Can Anyone explain briefly how an anchor is used to stop boats from moving ?

go ask Metal Shark Player, he use anchor to sail boats|||Many anchors are designed to work in one of a couple of ways. Some anchors are designed with sharp and protruding edges to grasp the bottom of lake bed or ocean thereby offering resistance to the boat being moved by the movement of the water and wind. Other anchors are fairly generic in design but are quite heavy and again are used to provide resistance to the movement of the boat. On larger boats it is not entirely uncommon to use more than one anchor to provide stable mooring.|||In a word, NO, not briefly. The subject is quite complex so I must request your indulgence.


Anchors are either temporary or permanent. When permanent, it is usual to describe them as moorings.


Temporary anchors generally fall into two categories, sea anchors and anchors intended to sit on the sea or river bed. Sea anchors are used to keep a vessel's head to the weather, (wind and waves), but do not prevent the vessel from moving.


That leaves the other kind, generally just referred to as anchors.


The principal purpose of an anchor is to enable the deployment of the rode. Rode is the term which describes the cable or line which connects the anchor to the vessel. The rode will lie on the sea or river bed for a distance before it turns towards the surface in a catenary curve until it reaches the vessel. It is the MASS of the rode which provides the anchoring force. If the forces acting on the vessel causes it to move away from the anchor, more of the rode will be picked up from the sea bed and the tension at the point of attachment on the ship will increase. If the vessel moves towards the anchor, more of the rode will lie on the sea bed and the end load will decrease. It is physically impossible for the rode to assume a totally straight line between the vessel and anchor. You must take my word on this. The mathematical rules which define end loads and angles of catenaries are too complex to spell out here as well as being only capable of solution by an iterative process. It is suffice to say that as a catenary approaches a straight line the tension approaches an infinitely high value. The result would be a movement of the anchor relative to the sea bed (dragging) or an equipment failure. Either way there would have been a failure to prevent the vessel from moving, which was the subject of your question.|||actually it doesn't stop it moving it just fixes it to the seabed as the boat will be moving constantly while there is a wind %26amp; tide the size of the anchor depends on the size of you craft also the length of chain that needs to be attached to the anchor before the rope is attached to it these are all determining factors that need to be taken into when purchasing the right equipment|||Hi, welcome aboard Yahoo! Answers, Mike!





Yes, I can!





First, position the specified boat directly beneath the cathead of a suitably large vessel, carrying shall we say, about a sixty ton anchor?





Then release the said anchor! ...





BANG!





That should stop most things from moving!!





Please see the following:





http://www.youtube.com/watch?v=9p8AJ93Wh鈥?/a>





Hope this helps.





(Answers chosen on merit: one account).





-|--)|||Quite a bit like a ball and chain shackled around a convict's leg. To move the boat or convict must drag along the anchor or ball respectively Less than 30 words, does that work for you?.|||Friction.