the boom
The vertical post is the mast, and the horizontal post is the spar. Both are required.
It is called the lateen sail.
Um.........you just said the answer. its called a sail
A sail boat or yacht.
In modern sailboats, the sail is attached to the mast or boom of the sailboat. In older sailing vessels, the sail would be attached to either a mast or a yard.
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
Um.........you just said the answer. its called a sail
Making the sail area smaller is called reefing.
yes
BOOM
Tom sail on a ship called DO