Halyard, mast and boom (or yardarm) support the sails.
adherant
to remove a sail
You can call them an ally, supporter, or advocate.
Fair weather supporter
A sailmaker
A flotilla.
Hauling or setting
A lateen sail. Was/is able to be moved left or right. It made/makes ships easier to turn.
A person who boosts your morale is often referred to as a cheerleader, supporter, or motivator.
sails?
The mast is the upright mailsail holder. A sprit is a pole that extends diagonally across a fore-and-aft sail from the lower part of the mast to the peak of the sail. Also see bowsprit. All are called sail holders. Tks, Sina.