Several countries have purchased details of the former aircraft & agreed to some information sharing for smaller payments. The aircraft was first designed as a sub & was developed to defensive & front lines combat with very fast interception including high altitude rockets. The cannon was incendiary (magnesium) & used sulphur with other chemicals for percussion.
Get the shape into the water immediately, you can't crash it there. You slow it down by allowing water to flow around the engine. The plane used air & coolant as well as creating drag. Try this:
There is a water wheel generator.