Russian submarine Pantera

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.

[9] Initially, the boat carried only tactical numbers, but on 10 October 1990, the Commander-in-Chief of the USSR Navy V.N.

[11] In 1996, during a military campaign, as a result of an accident in the refrigeration system, freon began to flow into the compartments, the crew was able to eliminate the malfunction on their own without surfacing.

[12] In January 1999, the commander of the submarine, Captain 1st Rank Sergei Spravtsev was awarded the title of Hero of Russia.