1) Bow beam to support anchor 2) Sailboat component 3) Timber for the anchor 
A cathead is a large wooden beam located on either side of the bow of a sailing ship, and angled forward at roughly 45 degrees. The beam is used to support the ship`s anchor when raising it (weighing anchor) or lowering it (letting go), and for carrying the anchor on its stock-end when suspended outside the ship`s side. It is furnished with shea.....
A beam extending out from the hull used to support an anchor when raised in order to secure or 'fish' it.
A beam extending out from the hull used to support an anchor when raised in order to secure or 'fish' it.
projection near the bow of a ship to which anchor is secured
projection near the bow of a ship to which anchor is secured
Short, port and starboard wood or iron beams projecting over the bow for raising an anchor.
• (n.) A projecting piece of timber or iron near the bow of vessel, to which the anchor is hoisted and secured.
a spool-shaped attachment on a winch around which rope is wound for hoisting and pulling. 
Cat'head` noun (Nautical) A projecting piece of timber or iron near the bow of vessel, to which the anchor is hoisted and secured. 
The cathead is a piece of timber outside a ship where the anchor is hung to keep it clear of the vessel. An anchor so positioned is known as being 'catted'.
A collar or sleeve which fits loosely over a shaft to which it is clamped by setscrews.