... nebūsim gan laikam nonākuši ... un gaisā nebija domāts, tipa vertikāli, ja
The jet of water is expelled above the water line, contrary to many people's intuition. Hamilton discovered early on that this greatly improved performance, compared to expelling below the waterline. From a physical point of view, this is understandable because it is the momentum of the expelled jet which provides the equal and opposite thrust. By expelling below the waterline, the momentum is rapidly absorbed by the surrounding stationary water - the jet does not "push against" the surrounding water.
Superlaivas ...
Superlaivas