Caterpillar Drive Submarines

 Here is the technology behind Australia's caterpillar drive sub everyone should have one they operate with a compressionless rotor engine running on water as the powerplant does not need atmospheric air and runs in a sealed loop. recycling 100% of the environment in the loop.

The propulsion system is a compressionless rotor engine with open ports at each end of the combustion chamber which now is used to move water from the front to the rear of the sub producing a jet stream water pump to move water to propel the submarine.