The role of the boat anchor is mainly to fix and stabilize the boat. Anchor is the indispensable equipment to ensure the safety of the ship. Anchor mainly consists of anchor crown, pin, anchor claw, anchor shank, anchor rod (also called crossbar or stabilizer rod) and anchor shackle, etc.
The characteristics and role of anchor.
For anchor to work, the basic condition is to hook something at the bottom of the sea, etc. If the anchor chain is not long enough, the anchor will not work. If the seabed is flat, or the anchor hooked something is not fixed, or the hook is not too firm if the wind is calm, but the waves are too big, causing the anchor can not hook something, will make the anchor to lose its role, this is called "walking anchor", the ship at anchor, walking anchor, is very dangerous, because the ship at anchor when the general The main engine is stopped, if immediately open the ship, need time, no power to drift around the ship is very dangerous. That's why there is the concept of anchorage. Anchorage, by implication, is rougher under the seabed, and in addition, it should be able to avoid the wind.
2. The weight of the anchor chain is negligible for the boat, the friction, will not play much of a role. In addition, if you pay attention to, generally speaking, when anchoring the boat, the anchor chain is straight, you think this time the anchor chain will have any friction? If you are at the beach, you will find a lot of small fishing boats, their anchor chains are thick ropes.
3. On top of the boat, the anchor chain is straight, but there is a section underwater that is close to parallel to the seabed (in fact, it is against the seabed) to provide the anchor with gripping force, which is then transferred to the ship through the anchor chain to resist the influence of external loads from currents, wind, and waves on the positioning. The reason why there is a section against the seabed is to take into account the impact of the force, think about it, an anchor, the anchor chain is straight and easy to pull the anchor, while there is a section against the seabed, can provide a margin within a certain range is possible. The weight of the anchor is not much, but how big the boat with how big the anchor is specified, which is due to the anchor can produce the grip force and its own inertia force factors.
