What is the function of the anchor
The main function of the anchor is to fix and stabilize the ship. From the following aspects.
1. For the anchor to work, the most basic condition is to hook something on the seabed.
If the anchor chain is not long enough, the anchor will not work. If the seabed is flat, or the anchor hook is not fixed, or the hook is not strong enough, if the wind is calm, it's okay, but once the waves are too large, the anchor can't hook things, and the anchor will lose its function. , this is called "walking the anchor". It is very dangerous for the ship to walk the anchor during the anchoring period.
2. The weight of the anchor chain is negligible for the ship, and that point will not play a big role.
Generally speaking, the anchor chain is straight when the ship is anchored. Do you think there will be any friction in the anchor chain at this time? If you are at the seaside, you will find that there are many small fishing boats, and the anchor chain is a thick rope.
3. Viewed from the top of the ship, the anchor chain is straight, but there is a section under water that is nearly parallel to the seabed. In fact, it is the anchor attached to the seabed to provide grip, and then passed to the ship through the anchor chain to resist the current. , The influence of external loads of wind and waves on positioning. The reason why there is a section close to the seabed is to take into account the influence of the force, and there is a section close to the seabed, which can provide a margin, which is acceptable within a certain range.
The weight of the anchor is not large, but there are regulations on the size of the anchor for the size of the ship. This is because of the gripping force that the anchor can generate and the factors of its own inertia, the anchor chain friction also plays a role.