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.
Please try again later. Tesla's Dynamo-Electric MachineNikola Tesla, a famous physicist, had plenty of ideas about how to receive power. And one of them was getting it from environment. It wasn't long before Tesla realized that a regular electric machine would not be able to directly get power from the space.lease try again later. Tesla's Dynamo-Electric MachineNikola Tesla, a famous physicist, had plenty of ideas about how to receive power. And one of them was getting it from environment. It wasn't long before Tesla realized that a regular electric machine would not be able to directly get power from the space.