[2022] The day I was sunk by a Submarine

One thing that looks worth pointing out. The Ping Indicator does look to skew ahead of the sub by a distance, so your first ASW Strike would have been correct if you were trying to prevent the Sub from yolo'ing directly at you. Since it pinged from range, it's safe to assume that it wanted to engage at range, so it might be better to drop "on top" of the sub as opposed to "leading it forward".

The drop was:

It might work better to do something like this to include the area behind the ping:

Secondly, you had two ASW Drops and could have used your second to further carpet the area. You could have not wanted to waste it as you were unsure of the sub's heading/movement, but outside of the sub misplaying and getting spotted you wouldn't have a reason to expect perfect drop information.

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Later the drop was:

It looks fairly on target, especially with the next ping lighting further forward...

...but no Depth Charge hits occurred so the Sub was likely reversing (to have that forward broadside). Reversing does make sense against a Pommern with Hydro if the sub wants to ping from depth/stealth.

Also, you again didn't use the second charge of ASW Strike. Maybe you weren't used to having 2 that could be fired off so quickly?

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Congrats on your first Death to a Sub! :D

That makes good sense. I hadn't considered trying for a perma-flood/slick, but that would be very useful indeed.