Do you still get credit if you don't see it sink?

[Madman]

After a long time away I decided to reinstall SH3 (and added NYGM....nice mod guys, thanks). So anyway, I spot what looks like a small tanker (funnel near the stern) making about 6 knots in heavy seas. My first shot hits amidships (starboard side), starts a small fire, and knocks her speed down below 1 knot. 1 hour later, she's got a heavy list to starboard but is still crawling along so I fire again and hit her just under the funnel (starboard side again). It starts a big fire, but she still keeps crawling along. I remember reading that with NYGM it may take a while for a ship to sink so I waited.......and waited.....and waited (good thing for time compression). 4 hours later, she finally goes down (kudos to the damage control guys on that ship.....they fought the good fight). So, I'm just wondering, if I had left the area after the second hit, would I still have gotten credit for the sinking that finally happened 4 hours later?