The Submarine America Forgot — Until It Rammed a North Vietnamese Freighter

The Soviet Submarine That Sank Twice

The Year the Ocean Swallowed Four Submarines and Kept Its Secrets

For 43 Years Britain Hid What Happened in Its Own Waters

An American Submarine Hit a Soviet Vessel in 1974 — We Still Don't Know Which One

The Liquid Reactor That Destroyed the Soviet Navy's Fastest Submarine

The Secret Program That Sent American Submarines Inside Soviet Waters for 30 Years

The First American Submarine Lost in the Cold War

Operation Evening Star: The Cold War's Most Dangerous Game of Hide and Seek

The Nuclear Submarine the Soviet Navy Could Never Find

Operation Praying Mantis: The Day the US Navy Sank Iran's Fleet in 12 Hours

The US Navy Ship That's Been in North Korea for 56 Years

The Submarine That Sank While Russia Refused Help

The Soviet Submarine That Almost Started World War III

How One Revolutionary Hull Shape Made Every Submarine Obsolete

The Deadliest Soviet Submarine Ever Built

Why Liquid Sodium Reactors Failed in Submarines

Soviets Never Expected USS James Madison To Survive a Collision 100 Meters Below Holy Loch

The Moment Moscow Realized the Submarines They Mocked Were Winning the Cold War

The Soviet Navy's Worst Nightmare - USS Pargo SSN-650

Why the Navy Rejected Its Most Silent Submarine

The US Navy's Quietest Nuclear Submarine That Admirals Called a "Toy"

The Moment The Soviets Realized Tullibee Was Too Silent to Copy

USS Growler: The Nightmare of Being Watched Underwater

Why Soviet Sailors Feared Their Own Submarine's Liquid Metal Heart

The Moment Moscow Realized Growler Was a Nuclear Ghost Boat

The 200-Knot Soviet Weapon the US Navy Still Can't Match

Why Soviet Submarines Suddenly Went Silent in 1987

Japanese Dismissed American Submarines as 'Too Slow'... Until USS Aspro Destroyed Their I-43 Sub

Fisherman Thought He Caught a Whale... Then Realized It Was an American Submarine

USS Archerfish: Japanese Laughed At The American Commander... Until He Sank Their Largest Warship

Japan Called It "Unsinkable"... Then USS Archerfish Sank It In 8 Hours

Soviet Crew Laughed at "Slow American Technology"... Until USS Tautog Appeared Underneath Them

Commander Ordered Nuclear Torpedo Loaded... Then Realized One Officer Could Stop World War Three

Soviet Captain Dismissed American Submarine as "Fishing Boat"... Then It Appeared At Nuclear Base

Yankee Submarine: NATO Couldn't Understand How They Launched From Beneath Their Fleet

The 'Crazy Ivan' That Trapped American Sub Under Soviet Destroyer

The CIA's Secret Operation To Steal A Soviet Nuclear Sub

NATO Couldn't Understand How Red October Vanished From Sonar

Admirals Laughed at the Alfa Sub — Then It Outran Every Torpedo

Submarine Crew Couldn't Believe What Soviet Divers Found in Their Propeller After Iceberg Collision

British Submarine Lost Secret Sensor to Soviet Typhoon on Christmas Eve

German Commander Thought He Was Safe While Submerged... Until Four Torpedoes Found Him

U-181: German Commander Discovered Why New Acoustic Torpedoes Failed

USS Harder SS-568: American Cold War Sub That Became Italian Romeo Romei

USS Harder: 'Hit 'Em Again, Harder' - The Destroyer Killer of WWII

USS Trout: The Tang-Class Submarine Sold to Iran and Abandoned During the Revolution

The Navy's Most Dangerous Experiment: USS Jack

USS Snook: The Nuclear Submarine That Could Bank and Dive Like a Fighter Plane

USS Florida: The Only Ohio-Class Submarine to Fire Shots in Anger

Ohio Class: America's Doomsday Submarines That Could End Civilization

Why the US Navy Abandoned These Sonar-Breaking Submarines

Sacrifice and Survival: A Tale of Two Wickes

USS Snook: The Submarine That Vanished Without a Trace

USS Shark: The Last Skipjack-Class Submarine That Hunted Soviet Boats in the Atlantic

USS Greenling: The 1972 Soviet Trap That Changed Submarine Warfare Forever

K-147: The Day a U.S. Destroyer Caught a Soviet Sub Laying Spying Devices on the Seafloor

USS Dace: The Black Sea Ambush That Uncovered Cold War Treason

USS Permit: The Cold War Submarine That Defied Physics at Crush Depth

USS Sargo: The Terrifying Patrol That Shattered Second-Strike Confidence