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.
By the summer of 1876, the parts of the model dynamo were ready for assembly. Brush returned to his old home, the Walnut Hills Farm, with the parts of the dynamo. Working in the workshop where he had experimented with electricity as a boy, he carefully wound the armature and electromagnets.he open coil design was unique to Brush's dynamo and it was often called an open-coil dynamo. Brush presented his dynamo design to George Stockley, VP and general manager of the Telegraph Supply Company of Cleveland. He believed that his design would prove superior to the Gramme.