"Buntline" is the nautical term for a rope at the bottom of a square sail. It is spin-deployed, with tip-masses in the corners of its square sail. It had a single mast with a square sail. A sailing ship crew manages the running rigging of each square sail. The ships have a single mast with a square sail. The rig was changed to barkentine (square sail on foremast only). Bowlines and clew lines shape a square sail. It also had a large square sail. He claims that the koch had a square sail and only one mast. Their ships had a single mast with a horizontal square sail on it. A typical koch carried one square sail on one mast. Faerings may carry a small sail, traditionally a square sail, in addition to oars. There is a fighting top atop the main mast, just above the large square sail. When the wind was aft a square sail was generally hoisted like a cross jack.