A sail is a broad sheet of canvas, used by ships for catching the wind and pushing forward. It’s a period charge, found in the canting arms (Italian vela) of da Velate, mid-15h C. [Triv 366]. The form shown in period arms is triangular (cf. also Guillim1 215); and this is the only permitted form for Society armory, pending documentation.
The King of Trimaris bears as a badge: A sail fastened to its mast and hanging from its yardarm azure.
Morgan Grey Beard bears: Argent, a sail vert fastened to its mast and hanging from its yardarm sable.