I’ve heard that story in the wind, in the clatter of the forge. The iron‑topped sails need an alloy that can take a gale and still hold its shape, so I’d start with wrought iron, mix in a pinch of carbon and a touch of manganese from old mines. Heat it until it’s just right, then hammer it under a steady rhythm, letting the iron flow into the pattern of a sail’s frame. After a hard quench and a slow temper, you’ll have a strip that’s as tough as a storm and light enough to flutter like a feather. It’s all about patience and letting the metal breathe.