The lookout post was atop the mast just as a birds nest might be at the top of a tall tree. From that vantage point the bird could see any potential threats that were approaching. The same is true with the lookout in the crows nest. They could see any other ships or reefs or anything that could cause a problem well before anyone on deck might see it.
It's called a crows nest.
A mast or also known as a big pole sticking out of the ships floor.
Different ships have different names for different areas.A Crows Nest is located high on the mast. The higher the lookouts position, the farther they can see over the horizon. This is the same as being able to see farther from a tall building than from down on the street.The area above the bridge is called the Flying Bridge.The areas on either side of the bridge are called the Bridge Wings.During periods of low visibility a lookout may be placed on the Bow or Focsle and another stationed on the Stern or back of the vessel.
crows build nests in places where they feel safe from possible predators, e.g up in a high tree or in a hedge. :) The term 'crow's nest' is also used when referring to the fixed lookout point at the top of the mast of a sailing vessel.
the lookout who was stationed at the top of the mast
the crow's nest
The lookout in the forward mast of the Titanic.
There are two possibilities:A crows nest can be the nest of a species of bird called a crow. These are big twiggy nests built in the tops of trees and as crows like to nest together, clusters of nests form which are called a "rookery". Rookeries are very noisy in the breeding season.The term "crow's nest" is also the name given the to platform at the top of the main mast of a ship. In the early designs it was simply a barrel or a basket lashed to the tallest mast. Later it became a specially designed platform with protective railing.
Overhead obstacles - such as power-lines or bridges.
The crow's nest is a lookout platform near the peak of a given mast.
The vertical pole is called a "Mast". The horizontal poles (on 3-masted ships for instance) are called "Arms" or "Yardarms".
The vertical pole on a sailboat is called the mast, but at the bottom of the sail is horizontal pole called a boom. On the Tall Ships, the horizontal pole AT THE TOP of the sail is called the yardarm.