Ob

The Ob-class (Project 320) is a series of Soviet hospital ships designed to provide comprehensive medical support to naval task forces and remote garrisons. These vessels are equipped with extensive medical facilities, including multiple operating rooms, specialized clinics, and hundreds of hospital beds. They also feature a helicopter deck to facilitate rapid medical evacuation at sea.

Developed in the late 1970s, the Project 320 ships were constructed in Szczecin, Poland, to meet the Soviet Navy's need for dedicated mobile medical support. A total of four vessels were completed between 1980 and 1990: Ob, Yenisey, Svir, and Irtysh. The lead ship, Ob, entered service in 1980 and was eventually decommissioned and sold for scrap in 1997, while some of her sister ships remain active in the Russian Navy today.