A video of the attack on Novorossiysk with the Sub Sea Baby drone shows a calm port with several ships before a massive explosion kicks up water and debris.

As it tried to demonstrate its continuing ability to fight, Ukraine said it had used drones to inflict serious damage on a Russian Kilo-class submarine at a Black Sea port.

North Korean leader Kim Jong-un, on the 25th, guided the construction of a newly built 8,700-ton-class "nuclear-powered strategic ballistic missile submarine" and criticized South Korea’s nuclear-powered submarine development as "an aggressive act that gravely infringes upon our nation’s security and maritime sovereignty.

The "USS Seawolf" is on deployment to preserve "a free and open Indo-Pacific region," the U.S. Navy has told Newsweek.

A British naval supply ship with an on-board helicopter was deployed to track the stealthy Kilo-class submarine Krasnodar, the Royal Navy said.

Russia is developing a new type of nuclear submarine to boost its defenses as it faces sanctions and the fast upgrades of NATO naval forces.

The Navy is investing almost half a billion dollars in Palantir artificial intelligence software that promises to speed up shipbuilding processes.

French officials are investigating an illegal drone overflight of the Atlantic coast base for France's nuclear-armed submarines.

A U.S. nuclear-powered submarine arrived at a key naval base in the southeastern city of Busan on Tuesday to replenish supplies and provide rest for crew members, South Korea's Navy said. The USS Greeneville,