Can I save near a convoy?

[King_Zog]

I've heard you shouldn't save your game near ships you can see or even hear on the hydrophones. So far I've tried to stick to this...

But, when I'm shadowing a convoy it can takes me a while to plot its course and then get into a good position for an attack, sometimes a couple of hours of play time.

If I save my game and then come back to it later while I'm near the convoy (like in visual range) will this cause all the ships in the convoy to lose their waypoints, or even worse things like CTDs and corrupted save games?

Once you've intercepted convoy is the general rule to play through as long as it takes to attack it and then get clear of what is left?

I'm just wondering, as when the visibility is poor or the convoy is swarming with escorts the whole process can take me quite a bit of time.