My experience is that it will run over and over u until night changes to day or reversed. Til that point i run in a wide circle with 1kts to maintenance depth til this happens.
Aaargh....regarding my convoy i dont mind a hurricane but thick fog makes it nasty. I cant see a thing until i litterly run into the target. Need to dig out my hydroattack skills again. At least i see two burning ships from an AI attack as lighttowers from a larger distance.