What are the casting methods of anchor

Ship anchoring is a common method of berthing. The process is roughly as follows: the anchor connected by anchor chain or cable is thrown into the water to land, and it is made to mesh into the soil. The grip force generated by the anchor is consolidated with the bottom of the water, and the ship is firmly tied to the predetermined position. According to different water area, meteorological conditions and operation requirements, the casting methods of the anchor are different. The common methods are first anchoring, tail anchoring and head tail anchoring.

1. Bow anchor

There are two kinds of anchoring in bow, single anchoring and double anchoring. In general, only one anchor can fasten the ship, and only when the wind and waves are very large and the anchorage is very narrow can two anchors be cast. When anchoring in the bow, the external forces such as wind force, current force and wave impact force on the hull are the least, so this way is the main way of anchoring, and also the main reason why the main anchor is arranged in the bow. Generally, there is only one head anchor on a small ship and fishing boat. In addition, there are two main bow anchors on the bow of any ship. When the captain reaches a certain degree, another standby main anchor, also known as anti wind anchor, shall be set on the ship.

2. Astern anchor

Anchoring at the stern is often used for river boats and landing boats. In order to ensure safety and avoid turning around, the ship's stern is often used to anchor when it is sailing downstream. In the operation of landing ship retreating from the beach, with the cooperation of the main engine, the ship resting on the beach is pulled down from the beach by the pulling force of the windlass.

3. Head and tail anchoring

If you want to make the berthing ship always be on the side of the ship, when facing the wind direction, you should use the way of anchoring head and tail. The method of anchoring from head to tail is generally to throw out the main anchor from the windward direction, connect a cable from the stern around the outside of the ship's side with the main anchor chain that has been thrown out, and then release some main anchor chains. The other method is to throw out the tail anchor from the tail after the first main anchor is thrown out. The tail anchor is usually carried out and thrown down by small boats. The tail anchor is generally smaller than the main anchor, about 1 / 3 of the main anchor.