Submarine forces refer to military units that operate submarines, which are watercraft capable of underwater navigation. These forces play a crucial role in naval warfare, intelligence gathering, and deterrence. Submarines can be equipped with various weapons, including torpedoes and ballistic missiles, allowing them to engage enemy ships and land targets while remaining hidden beneath the surface. Submarine forces are typically part of a country's navy and can be categorized into different types, such as attack submarines and ballistic missile submarines. They are essential for maintaining maritime security and can conduct covert operations, making them a vital component of modern military strategy.