of substitute nearly parallel to the principal stay, and intended to help the principal stay to support its mast triatic stay is a stay that runs between masts. On a ketch it runs between the main mast and the head of the mizzen mast and is used to stop the upper section of the mizzen mast being pulled backwards. On a steamer, an iron bar between the two knees secures the paddle-beams. (See funnel stays). See also Chainplate Unstayed Mast References Sailing rigs and rigging