Fregat (Project 1155 (Udaloy I))

The Project 1155 Fregat (Udaloy I) is a class of large anti-submarine warfare (ASW) destroyers built for the Soviet Navy. These ships are primarily designed for anti-submarine operations, equipped with a comprehensive suite of sonar systems, torpedoes, and anti-submarine missiles.

Developed in the 1970s to counter the growing threat of American nuclear submarines, the Project 1155 was designed to operate in tandem with the anti-surface Sovremenny-class destroyers. The lead ship of the class, Udaloy, officially entered service with the Soviet Navy in 1980. During and after the Cold War, these vessels undertook extensive global deployments, including anti-piracy patrols off the Horn of Africa in the 21st century. Several units remain active in the Russian Navy today, with some undergoing modernization to the Project 1155M standard to receive advanced anti-ship and land-attack cruise missiles.