OVERVIEW: The U 01 Zaporizhzhia [PL-641 Foxtrot] is a diesel-electric powered submarine operated by the Ukrainian Navy. Originally of Soviet design and construction, it was transferred to Ukraine following the dissolution of the Soviet Union and commissioned in 1992.

DETAILS: The Foxtrot-class submarines (Project 641) were designed and built by the Soviet Union as a successor to the Zulu-class. The design philosophy prioritized long patrol endurance and relatively quiet operation, intended primarily for anti-submarine warfare (ASW) and anti-surface warfare (ASuW) roles. These submarines represented a significant upgrade in underwater performance and sonar technology compared to earlier Soviet designs, although they were still notably noisier than contemporary Western submarines. The class was intended to operate in distant waters, disrupting sea lanes and hunting Western submarines, particularly those carrying ballistic missiles. The relatively simple design allowed for mass production, making the Foxtrot class a mainstay of the Soviet submarine fleet for several decades, and many were exported to Warsaw Pact allies and other nations. The U 01 Zaporizhzhia represents one of the later examples of the class and incorporates minor upgrades from the original design.

The primary roles of the U 01 Zaporizhzhia are ASW and ASuW within the Black Sea region. Given its age and technological limitations, the vessel's effectiveness in a modern high-intensity conflict would be limited. However, it remains valuable for coastal patrol, surveillance, and training exercises. The submarine's 533mm torpedo tubes provide a capability to engage both surface ships and submarines with conventional torpedoes. The boat would also have retained a minelaying capability, which could be employed in a defensive role. Its operational status and serviceability have been subject to speculation over the years, with reports indicating periods of extended inactivity.

The sensor suite fitted to the U 01 Zaporizhzhia provides the vessel with a baseline ability to detect and track targets, albeit less effectively than more modern platforms. The installation of the Pike Jaw [MG-200 Arktika] and Wolf Paw [GAS-372 Hercules-2M] sonar systems provide both active and passive sonar capabilities for target detection and tracking. The Trout Cheek [MG-10M Feniks-M] system is a dedicated sonar fire control system used to improve the accuracy of torpedo attacks. The Snoop Plate [Flag] radar enhances surface detection, while the Acoustic Intercept [MG-23 Svet-M] system is designed to detect and analyze acoustic emissions from other vessels, particularly other submarines, providing valuable intelligence on their activities. The Generic Submarine Periscope and Optical systems allow for visual observation of the surface, essential for navigation and target identification in coastal environments. The Quad Loop DF provides radio direction finding capabilities.

SPECIFICATION: Length: 91.3 m || Beam: 7.5 m || Draft: 5.1 m || Disp: 1952 t

SENSORS: Quad Loop DF || Stop Light B [Nakat] || Trout Cheek [MG-10M Feniks-M] || Snoop Plate [Flag] || Acoustic Intercept [MG-23 Svet-M] || Pike Jaw [MG-200 Arktika] || Wolf Paw [GAS-372 Hercules-2M] || Generic Submarine Periscope || Optical

ARMAMENT: 533mm TT || 533mm TT