A sailor from the S-8, hull number SS-113, the submarine that torpedoed the Deep One city off the coast of Innsmouth.*
*"Wait, that's not what Chaosium's "Escape From Innsmouth" says," I can hear you saying. That's true, but based on historical events I believe it was actually the S-8 that did the deed.
In real life, there were five submarines assigned to patrol the area where Lovecraft set the fictional town of Innsmouth in early February of 1928- S-6, S-8, S-12, S-19, and S-20. S-6 was assigned to the recovery efforts for the S-4, a submarine tragically sunk by an accidental collision in December of 1927. Of the remaining four, the cruise record for the S-8 is the only one that specifically mentions a delay in it's annual trip south (to late February) coinciding with the time of the Innsmouth raid.