Index Card 23

http://en.wikipedia.org/wiki/Anchor

• An anchor is an object, often made out of metal, that is used to attach a ship to the bottom of a body of water at a specific point.
• There are two primary classes of anchors—temporary and permanent.
• The vessel is attached to the anchor by the rode which is made with chain, cable or line or a combination of these. The hole in the hull through which the anchor rode passes is called "hawsepipe" because thick mooring lines are called "hawsers".
• An anchor works by resisting the movement force of the vessel which is attached to it.
• There are two primary ways to do this—via sheer mass, and by "hooking" into the seabed.
• Seabed means the bottom of the sea.
• Fisherman, Fluke, Grapnel, CQR/Plough, Bruce/Claw, Mushroom, Deadweight, and Screw are all types and styles of anchors.