The main function of the anchor is to fix and stabilize the ship. From the following aspects.
1. For the
anchor chain to work, the most basic condition is to hook things on the seabed. If the anchor chain is not long enough, the anchor will not work. If the seabed is flat, or the anchor hooked is not fixed, or the hook is not strong enough, if the wind is calm, it is fine, but once the waves are too large, the anchor cannot hook something, and the anchor will lose its function. , This is called "walking the anchor". It is very dangerous for the ship to walk away during the anchoring period, because the main engine is usually stopped when the ship is anchored. If you start the ship immediately, it will take time. dangerous. Therefore, there is the concept of anchorage. Anchorage, the implication, is relatively rough under the sea, and in addition, it must be able to shelter from the wind.
2. The weight of the anchor chain is negligible for the ship, and that little friction will not play a big role. Generally speaking, when the ship is anchored, the anchor chain is straight, which is basically the effect of friction. If you are by the sea, you will find a lot of small fishing boats, their anchor chains are thick ropes.
3. Viewed from the top of the ship, the anchor chain is straight, but there is a section under water that is close to parallel with the seabed (in fact, it is close to the seabed). The anchor provides grip, and then transmits it to the ship through the anchor chain to resist the influence of the external load of the current, wind and waves on the positioning. The reason why there is a section close to the seabed is to consider the influence of the force. Think about it, an anchor, the anchor chain is straight and easy to pull the anchor. And there is a section close to the bottom of the sea, which can provide a margin within a certain range.
