The main function of the anchor is to fix and stabilize the ship, which can be considered from the following aspects:
1. For an anchor to work, the most basic condition is to wait for something to be hooked on the seabed.
If the anchor chain is not long enough, the anchor will not work. If the seabed is flat, or the thing hooked by the anchor is not fixed, or the hook is not very strong, it is okay if the sea is calm, but once the waves are too big, the anchor cannot hook things, and the anchor will lose its function. , this is called “anchor slipping”. It is very dangerous for the ship to slip anchor while it is anchored.
2. The weight of the anchor chain is negligible for the ship, so it will not play a big role.
Generally speaking, when a ship is anchored, the anchor chain is straight. Do you think there will be any friction on the anchor chain at this time? If you are on the beach, you will find a lot of small fishing boats with thick ropes.
3. When viewed from the ship, the anchor chain is straight, but under water there is a section that is close to parallel to the seabed. In fact, the anchor close to the seabed provides gripping force, which is then transferred to the ship through the anchor chain, thereby resisting ocean currents. , The influence of external loads from wind and waves on positioning. The reason why there is a section close to the seabed is to consider the influence of force. Having a section close to the seabed can provide a margin, which is acceptable within a certain range.
The weight of the anchor is not large, but there are regulations on how large an anchor should be for a large ship. This is due to the gripping force that the anchor can generate and its own inertia. The friction of the anchor chain also plays a role.
Post time: Jul-27-2024