Recent Blogs
Leg-of-mutton Sail Mechanism Explained: How It Works, Parts, Uses, and Aerodynamic Force Diagram
How a leg-of-mutton sail works — geometry, driving force, rigging tradeoffs, and a worked example for sizing a small-craft mainsail by wind speed.
Topsail Schooner Mechanism Explained: Sail Plan, Rigging Parts, and SA/D Calculation
How a Topsail Schooner works — fore-and-aft rig with square topsails on the foremast, sail plan math, real vessels like the Pride of Baltimore II,...
Newport Cat-boat Mechanism Explained: Hull, Sail Balance, Centreboard, and CE/CLR Diagram
Build or restore a Newport Cat-boat with confidence — sail plan, hull form, centreboard geometry, and worked rigging numbers for shallow-draft coastal sailing.
Club Topsail Rig Mechanism Explained: Parts, Diagram, Sail Area Formula and Worked Example
Club topsail rig explained — how the spar, sheet and halyard work above the gaff, why traditional yachts use it, and how to size sail...