the keel
A main longitudinal structure along the bottom of the sailboat called the keel. This is what prevents it from tipping over.
round bottom hull
A junk.
dhow
The question should be "What is aft on a sailboat?" since it is a direction, not a thing. Aft (or after) is anything toward the rear of the boat.
It is called the lateen sail.
Is called a mast
That would be the deck.
a touch scream
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
Um.........you just said the answer. its called a sail
The first sailboat is in the picture frame. The second is in the spider web northwest of the five flags. The last one is in the bottom of the right sail in the rafter.