USS S-4: America Sank Its Own Submarine — 6 Men Tapped Morse Code For 72 Hours Before Falling Silent

USS S-4: America Sank Its Own Submarine — 6 Men Tapped Morse Code For 72 Hours Before Falling Silent On December 17, 1927, USS S-4 was rammed and sunk off Provincetown, Massachusetts by a U.S. Coast Guard cutter during a routine training exercise. Forty men died. But in the torpedo room, six men survived the initial flooding and sealed themselves inside. For seventy-two hours they tapped Morse code through the hull while rescue divers worked above them in brutal winter seas. The navy knew they were alive. The weather wouldn't let anyone reach them in time. The tapping eventually stopped.

USS Tang: America's Most Feared Submarine Was Sunk By Its Own Torpedo - 9 Men Survived
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USS Tang: America's Most Feared Submarine Was Sunk By Its Own Torpedo - 9 Men Survived

They Mocked His “Toy Submarine” — Then It Sank 33 Japanese Ships in One Year
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They Mocked His “Toy Submarine” — Then It Sank 33 Japanese Ships in One Year

The Soviet Officer Who Saved the World... And Was Punished by the Kremlin
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The Soviet Officer Who Saved the World... And Was Punished by the Kremlin

They Found 125 Bodies on Australia's Oldest Shipwreck.
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They Found 125 Bodies on Australia's Oldest Shipwreck.

The Cheap British Magnet That Made U-Boat Hulls Betray Themselves
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The Cheap British Magnet That Made U-Boat Hulls Betray Themselves

USS Grayback: Divers Found A WWII Sub Missing For 75 Years —A Map Error Had Hidden It The Whole Time
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USS Grayback: Divers Found A WWII Sub Missing For 75 Years —A Map Error Had Hidden It The Whole Time

USS-Scorpion: Two Nuclear Torpedoes Still Sit 3,000 Meters Down — And Nobody Can Retrieve Them
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USS-Scorpion: Two Nuclear Torpedoes Still Sit 3,000 Meters Down — And Nobody Can Retrieve Them

Why Japanese Admirals Were Shocked to Discover Midway Was a Trap
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Why Japanese Admirals Were Shocked to Discover Midway Was a Trap

They Opened a Sealed Nazi Submarine — What They Found Inside Changed the Official Story
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They Opened a Sealed Nazi Submarine — What They Found Inside Changed the Official Story

JUST NOW: Deep Sea Submersible Entered the USS Indianapolis — What It Filmed Was Beyond Terrifying
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JUST NOW: Deep Sea Submersible Entered the USS Indianapolis — What It Filmed Was Beyond Terrifying

USS Samuel B. Roberts: Divers Found The Deepest Wreck Ever — Destroyer That Fought Like A Battleship
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USS Samuel B. Roberts: Divers Found The Deepest Wreck Ever — Destroyer That Fought Like A Battleship

USS Wahoo: Russia Found America's Legendary Submarine - What They Saw Was Shocking
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USS Wahoo: Russia Found America's Legendary Submarine - What They Saw Was Shocking

When a "Broken" American Submarine Accidentally Discovered a Hidden Japanese Base
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When a "Broken" American Submarine Accidentally Discovered a Hidden Japanese Base

HMS P-311: Divers Found A British Sub With Human Torpedoes Still Loaded — 71 Men Still Inside
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HMS P-311: Divers Found A British Sub With Human Torpedoes Still Loaded — 71 Men Still Inside

When Americans Captured This Nazi Sub Alive — They Found Hitler's Secret Weapon
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When Americans Captured This Nazi Sub Alive — They Found Hitler's Secret Weapon

American Pilots Flew a Captured Ki-43 — Called It a “Paper Airplane”
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American Pilots Flew a Captured Ki-43 — Called It a “Paper Airplane”

Edmund Fitzgerald: Divers Opened A Ship That Sank With No Distress Call — All 29 Men Gone In Minutes
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Edmund Fitzgerald: Divers Opened A Ship That Sank With No Distress Call — All 29 Men Gone In Minutes

WWII Submarine Found With Crew Still Inside U-455 Mystery — Turn Pale When They Open
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WWII Submarine Found With Crew Still Inside U-455 Mystery — Turn Pale When They Open

Why Being on a Soviet Submarine During WW2 Was Hell
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Why Being on a Soviet Submarine During WW2 Was Hell

They Laughed at His Patrol Boat's Machine Gun — Until a Japanese Destroyer Started Sinking
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They Laughed at His Patrol Boat's Machine Gun — Until a Japanese Destroyer Started Sinking