Principle of anchor:

The structure of ship anchor from top to bottom is anchor shackle, bolt, anchor rod, anchor handle and anchor wrist. The symmetrical parts on both sides are called anchor claws. The anchor claw is the most important part of the anchor in the soil. When the ship breaks down, the anchor sinks to the bottom of the water under the traction of the anchor chain.

In the water bottom, the plane of the anchor wrist will be perpendicular to the water bottom due to the action of the anchor rod, and the anchor claw will contact with the water bottom at this time. The length of the ship's anchor chain is often larger than the water depth, so the anchor chain in the underwater part is lying flat.

When the ship receives the disturbance, such as the crest wave, the anchor chain will be pulled, and the anchor at the bottom of the water will be affected by a horizontal force at the connection of the anchor chain. At the same time, the gravity of the anchor itself will act on the contact point between the anchor claw and the bottom of the water, and the combination of the two forces will make the anchor move under the syncline, which is the process of the anchor into the soil.

After the anchor is pulled into the bottom of the water, it can provide the ship with the ability of berthing. It should be noted that this ability can be achieved not only by one anchor, but also by a long chain.