The pole you are referring to is called the mast. If the boat only has one mast it is usually not in the middle of the boat but is normally found in the forward third of the boat.
It is called the mast
The pole on a sailboat that holds the sails is called the "mast." It is a vertical structure that supports the sails and rigging, allowing the boat to harness wind power for propulsion. The height and design of the mast can vary depending on the type of sailboat and its intended use.
It is called mast.
The middle of a sailboat that holds up the sails is called the mast. The mast is a vertical pole that supports the sails and rigging, allowing the boat to harness wind power for propulsion. It is typically made of wood, aluminum, or fiberglass, depending on the boat's design and purpose. The sails are attached to the mast with various lines and hardware to facilitate adjustments for optimal sailing performance.
Masts, or see: http://wiki.answers.com/Q/What_are_ship_poles_calledfor a more indepth answer.
Mast
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
A pole on a sailboat used to hold sails is called a "spar." Different types of spars include the mast, which supports the sails vertically, and booms, which extend horizontally to control the angle of the sail. Spars are essential for the rigging and overall functionality of the sailboat.
Is called a mast
Do you mean the mast?
A pole on a boat that holds spars or sails.
a pole on a sailboat is a mast