information on this sub USS S-38 (SS-143) I then search Wikipedia for USS S-38 (SS-143) which comes up with the following page of details.
Of interest is the first paragraph where the S-38 mistakenly torpedoed and sank Norwegian freighter Hydra II west of Mindoro's Cape Calavite.
To keep this mission historically correct the mission parameters would have your sub S-38 encountering this freighter and sinking it before setting course toward the Luzon coast.