ALEE Away from the direction of the wind, referring to the helm or the tiller . AMAS Outboard hull of a trimaran . The act of anchoring. A large and heavy device fastened to the boat by a chain and designed to grip the bottom , thus holding the boat in any desired location and preventing her from drifting at the mercy of wind, tide , or current . The chain acts partially as a weight to keep the anchor lying next to the ground so that it can dig in and better absorb changes in the boats position due to waves.
Chain holds up better than line when lying on rocks.
A knot used to fasten the anchor to the anchor line . A fitting with a small wheel that allows the anchor and chain to roll over when dropping or raising the anchor . Some anchor rollers also have a provision to store the anchor . A windlass used to assist when raising the anchor , can be manual or electric. An instrument used to measure wind velocity.