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.

[7][6] The boat has a developed vertical tail unit with a streamlined boule, in which the towed antenna is located.

[10] This is largely due to the fact that Barnaul was used as a donor of spare parts for the restoration of other ships of its class.

In 2014, it was announced that the Zvezda Far East shipyard would repair the boat by the end of 2014, but the renovation never started.