on most boats today there is one verticle "pole", the mast. one horizontal "pole" the boom. on older boats like scows and optimists the diagonal pole is called the sprit. there can also be a spinnaker pole which you clip onto the mast to hold out the spinnaker on a run or a reech. on a asymmetric boat the spinnie pole is pulled out when the spinnie is raised, you cann't and shouldn't clip it onto 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 the mast
Masts, or see: http://wiki.answers.com/Q/What_are_ship_poles_calledfor a more indepth answer.
It is called mast.
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 holds (supports) the sails. You can also mount navigation systems on it.
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 boat that holds spars or sails.
a pole on a sailboat is a mast
its sails
Mast
The correct spelling is "sailboat" (boat propelled by sails).