The Udaloy class are a series of anti-submarine destroyers built for the Soviet Navy - The Russian designation is Project 1155 Fregat (Frigate bird)
The Project 1155 dates to the 1970s when it was concluded that it was too costly to build large-displacement, multi-role combatants. The concept of a specialized surface ship was developed by Soviet designers. Two different types of warships were laid down which were designed by the Severnoye Design Bureau: Project 956 destroyer and Project 1155 large antisubmarine ship. Generally the Soviet equivalent of the American Spruance class destroyer and AEGIS, there are variations in SAM and air search radar among units of the class. Based on the Krivak class, the empahasis on ASW left these ships with limited anti-surface and anti-air capabilities.
Following Udaloy's commissioning, designers began developing an upgrade package in 1982 to provide more balanced capabilities. The Project 1155.1 Fregat II Class Large ASW Ships (NATO Codename Udaloy II), Russia's only multipurpose destroyer, is intended to be the Russian counterpart to the American Arleigh Burke class ships. The Udaloy-II is modified by the replacement of the SS-N-14 by the SS-N-22, reflecting a change in emphasis from ASW to anti-shipping, however, her standoff ASW capability is retained by firing SS-N-15 Starfish missiles from the torpedo tubes. Other changes include an improved self defense capability with the addition of the gun/SAM CIWS systems. Similar to Udaloy externally, it was a new configuration with the Moskit antiship missiles, a twin 130 mm gun, the Udav antitorpedo system and several anti-aircraft systems. Powered by a modern gas-turbine engine, it was equipped with more capable sonars, an integrated air defense fire control system, and a number of digital electronic systems based on state-of-the-art circuitry.
In 2006 it was reported by Jane's that the Navy was to place the Northern Fleet's Project 1155 Udaloy I-class destroyer Admiral Kharlamov into reserve in the face of delayed funding for a planned overhaul and upgrade programme.
The Admiral Panteleyev was the last of the Udaloy I destroyers layed down. She was commissioned in 1990.
