It's lift. Like an airplane wing, a sail is an airfoil only vertical. As it passes through the air, the curved shape of the sail causes the air on the outside of the sail to go further and therefore, faster, than the air on the inside of the sail. According to Bernoulli's Principle, when the airflow increases, the pressure drops so the pressure on the underside of the airfoil becomes greater and "lifts" or pushes the sailboat along. See the link below for more information on Bernoulli's Principle.
It is known as the wake of the boat.
It is known as the wake of the boat.
It is known as the wake of the boat.
A wake is a term for disturbed water as a boat moves.
The force which resists the motion of a boat when it goes through the water.
Wake
wake
wake
Wake
Wake
Wake
When a boat moves through water, the energy transfers from the moving boat to the stagnant water. The energy ripples through the water causing the wave-like movements.