Thanks for the responses
I've learned (from this forum

) to not save near land, near ships or sinking ships, or submerged. But I still ocationally get bit by the save bug.
The grey ship/radar thing is wierd. It can be
perfectly calm seas, I haven't saved recently, I'll just be chugging along. "Radar signals detected!". I go to the map (or I'm already there), and an instant later, where the contact line was pointing, a grey ship icon pops up. I'm nowhere near the bermuda triangle, so ships/planes whatever they are shouldn't be crashed outta the blue on perfectly nice days
I usually have my flak gunners set to fire at will, long range, all targets and directions. I generally only shoot at lone bombers or search planes like Catalinas. If I see more then one contact when radar is detected, it's time to dive

I did try to take on a hurri once, but after a few passes he lined up nicely from behind my boat and raked us good. It was not a pretty sight on deck

I'll try hopping into each position and firing off some shots in the planes direction.