I think if your props are quiet enough and you are almost directly under a merchant, the merchant's engines would mask your prop noise. It probably depends on the speed of convoy. If they are doing 5 knots, your probably ok. If there doing 8 knots then probably not. Even if they didn't here you doing 8 knots, that speed will drain your batteries quickly.
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NYGM3.2 + Tonnage War Minefield________IABLShipsRezonedFinal
Hitman Optics & Compass_______________Thomsen's Sound Mod v3
100% Realism DID + No God's Eye View____SH3 Commander Crew Rotation

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