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Determine the ship will encounter posture


; For large container ships, large area due to wind, low-speed steering alone is difficult to control when navigating the ship; In addition,[link widoczny dla zalogowanych], various special ships, such as the buoy laying vessels, engineering ships, ro-ro and passenger ferry, etc. should be in the low-speed conditions under near target. All of these factors promote the emergence of the thruster and development. At present, many new ships and special ships are installed side thruster. Installation of such devices ship, its maneuverability, especially in low speed maneuverability can be significantly improved. Such as installation of a bow thruster of the container ship during the port manipulation,[link widoczny dla zalogowanych], such as pulling in? White and collision avoidance can be used when the bow thruster (in the car,[link widoczny dla zalogowanych], under the action of the rudder) to make the ship in case of low speed of the ship easily have turned around or lateral displacement, lateral displacement of the lack of ability to change the status of the ship. 2 thruster thruster structure is usually bow or stern of the hull below the waterline for the transcontinental pipeline, built-in propeller, jet produced by the propeller thrust, and thus divert the ship to achieve. Including those for the bow at the bottom of the bow thruster (bowthruster), who was installed in the bottom of the stern stern thrusters (quartthruster). Because there is stern propeller and rudder equipment, so stern thruster installation process complexity, the cost is relatively high, so the ship is only equipped with side thrusters arranged in the forward part of many. Thruster was first driven by the host through the transmission device, and later evolved into a prime mover driven by an independent and multi-use variable pitch propellers for propulsion, remote control directly at the bridge, and its speed is generally 2 ~ 3, By manipulating the handle (or button) will be able to control the rotation direction and speed, to control the ship's purpose. In order to increase the use of bow thrusters effect, and some other ships also opened its back and around a hollow tube through the balance (see Figure 1). Figure 1 Schematic diagram of bow thrusters 3 towing twisted into the causes of side thruster, \Thruster operation, the intake diversion hole will have a huge suction field, if the streamer at this time just in the vicinity of the population smoke, it is easy inhalation diversion hole. \More new ships are built with a tunnel thrusters,[link widoczny dla zalogowanych], due to the current tug towing tug or twist the cable one side of the bow thruster incidents are not common, when the crew of the untwisting also not very great importance to note that the incident should arouse the vigilance of the shipping companies and crew. Large vessels tied solution in Tug in dock hauling rope or cable when the bow of the ship should be shut down thrusters, which is to prevent cable twist into the side thruster of the most secure measures. Waigaoqiao Shanghai Maritime Safety Administration of Marine Ma Hongtao Wang Suning ( If the ship is in waters of poor visibility or in the vicinity and he made manipulate the characteristics of the situation of these will be further divided into a variety of opportunities are not ships encounter, constitutes a visibility bad encounter situation,[link widoczny dla zalogowanych], both have an equal responsibility to avoid collision with the situation, so as to realize collision avoidance mode of operation of the self-avoid responsibility. Dynamic decision-making. Where: C as the target ship course; C. Ship-based course; B target
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