Characteristics And Functions Of Ship Anchors

The main function of a ship anchor is to fix and stabilize the ship. Anchor is an indispensable equipment for ensuring the safety of ships. Ship anchors mainly consist of anchor crown, pin shaft, anchor claw, anchor handle, anchor rod (also known as crossbar or stabilizer bar), and anchor release buckle.
Characteristics and functions of ship anchors:
1. The basic condition for an anchor to work is to hook onto something at the bottom of the sea. If the anchor chain is not long enough, the anchor will not work. If the seabed is flat, or if the anchor is not fixed, or if the hook is not too firm, it can be fine if the waves are calm. However, if the waves are too large and the anchor cannot hold onto something, it will cause the anchor to lose its function, which is called "anchoring". During the anchoring period, it is very dangerous for the ship to anchor because the main engine is usually stopped when the ship is anchored. If the ship sails immediately, it will take time, and it is very dangerous for the unpowered ship to drift around. So, that's why the concept of anchorage came into being. Anchorage implies that the seabed is relatively rough, and it also needs to be able to shelter from wind.
2. The weight of the anchor chain is negligible for a ship, and the frictional force will not have much effect. Also, if you pay attention, generally speaking, when a ship is anchored, the anchor chains are straight. Do you think there will be any friction on the anchor chains at this time? If you are by the seaside, you will find many small fishing boats with thick anchor chains.
3. From the perspective of the ship, the anchor chain is straight, but underwater there is a section of anchor that is close to parallel to the seabed (actually attached to the seabed) to provide grip, which is then transmitted to the ship through the anchor chain to resist the influence of external loads such as ocean currents and wind waves on positioning. The reason why there is a section that is attached to the seabed is to consider the influence of force. Think about it, an anchor with a straight anchor chain can easily move away with just one pull, while there is a section that is attached to the seabed and can provide a certain margin within a certain range. The weight of the anchor is not large, but there are regulations on how large the anchor should be for a ship, which is due to the factors of the grip force that the anchor can generate and its own inertia force