Recent Blogs
Schooner Rig Explained: How a Two-Masted Fore-and-Aft Sail Plan Works, Parts and Drive Force
Schooner rig explained — how the fore-and-aft two-mast layout drives offshore sail-training vessels, with sail-area math, worked example, and trade-offs.
Topsail Schooner: Historical Rig and Sail-area Comparison
Explore a square-topsail schooner rig and compare entered sail area with displacement. Also convert weight and compare area and angle inputs; no sailing performance is...
Full Schooner Rig: Sail-force Projection Calculator | FIRGELLI
Explore a schematic schooner sail plan and compare ideal forward force from apparent wind, area and assumed coefficients. Understand why this does not predict boat...
Club Topsail Rig Mechanism Explained: Parts, Diagram, Sail Area Formula and Worked Example
Explore a triangular club topsail above a gaff. Calculate flat cloth area, leech length and separate spar extensions; these dimensions do not establish rig strength...