CONTRAPEL
Introduction 1.
Propeller Theory 2.
Jet Theory 3.
History 4.
Contrapel Method 5.
Future 6.
Advantages 7.
Conclusion 8.

CONTRAPEL

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Propeller, water-jet, hydro electric power, pumping and propulsion technology will all benefit from this exciting new way to propel, harness or utilise energy from water.