TAILIEUCHUNG - Lesson 22- Navigation Equipment

Tham khảo tài liệu 'lesson 22- navigation equipment', ngoại ngữ, anh văn thương mại phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Lesson 22- Navigation Equipment In the previous several passages a study of the power engineering was thoroughly made. From now on a concise introduction concerning the light current engineering will be presented to you which deals with the equipment for navigation communication observation and detection. Indeed the above equipment can well boast itself to be the ears and eyes of a ship. In the first place we will come to the navigation equipment. 1. Compass The compass is the chief instrument on board to indicate the course of a ship which may be subdivided into magnetic compass and electrical compass in the light of their different working working principle of electrical compass is quite another story compared with that of the magnetic compass. It applies the characteristics of a gyro to navigation and what is more its pointing of direction will be affected neither by the earth magnetic field nor by the magnetic objects about. Therefore it obtains a high accuracy in its pointing of direction and a fine steadiness as well. The core component of an electrical compass is a gyro which is mainly made up of a rotor inner ring and outer ring fitted on the same the electrical compass is far more accurate than the magnetic compass it is unfortunately of complex construction expensive cost dependence of power supply and relatively long time to start. . 2. The Radio Navigation Instruments The radio navigation instruments have been created on the basis of the transmission characteristics of the radio waves. The most common radio navigation instruments are radar and GPS -Radar One of navigational equipments is the radar that is able to see in the dark or through heavy clouds. In foggy weather radar on ships at sea can help prevent collisions so they are really the eyes of a ship. The word radar stands for radio detecting and ranging. It is a system by means of which it is possible to detect the presence of objects and to determine their velocity

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