I finally figured out how to find them with sonar.. doesn't work every time but seems like most of the time. So I accomplished the mission, get back to base and they send me right back out again to do the same damn thing
Off Guadalcanal. Hopefully this will be the last one for a bit. Also noticed lots of A6M's flying around and not attacking me when I'm in plain sight.. guess they are too busy shooting at American Lancasters. Maybe they haven't figured out S class boats have no AAA.