I need definitions of ship EquipmentMain switchboard:Distribution bus bars:Ship service generators:Main Engines:Prime mover:propulsion generators:propulsion motors:
It is assumed that this enquiry is in respect of large cargo or passenger vessels, not little pleasure boats. Main switchboard. This is the electrical switch panel to which all of the supplies from the service generators are led and from which all supplies to engineroom electrical equipment, deck machinery and the ships general electrical equipment, galley, navigation equipment, lighting, ventilation etc are supplied. The main switchboard comprises distribution bus bars, switches, meters and on AC ships, now in the the majority, the equipment required to synchronise the phases of the service generators. The distribution bus bars are the principal electrical conductors to which the generator outputs can be switched and from which the circuits to the rest of the ships electrical equipment are supplied. There are usually four bus bars, three carrying electricity at 415 or 440 volts three phase and a neutral bar. The current is usually supplied with a frequency of 50 Herz or 60 Herz. Ships service generators are in modern ships alternator units which supply all electrical requirements with the exception of the ship's propulsion. They are normally powered by diesel engines or steam turbines and in some naval vessels by gas turbines. Main engines. This term is invariably used for the vessel's propulsion machinery. Prime mover. This is a general term not restricted to marine practice for any machine the converts the energy of a fuel or the heat energy of steam into kinetic energy. Propulsion generators. These can be DC generators or AC alternators which have outputs dedicated for ship's propulsion purposes. The are usually connected independently of the main switchboard via a dedicated propulsion switchboard. Propulsion motors. These are electric motors which drive the ship's propellers. They are usually inboard but many modern cruise ships have their propulsion motors within pods which are outside of the main hull.
Main switchboard: Is the circuit panel board that controls both 110v and 12/24 volt lighting and accessories. Much like your panel box at home. Distribution bus bars: When adding anything electrical to a boat, you use a distribution bar located centrally instead of running wires to the batteries or panel box. There is a positive bar and a negative bar. One wire will run from the bar to the battery, and that is how the bar gets power. Most bars contain 6 or 12 screws, and you attach your addition's wires to the bar. Bars can be made to handle both 110v and 12v. Ship service generators: are usually diesel or gasoline powered motors made to produce electricy. Larger boats and ships use generators to power 110v items such as air conditioning, refrigeration, etc when away from the dock. When at the dock, a large power cord is used to feed 110v to the boat, from a dockside power pedestal. Main Engines: Are the engines used to power the boat's forward and reverse movement through the water. Prime mover: is something used within the propulsion system of a ship. It efficiently transfers power from the engine to the drive shaft.similar to a transmission in a carI think, I am not 100% sure on this one. propulsion generators: are geberators that run off the main engine. On a car we use an alternator to produce 12v for lights, etc.but to power 110v items you need a generator. propulsion motors: These could be the same as the Main Engines, or it can mean the motors that power a ship's bow and/or stern thruster, which moves the boat in a sideways direction. Used mainly for docking.
relies upon on the country. worldwide waters: specific they are able to, regardless. maximum first-worldwide international locations require licensing of a few style, yet 0.33 worldwide international locations in many circumstances do not.
