Unrigging the sails of a boat is the process of taking down the sails and removing the rigging that holds them in place. This is usually done when a boat is not in use or when it needs to be transported. Dismantling the sails of a boat is an important part of boat maintenance and safety. It ensures that the sails are properly stored and that the rigging is not damaged or worn out. Unrigging the sails also helps to reduce the risk of accidents and damage to the boat.