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Fire ship, how to manipulate a flexible solution with the anchored ship safety
Time:
2010/2/1
Water Fire is a special environment, operating force to the safe operation of water and ships to explore knowledge, to help the officers and men to better complete the fire fighting and rescue tasks, I was a long struggle in the water on a fire front three non-commissioned officers, on the ship to manipulate how the flexibility of the ship anchored in order to solve the safety to talk about their shallow opinions.
In the sail, the anchors role is very important, correct and rational use of anchor handling vessels will give us the convenience and security. The anchor to use several types, such as mooring operations, berthing operations of rescue operations and other security operations, lets take a look at several aspects of how the anchor will play each unexpected effect.
Ship berthing process, can be used to supplement the ships own anchors berthing operations. Affected by the tide at the port, usually driven by top-flow method, according to the actual tonnage of ships, loading conditions, the wind area, ship maneuvering performance, and live weather conditions at the time, decided to pass by the ships speed, berthing angle and using vehicle time. After considering these factors, we can carry out specific operations of the. For example, the left-string berth when we prepared the right on the anchor, this time is best to anchor claw about 1m away from the surface of the water, if the winds blowing Long large, can be appropriately widened sub-block, so that the lower edge of the bow arrived in port to maintain and Pier horizontal distance three times the ship width distance. Press Left full rudder to control the speed in the two below, and to maintain a certain angle. When the bow near the edge of the pier, the throwing right-anchor, to send chain length according to the depths of water, the actual shop chain, 20m or so, and then stopped. Such grasping force control through the anchor the bow to the port speed to offset the role of the wind blowing Long, together with an auto-rudder, you can achieve the safe berthing purposes.
When the wind blowing open a larger role in the flow is small, in the absence of collaboration with the tug of a ship berth would be very difficult. Because the ship near the port, due to the wind blowing open the role of the bridge subject to wind the larger, so the ship would begin and end the line and the terminal angle increases, the ship is difficult to paste Long Wharf. In order to control the bridge and not to the relocation, you must drive to increase rudder effectiveness, so that will create another problem, that is, the ship near the pier, a car will increase the speed. How can both increase the speed as well as lower steerage do? Method of dragging anchors can be used for this purpose. Specific operations are as follows: When the lower edge of the ship near the pier at the park when you prepared to let the ship anchored state, as far as possible at lower speeds near the pier. When they find there is no steerage, the pressure right full rudder, entered the car, while throwing right-anchored 1-2 into the water, in this step, the visual depth is determined basically maintained shop chain length of about 20m when stopped! So , due to drag anchor role, the speed will be rapidly declining, and the instantaneous flow of car exhaust generated will increase the rudder effect, the stern will be closer to the pier, to overcome the role of the wind blowing to the successful completion of berthing task.
If and when the ship got out of control, in order to control the dangerous situation, how to use the anchor to carry out an emergency hedge it?
When the ship went out of control due to the host, the first consideration should be the place to drop anchor, so as to avoid collisions, groundings and other damaging loss. Anchoring requirements which are more technical and difficult high, according to the ships actual situation. In any case, we should be able to anchor safely and not thrown to the anchor chain fracture occurs, resulting in lost anchor is considered a success. Without warning, the ship is out of control, which often make drivers caught by surprise. Therefore, maintaining a cool head, analyzing the surrounding environment, and then according to the actual ship speed, draft, tonnage and so decided to use the anchor method.
I through access to relevant cases, summary concludes that when the speed is too fast or too large tonnage, when, in other words, that is, when the ship inertia is too large, to the department through the anchors and chain cables in power the ship to stop, must control a chain length of the rule of thumb: Inertia G with a chain length L is inversely proportional to. Of course, a chain length can not be too short, otherwise there is no large enough to drag anchor tension can not be to control the speed effect.
Several speakers used the following to manipulate anchor method.
1, throwing a single anchor to turn around operations.
When the ship in restricted waters and need to turn around, first of all a good boat speed should be controlled, maintenance and which is only anchored by a U-turn directions, generally with the U-turn in the same direction, which direction out on which side of the anchor used. When broken down according to the decision depth of a chain length, while observing the anchor chain direction of the rudder with the car to complete U-turn operations.
2, the use of anchor chain tension to ship off shallow operations. In this way the smaller tonnage of ships in general, and the tension should not be required to de-light is too large. The specific method is: The boat will be anchored send 4 or so, and then throwing anchor in the water, and then through the stranding machine stranding the ships anchor chain cables, so that anchor catch on at the end of the quality, the anchor chain generate tension, pulling the ship ran aground off light .
3, other special circumstances with the anchor manipulation operations. For example: There are beginning and end tail anchor of a ship anchoring operations; anchor line single buoy operations; in order to control the speed and flight operations broken down to lag, and so on.
As I continue to deepen professional knowledge and practical experience constantly sum up, I will work with the anchor for the ship to conduct a comprehensive summary of successful practices, will also sort out a package suitable for the water to follow the success of fire officers and men of law.
