[sik1977]

Originally Posted by Rhino1978

same thing happened to me i put two fish in a t3 tanker from a convoy it was dead in the water and when they convoy moved off i thought id wait for the weather to clear and finish with deck gun as no tin fish left.....3 days later weather still bad got bored decided to move away,less than half a grid square and come back....bloody thing was gone and no tonnage for me damn damn...damn them all

Has happened to me as well. I figured out that if you move away from a stationary target (due to it taking a hit from you) more then 20KMs, then that target disappears. The reason for this is that the game only renders ships etc. in 3D upto 20KMs or so. Beyond that nothing is rendered in 3D.

There is another unconfirmed theory, which i noticed a few times but could be a co-incidence, i.e., that i discoeverd the same type of ship travelling undamaged a little bit away from where I left it damaged and half sunk in water. Its as if moving away 20KM (i.e., out of 3D rendering range) allows the ship to auto-repair and start moving again.

Anyhow, I usually never wait more then an hour or so for a Ship to go down, as after that there is not much chance it will, so either try and finish it off yourself, or if you are empty, move away.