Ukrainian intelligence published secret documents on K-555 Knyaz Pozharskiy

On the morning of August 3, 2025, the Main Intelligence Directorate of the Ministry of Defense of Ukraine published secret documents on the Russian strategic nuclear submarine, belonging to the 4th generation, K-555 Knyaz Pozharskiy.

This was reported by Clicker.

“Specialists of the GUR of the Ministry of Defense of Ukraine obtained closed internal documentation about the newest submarine of the aggressor state Russia – the strategic nuclear submarine K-555 Knyaz Pozharskiy of project 955A Borei A,” the Ukrainian intelligence service said in a statement.

The following were at the disposal of the Ukrainian military intelligence:

• Name lists of the submarine crew, including data on positions, qualifications and level of physical training;

• combat instructions for the crew;

• combat scheme of the ship, schemes of systems for ensuring survivability and organizational structure of the crew;

• instructions for the crew in cabins and cockpits, instructions for transferring the wounded and cargo, procedures for towing and other job descriptions;

• engineering documentation, in particular, a report on the study of a deformed radio beacon indicating the members of the commission and enterprises that participated in the study.

The scouts also obtained an extract from the ship’s schedule book Knyaz Pozharskiy. This voluminous document regulates the daily combat and everyday work of the vessel.

According to Ukrainian intelligence, the Project 955A Borei A submarines are one of the key elements of the Kremlin’s so-called nuclear triad. The submarines have 16 launch pods for R-30 Bulava-30 intercontinental ballistic missiles, each of which can carry up to 10 warheads.

The strategic submarine Knyaz Pozharskiy joined the 31st submarine division of the Northern Fleet of the Russian Navy only on July 24, 2025. Its permanent base is Gadzhievo, Murmansk Region of Russia.

Russian dictator Vladimir Putin personally accepted Knyaz Pozharskiy for combat duty.

“The information obtained by intelligence officers allows us to identify the features and technical limitations of not only Knyaz Pozharskiy, but also other submarines of project 955A, which are critically important for supporting the imperial myth of the aggressor state of Russia,” the Ukrainian intelligence service said in a statement.

What is known about Knyaz Pozharskiy

The laying of Knyaz Pozharskiy took place on December 23, 2016 in Severodvinsk at the Sevmash plant under the factory number 208.

Launch was planned for the second half of December 2023, then was postponed to the beginning of February 2024.

On February 3, 2024, Knyaz Pozharskiy was launched and, after being removed from the slipway, began the start of factory sea trials.

On July 28, 2024, Knyaz Pozharskiy began factory sea trials.

The transfer of Knyaz Pozharskiy to the Northern Fleet was scheduled for the end of 2024, but in early December of the same year, information appeared about the postponement of the delivery dates to June 2025.

On July 24, 2025, in the presence of Vladimir Putin, the Russian naval flag was raised on K-555, the ship was commissioned and became part of the 31st submarine division of the Northern Fleet based in Gadzhiyevo.