The Kilo-class is a series of diesel-electric submarines developed by the Soviet Union and later produced by Russia. Designed for anti-submarine warfare and reconnaissance, these submarines are known for their quiet operation and advanced sonar systems. They can carry a variety of weapons, including torpedoes and anti-ship missiles, making them versatile in naval combat. First introduced in the 1980s, the Kilo-class submarines have been exported to several countries, enhancing their naval capabilities. They are often compared to other submarine classes, such as the Type 209 and Scorpène-class, due to their similar roles and designs in modern naval warfare.