Recent Blogs
Hermaphrodite Brig: Sail-Area Coordinate Calculator | FIRGELLI
Compare an entered sail-area centroid with a lateral-resistance coordinate. This geometric comparison does not predict helm angle, sailing behavior or a suitable rig.
Brigantine Sailing Rig Explained: How the Two-Masted Square and Fore-and-Aft Mechanism Works
Explore a brigantine’s square foremast, gaff mainsail and headsails, then compare sail area and displacement using the dimensionless SA/D ratio.