of 2021. About forty vessels have been exported to several countries: : 2 original Kilo (Project 877), 4 Improved Kilo (Project 636). : 2 original Kilo (Project 877), 10 Improved Kilo (Project 636). : 10 original Kilo (Project 877), 1 sustained major casualty; – Designated as the : one boat transferred from Indian Navy by March 2020. : 1 original Kilo (Project 877) – . : 3 original Kilo (Project 877). : 1 original Kilo (Project 877) – . : 11-12 original Kilo (Project 877), 10 Improved Kilo (Project 636.3) and 2 additional Improved Kilo on order (636.3) for Pacific Fleet to be delivered 2023–2024. One further Improved Kilo ordered in August 2020, during the International Military-Technical Forum "ARMY-2020". : 6 Improved Kilo (Project 636). Includes , , , , , . Possible purchasers The government of Venezuela expressed interest in 2010 to buy three Project 636 Kilo-class submarines In 2019, a source reported the purported usage of a submarine of this class to insert Russian soldiers into Venezuela to protect the Venezuelan government. In 2017, the Philippine Navy showed interest in the Kilo-class submarine as part of its modernization program. Defense Secretary Delfin Lorenzana said that the country is now evaluating the Russian offer. Failed bids The Indonesian Navy was interested in purchasing two Kilo-class submarines. But in 2014 the Chief of Staff of the Indonesian Navy Laksamana Marsetio after a visit to Russia with the team from the Indonesian Navy to inspect the said submarines decided to cancel the plans. He said "The submarines look good on the outside, but the inside is filled with broken equipment, and the two submarines have been in storage for two years." Indonesia chose to buy six Improved Jang Bogo-class submarines later known as instead including a transfer of technology, where Indonesia will eventually build four of six of the submarines with South Korea. Specifications There are several variants of the Kilo class. The information below is the smallest and largest number from the available information for all three variants of the ship. Displacement: 2,300–2,350 tons surfaced 3,000–4,000 tons submerged Dimensions: Length: 70–74 meters Beam: 9.9 meters Draft: 6.2–6.5 meters Maximum speed 10–12 knots surfaced (18–22 km/h) 17–25 knots submerged (31–46 km/h) Propulsion: Diesel-electric Maximum depth: 300 meters (240–250 meters operational) Endurance at submerged at snorkeling (7,500 miles for the Improved Kilo class) 45 days sea endurance Armament Air defence: 8 Strela-3