Sailboat Sheet-Winch Power Ratio, Genoa Clew Load & Capstan Drum-Wrap Sizer

Deterministic Aerodynamic sail clew tension F = 0.021 * A_sail * V_aws^2 + winch handle mechanical advantage + Euler-Eytelwein capstan friction T_hold = T_load * exp(-mu*theta) engine (.json, .pdf, .csv) built for Harken, Lewmar, Andersen Winches, Antal — zero-upload ephemeral Wasm RAM execution.

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