How do thousands of meters deep-sea ships break down? Is the anchor chain directly placed thousands of meters on the seabed?

Anchoring is also called anchoring. The act of berthing a ship safely by using the mooring force of anchor and anchor chain. Ships often break down in order to load and unload goods, shelter from the wind, wait for berths, wait for pilots, quarantine and tide. There are two kinds of throwing single anchor and throwing double anchor. Before anchoring, you should choose the anchor position and make full preparations to ensure the smooth progress and safety of the anchoring process. Attention should be paid to anchor timing: (1) Generally, the principle of top flow is adopted for anchor timing. When the ship slowly approaches the anchor against the wind or the top current, stop and reverse in time, anchor with slight backward or forward inertia, and loosen the anchor chain so that the anchor can grasp the seabed. In this process, the rudder and anchor chain should be used to adjust the inertia of the ship and the force of the anchor chain until the ship enters the anchoring state. (2) The left and right anchors should be used in turn to prolong their service life. (3) Anchor when the wind is strong, and there should be enough water depth under the ship. You can throw two anchors for berthing, such as "eight anchors" and "one anchor". (4) If the water depth exceeds 25m, it can be anchored in deep water. Loosen a part of the anchor chain first, and use the brake to control the anchor chain to throw the anchor down. If the water depth exceeds 50m, the anchor chain must be loosened by the windlass until the anchor touches the seabed, then the hull retreats very slowly, so that the anchor claws are stressed, and then the anchor chain is slowly loosened to the required length. Generally speaking, you should try to avoid anchoring in the deep sea.