Submarine propulsion system enabling underwater operation without atmospheric oxygen, typically using stored oxidizer or closed-cycle engines.

Anti-ship missiles are guided missiles designed to engage and destroy naval vessels. They are typically used by aircraft, ships, or submarines to attack enemy ships.

Cruise missiles are self-propelled, guided weapons launched from platforms like attack submarines (SSNs) to deliver warheads over long distances with precision.

Propulsion system combining diesel engines to generate electricity, which powers electric motors driving the vessel's propellers.

Electronic Support Measures/ELectronic INTelligence suite: a sensor system on submarines that detects, identifies, and locates radar and communication emissions for passive threat assessment and tactical advantage.