Stalking smoke, is there a way...
 

to get rid off it. I´m using WB latest NSM and been scanning the threads for answers. The smoke seems to have appeard after I sank a merchant only with the deckgun.

Anyway thanks for a great mod WB....

Whenever I've had the phantom smoke follow me, it only went away when I started my next patrol. Saving and reloading in the current patrol would make it disappear for awhile, but it always came back.

Once I docked and started a new patrol, it stayed gone.