The Foxtrot class was the NATO reporting name of a class of diesel-electric patrol submarines that were built in the Soviet Union. The Soviet designation of this class was Project 641. The Foxtrot-class group of submarines became the most successful of the Soviet post-World War 2 diesel-electric attack submarine offerings. The design saw construction from the period spanning 1957 to 1983 and were in service from 1958 until as recently as 2014 with foreign navies. Seventy-five total boats made up the class and these served the Soviet/Russian navies as well as the naval services of Cuba, Libya, India, Poland and Ukraine.

The boats displaced 1952 tons when surfaced and 2475 tons when submerged. Overall length was 91,3 m with a beam of 7,5 m and a draught down to 5 m. Power was served through 3 diesel units of 2,000 horsepower output and 3 Electric motors. Power was sent to 3 shafts. A single auxiliary motor was also carried. Performance included a maximum surfaced speed of 16,8 knots and a maximum submerged speed of 16 knots. Range was out to 30,000 nautical miles giving the Foxtrot-class excellent reach. It could stay submerged for up to five days. Its crew numbered seventy-seven. Armament was 10 torpedo tubes with six located at the bow and four at the stern. Twenty-two torpedo reloads were carried.

The Foxtrot-class was a regular component of all four Soviet Navy fleets and represented one of the more important boat groups of the Cold War years. Relatively fast and powerful, they showcased the Soviet commitment to an effective underwater attack force rivaled by few world powers of the period - this prior to the shift to all-nuclear-powered types. The Russian Navy retired its last Foxtrots between 1995 and 2000; units were scrapped and disposed of for museum purposes.

Submarine B-435 laid down 24 March 1970 at the New-Admiralty Shipyard, Leningrad (yard No.260), launched 29 May 1970, commissioned 06 November 1970 and was assigned to the Baltic Fleet, then Northern Fleet.

27 August 1990 the submarine was transferred to the Black Sea Fleet.

In 1995, the submarine's batteries permanently failed and she became abandoned without their replacement. In 1997 unable to fix the unused submarine, the administration of Russian Navy handed it over to the Ukrainian Navy during the partition of the Black Sea Fleet. Like most of the country's naval ships, she was renamed after one of Ukraine's cities - Zaporizhzhia. The city's community began to co-sponsor the ship, especially the accommodation needs of the crew. But it was only in 2003 when Ukrainian government was able to buy a new batteries set abroad and make Zaporizhzhia's survival real. However, she was immediately placed under repair in Sevastopol.

In 2005, Zaporizhzhia was considered for inclusion in the 2006 joint exercise conducted by the Ukrainian Navy and the Italian Navy, but the end of her repair was postponed. Being on a years-long repair, Zaporizhzhia was an inactive military unit. As of July 2010 Zaporizhzhia was preparing for trials after repairs. All repairs were finished on 17 April 2011. The first trial sail was finished successfully on 18 July 2012. Late June 2013 all long-term maintenance work and tests were completed.

On 22 March 2014 the submarine lowered the Ukrainian flag and raised the Russian flag.

Now the submarine is located in the Sevastopol.