The USN Pacific Submarine Campaign - The Dark Year (Dec'41 - Dec'42)

Today we take a look at the opening year of the USN's pacific sub campaign, where almost everything went wrong, but laid the groundwork for things to start going right.
Sources:
www.amazon.co.uk/Unrestricted-Warfare-Officers-Submarine-Victory/dp/047138495X
www.usni.org/press/books/silent-victory
www.amazon.co.uk/Silent-Service-World-War-Submarine/dp/1636241263
www.amazon.co.uk/Sink-Em-All-Submarine-Warfare/dp/1387400738
Footage from US National Archives video codes:
428-NPC-26/15510/19449/15510/15502/15887/19460
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