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.
If you mean the vertical poles to which sails are attached, these are called masts.
If you mean the vertical poles to which sails are attached, these are called masts.
The vertical pole is called a "Mast". The horizontal poles (on 3-masted ships for instance) are called "Arms" or "Yardarms".
Mast (vertical, leading edge of sail), Boom (horizontal,bottom of sail), and a spinnaker pole if you use a spinnaker which is a sail type
It's the vertical post, wooden or aluminum that supports the sail(s).
sprit
Presuming you are referring to a gaff-rigged main sail, that diagonal pole would be the boom.
the pole that holds up the sail is called the mast
1) What do you mean by sail extender? The rope to hoist (raise) the sail is called the halyard. The vertical beam supporting the sail is the mast, the horizontal beam supporting the sail is the boom.2) It's called a SPRIT - see: Dictionary.com
A spinnaker pole or a whisker pole.
A spinnaker pole or a whisker pole.