The robust body is made of high quality alloy steel with σт = 1 GPa (10,000 kgf / cm²).

To simplify the installation of equipment, the boat was designed using zonal blocks, which made it possible to transfer a significant amount of work from the cramped conditions of the sub's compartments directly to the workshop.

After completion of the installation, the zonal unit is “rolled” into the hull of the boat and connected to the main cables and pipelines of the ship's systems.

[11] On 28 February 1990, it became part of the 45th Submarine Division of the 2nd FLPL of the Pacific Fleet based at Vilyuchinsk (Krasheninnikov Bay).

During the execution of the BS missions, 12 detections of foreign submarines were made, with continuous tracking for 380 hours.

From 30 September to 31 December, performing combat duty tasks under the command of Captain 2nd Rank S. M. Igishev (senior on board Rear Admiral Yu.

On 2 December, for the first time in the history of the Navy, the successful firing of two cruise missiles of the C-10 Granat complex with different flight missions from the same combat area was carried out, which was highly appreciated by the command of the fleet.

In February 1996, the submarine was accepted by the crew of the K-152 Nerpa, commanded by Captain 2nd Rank SS Demin.

During the development of combat training tasks, a US Navy nuclear submarine of the Los-Angeles-class was discovered, which was monitored for four hours.

[13] On 26 September 2014, K-391 Bratsk and K-295 Samara were delivered by the Dutch dock ship Transshelf along the Northern Sea Route from Kamchatka to Severodvinsk.