Modifies a noun

• ship: The lowest sail on a mast of a square-rigged ship.

• vessel: The proper and dexterous handling of firearms seems to be fading from the screen - along with the management of a square-rigged sailing vessel.

• boat: The harbor itself is a base for a fleet of square-rigged sailing boats often used, as is the harbor itself, for filming.

• sail: The Red Sea galleys with their auxiliary square-rigged sails were probably the forerunners of the sailing ships.