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 group representing the U.S. Navy’s “Silent Service” is pressing for new research on environmental hazards in submarines.

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

Earlier this month, Huntington Ingalls Industries reported that construction of its ROMULUS unmanned surface vessel prototype had reached 30% completion and remained on track for sea trials in late 2026,

With fifth-generation submarines on the horizon, their technology has come a long way. Ultra-advanced subs of today use nuclear power and beyond.

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