To stop a full-rigged ship, except when running directly down wind, the sails of the foremast are oriented in the direction perpendicular to those of the mainmast. Thus, the masts cancel out of their push on the ship. This allows the crew to stop and quickly restart the ship without retracting and lowering the sails, and to dynamically compensate for the push of the wind on the masts themselves and the yards. Running downwind the sails still need to be lowered to bring the ship to a halt.