Ukraine's SBU domestic security service has released new footage it says shows the country's preparations for attacking a Russian submarine in the Black Sea port of Novorossiysk earlier this month.

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

NV explains what is known about these submarines. The Varshavyanka project (NATO codification — Improved Kilo) was developed ...

A Russian submarine traveling home from the Mediterranean has spent much of its journey surfaced. A NATO official said the activity is unusual. It's not ideal for a submarine to travel this way. The ...

Nato chief Mark Rutte has mocked one of Russia’s submarines for “limping home from patrol”, claiming the vessel had been forced to surface because of technical problems. Russia’s Black Sea Fleet ...

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

Ukraine said its naval drones damaged a Russian submarine in the Black Sea port of Novorossiysk, in a special operation it ...

Russia and China have conducted their first-ever joint submarine patrol in the Pacific, according to reports in state-run media. The patrol by diesel-electric submarines began in early August, and the ...

Chinese and Russian submarines have conducted a joint patrol, in the latest step in a growing Sino-Russian partnership. Here, a PLAN submarine participates in a naval parade near Qingdao in eastern ...

NATO leadership said that a lone Russian attack submarine appears to be "limping home," forced to travel on the surface. An alliance official told Business Insider the activity is "unusual" for a sub ...

You're currently following this author! Want to unfollow? Unsubscribe via the link in your email. Follow Jake Epstein Every time Jake publishes a story, you’ll get an alert straight to your inbox!