As you note, the conditions prevent you from attacking the convoy safely. Even if you do manage to hit something, you are quite liable to lose it again in the murk & be unable to finish it off.
To track the convoy, I would put down markers at the extreme tip of each sonar contact. Wait five minutes and do the same. That should give you a rough indication of path and speed -- at least enough so that you can set a parallel course and wait for the weather to clear.
But you want to take new ranges every hour or so, in case the convoy decides to change path.
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"Well, now, that's true... the IXC is a bit of a chick magnet..but you really can't beat the VIIB for off-road fun."
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