Ship mooring cable method (wharf ship cable method)
The method of carrying cables for ships at the wharf
1.Sequence of top flow berthing with cables
In ports with currents, ships mostly use top current berthing. In order to prevent the ship from retreating due to the influence of the current during the berthing process, it is generally necessary to lead the head cable first, and quickly tighten the pull. After the hull touches the shore and is in place, bring the front falling cable and the front transverse cable. The tail is first with the tail cable, and then with the tail cable and the horizontal cable.
2. The cross wind is strong and the cable is smooth
When there is a strong blowing wind or blowing wind, generally the head cable is taken first. When there is no horizontal cable bollard, the head cable and the front cable can be taken at the same time, and quickly tightened. This can prevent the bow from being blown away by the blowing wind and get into trouble, and can prevent the stern from being rolled up too fast and touching the pier when the wind is blowing. Take the tail horizontal cable at the end first, and twist it as soon as possible.
How the ship is moored
In my opinion, there are the following points when a ship berths: 1. Loading and unloading cargo; When berthing at the shore, many things may be done at the near-water anchorage, because the berths at the wharf are very tight, and berthing is not allowed without special circumstances. Besides, one berthing and one departure will incur a lot of expenses such as tugboats, water diversion, and mooring release.
Precautions for ships with cables
Drift ice puts a lot of pressure on the anchored ship, especially when large pieces of drift ice lie on the anchor chain or the bow, they can neither break them nor flow through both sides. The more, the sum of the forces driven by the wind current on the ice will be exerted on the anchor chain. Therefore, when anchoring in drift ice, it is very easy to break the chain and take the anchor. Generally, it is not suitable for anchoring when the ice thickness exceeds 10cm. If anchoring is necessary, the length of the chain is generally twice the water depth. Even if the anchor is pulled, the chain should not be loosened, but the car should be driven on top of the ice, and the anchor should be lifted to continue. When anchored in fixed ice, there is no need to drop anchor. During anchoring, in order to prevent the running part of the windlass from freezing, it should be kept running at a slow speed. When mooring in ice, in addition to changing the value of the anchor, you must also pay attention to: beware of false appearances and strictly prevent anchoring, and judge the anchoring by observing the direction and dynamics of the anchor chain; use the rudder to avoid large ice blocks in time to prevent the anchor chain from slipping out.
The method of mooring the ship at the pier
1. Usually the first cable is the front guide cable, followed by the rear cable. After the front and rear cables are fastened, the ship adjusts the hull at this time. The wharf monitor or duty personnel should communicate with the ship in time to move the ship forward or backward. In order to align with the dock loading port.
2. In the process of winching in the cables, generally two cables should be twisted in at the same time, and the piles should be pulled separately. At the same time, pay attention to the uniform force on the two cables, and the number of cables for each mooring should not exceed 2.
3. After all the mooring cables are completed, the person with the cable should confirm with the ship whether the berthing is in place. If adjustment is required, please inform the ship how many meters to move forward or backward. If it is in place, the cable car personnel at the terminal should inform the ship in time so that the ship can brake the cable car in time.
4. Non-cable operators are not allowed to enter the job site