It depends what type of sailing ship: Modern, racing dinghies have between 1 and 3 Old, battleships like those in Pirates of the Caribbean can have 15 or more! In general though, a sailing boat has...
One large sail. The sail was made with woven wool from goats; not just any goat, but goats with waterproof wool. These goats are still found in Norway - my great uncle has a few in Bergen. ^where in...