Understanding Ship Stability
The geometry that keeps a ship upright: the four points K, B, G, and M, the righting lever and GZ curve, stiff versus tender, and the faults that capsize ships.
A ship stays upright because of numbers, and capsizes when those numbers are ignored. This is how vessels are built, loaded, and kept stable: stability and the metacentric height, hydrostatics, draft and trim, cargo and ballast, and the construction and ship types behind it all.
The geometry that keeps a ship upright: the four points K, B, G, and M, the righting lever and GZ curve, stiff versus tender, and the faults that capsize ships.
Heading and speed are the only two levers you have in a storm. Used well, they keep your ship clear of the resonance and broaching that capsize vessels and part lashings.
Every part of a ship has a name that works on any vessel afloat. A plain-language tour from bow to stern, with diagrams, so you can find your way around with confidence.