The K-400 is a type of submarine developed by Russia as part of its naval fleet. It is designed for various missions, including surveillance, reconnaissance, and anti-submarine warfare. The K-400 features advanced technology and capabilities, making it a significant asset for maritime operations. This submarine is part of a broader class of vessels that enhance Russia's underwater capabilities. Equipped with modern sensors and weaponry, the K-400 can operate in diverse environments, contributing to national security and strategic deterrence. Its design reflects the evolving needs of modern naval warfare.