The attack with Ukrainian-made "Sub Sea Baby" drones hit the submarine in the port of Novorossiysk where Russia has rebased many of its Black Sea naval vessels to put them out of reach of Ukrainian strikes, the Security Service of Ukraine (SBU) said.

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

The keel was laid for USS Barb, the 31st Virginia-class nuclear-powered submarine, amid a transition away from Los Angeles-class submarines.

The Russian submarine was allegedly carrying Kalibr cruise missiles, which Russia has used in devastating strikes on critical infrastructure and military targets across Ukraine. The SBU said the submarine was “put out of action” as a result of the blast. The FT could not independently verify the claim.

EADaily, December 15th, 2025. The Varshavyanka submarine did not receive critical damage during the attack of Ukrainian naval drones in Novorossiysk, according to the SBU. This is reported by the telegram channel "Military Correspondents of the Russian Spring" with reference to a source.

The nuclear reactor aboard France’s fourth Suffren-class nuclear-powered attack submarine has been started for

The Canadian government remains tight-lipped on the timeline and funding required for the next steps of its Canadian Submarine Patrol Project, which should offer improved capabilities for the country’s navy.

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