Chinese scientists want to use lasers to power ultrafast, stealthy submarines. A laser expert says there's a major flaw in their plan.

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A nuclear-powered Type 094A Jin-class ballistic missile submarine of the Chinese People's Liberation Army (PLA) Navy is seen during a military display in the South China Sea April 12, 2018.
A nuclear-powered Type 094A Jin-class ballistic missile submarine of the Chinese People's Liberation Army (PLA) Navy in 2018.

Reuters

A group of WWII-era scientists used themselves as guinea pigs to learn to breathe underwater. Their experiments helped make D-Day possible.

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A diver of the British Royal Navy is walking down a pier of Cherbourg harbor on
A diver from the British Royal Navy wore a self-contained suit without a cable attaching him to a ship in 1944.

AP Photo

Photos show US Navy SEAL operations aboard hidden shelters on submarines

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Guided-missile submarine USS Florida
Guided-missile submarine USS Florida transits the Suez Canal en route to the Red Sea.

US Navy photo by Mass Communication Specialist 2nd Class Elliot Schaudt

Japan's 'Big Whale' submarines add another weapon to bottle up China's navy

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Japan has built one Taigei-class attack submarine every year since 2020. The lead ship seen here was commissioned in 2022.
Japan has built one Taigei-class attack submarine every year since 2020. The lead ship seen here was commissioned in 2022.

Japan Maritime Self-Defense Force

North and South Korea are taking their missile race underwater. Here's how their new missile-launching submarines stack up

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North Korea Kim Jong Un submarine
North Korean leader Kim Jong Un at the launch of a new "tactical nuclear attack submarine" in September.

KCNA via REUTERS

Trump bragged to an Australian businessman about a highly secret detail regarding US submarines

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Trump nyc
Former President Donald Trump.

Spencer Platt/Getty Images

Seen by the US military as a threat for years, Russia's Yasen-class submarines are now on track to get hypersonic missiles

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Russian Navy Yasen submarine Kazan
Russian Navy Yasen-class sub Kazan arrives at its permanent base on Russia's Arctic coast on June 1, 2021.

Lev Fedoseyev\TASS via Getty Images

A UK nuclear submarine had its broken bolts fixed with superglue, report says

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HMS Vanguard
British submarine HMS Vanguard in 2009.

LA(P) Ritchie Harvey/AFP via Getty Images

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