Virginia-class (USA): The Virginia-class submarines are known for their stealth, advanced sensors, and versatile capabilities. They are designed for a range of missions, from anti-submarine warfare to intelligence gathering.

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Ohio-class (USA): Originally built as ballistic missile submarines, some Ohio-class submarines have been converted into guided-missile submarines. They possess formidable firepower and can launch a variety of cruise missiles.

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Columbia-class (USA): The next-generation ballistic missile submarines for the United States, set to replace the Ohio-class. These submarines will carry the country's nuclear deterrent and are expected to be highly advanced in terms of stealth and technology.

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Seawolf-class (USA): Though not produced in large numbers, the Seawolf-class submarines are incredibly fast, exceptionally quiet, and equipped with advanced sonar systems. They were designed during the Cold War for deep-ocean missions.

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Astute-class (UK): The Royal Navy's Astute-class submarines are among the most advanced in the world. They are known for their quietness, endurance, and advanced nuclear propulsion systems.

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Borei-class (Russia): Russia's Borei-class submarines are the newest addition to their strategic nuclear forces. They carry intercontinental ballistic missiles and are designed to operate quietly under the Arctic ice.

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Yasen-class (Russia): These multipurpose submarines are equipped with land-attack cruise missiles, torpedoes, and anti-ship missiles. They are versatile and can perform various roles in naval warfare.

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Type 212 (Germany): The Type 212 submarines are known for their fuel cell propulsion system, which allows them to stay submerged for extended periods with minimal noise emissions.

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Type 216 (Germany): Currently under development, the Type 216 is expected to be a significant leap in submarine technology for Germany, featuring increased stealth and range.

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