Deep Sea Detectives

Season 3 Episode 2

Forgotten Subs of WWII

Aired Tuesday 8:00 PM Unknown on The History Channel
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Episode Summary

Forgotten Subs of WWII
On June 20, 1941, the US Submarine O-9 headed out of Portsmouth, New Hampshire, and nosed below the surface carrying 33 hands and never returned. Inquiries into her sinking failed to find answers.

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