This has happened to me the last few patrols, even with a qualified PO. I can't remember if this used to happen before, I'm just now getting back into things after a few months off.
Earlier today I had a merchant just a few thousand meters away, but my soundman wouldn't report the target (I was trying to get the bearing since it was dark and I could barely see it), even though I could hear it loud and clear over the hydrophones.
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