How does one attack a zig-zagging convoy?

[Rockin Robbins]

Originally Posted by Gibus

Hello,

The doctrine of attack is different in the case of a merchant convoy or task force.
Yes, the convoy will eventually cease its zigzags, one day ...
My advice is to make a dent in the ASW shield and then launch torpedoes very closely, about 600 or 700 meters. Keep solid rear tubes to protect against an destroyer counter attack. Never refuse to fight against a destroyer. 100 meters underwater, the commander is blind; not to periscope depth.

Good hunt.

Remember that every torpedo shot at an escort is a torpedo not sinking merchant tonnage. Since escorts are so nimble, they're a very low probability target too, so making a dent in the escorts is making a larger dent in your torpedo supply.

I'd say the opposite of the above advice. Never fight a destroyer unless your life depends on it. Your job, just as it is with aircraft, is not to be seen by them. You don't exist. The first notice they should have of you is BOOM!

You are sluggish and poorly armed. They are nimble and very well armed. They also outnumber you. You do the math.

Sink the merchies. Avoid the escorts.

If the convoy is zig zagging then back off and wait for them to stop zigging. Should be good in a half hour.