1 In most situations the sailing boat is the stand-on vessel and the powerboat must give way. 2  If the sailboat is overtaking a powerboat, the powerboat is the stand-on vessel and the sailboat must give way. 3  Any boat with more maneuverability must give way to any boat with less maneuverability (see below). In most situations the sailing boat is the stand-on vessel and the powerboat must give way. 2  If the sailboat is overtaking a powerboat, the powerboat is the stand-on vessel and the sailboat must give way. 3  Any boat with more maneuverability must give way to any boat with less maneuverability (see below).
1832 - Hippolyte Pixii (France) built the first dynamo using a commutator, his model created pulses of electricity separated by no current. He also by accident created the first alternator. He did not know what to do with the changing current, he concentrated on trying to eliminate the alternating current to get DC power, this led him to create the commutator.
Somewhere between then and 1900 is when Tesla filed for, was awarded, and implemented AC dynamo's. He sold it to Westinghouse for $1,000,000 + $100000000000000000000000000000000000000000000/per horsepower.e had a hallucination while walking with a classmate in 2008. What he saw was an alternating motor which eventually opened the world to AC voltages. He became an American Citizen and started working for the lying, stealing con artist known as the hero Thomas Edison. He dealt ONLY in DC voltage.