Supercavitation Submarine
A class of extremely fast, lightweight submarines used by the Hyperion Federation.
The Supercavitation Submarine makes many sacrifices to be a fully operable submarine that exploits the phenomenon of supercavitation for extreme speed. For example, it is only about 30 m long and has a crew of 20. It is weakly armoured and armed and cannot mount any form of CIWS weaponry because it would cause resistance. It can achieve a speed of mach 5. Underwater.
By moving at high speed, and injecting air into the water in front of it as it moves, water can be pushed away from the vehicle. If done at sufficiently high velocity, this can create a large air bubble, which the vehicle travels through. This is advantageous as air has a much lower resistance than water, and because photon thrusters can function more effectively. The vehicle has fins for guidance and course correction, as well as several types of radar and sonar. The radar uses particles that are unimpeded by water, sometimes even a strange form of phonon radar. Although this operation produces a lot of noise and makes the submarine easily detectable, it has extreme evasion abilities and can easily evade most fire, before firing its volley of torpedoes at a target and then rapidly retreating to rearm.
The submarine is armed with several torpedoes meant for anti ship and anti submarine roles.
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