Once preparations to set sail with your crew are complete, take the helm to steer the ship directly with [WASD].
Unfurl the sails with [Shift] and furl them with [Alt] to adjust your speed.
While sailing, your vessel will be affected by sea breezes, which vary in direction and intensity depending on the time and location.
When wind blows from behind, the square sails unfurl, allowing you to sail with greater ease aided by the wind. When sailing into a headwind, the square sails will not unfurl, and you will sail unaffected by the wind.