Hull Slime & Propeller Barnacle Roughness Fuel-Penalty Auditor via NMEA Telemetry Drift

Deterministic ITTC-1978 Townsin hull roughness Cf increment vs propeller blade k_s drag-to-lift degradation torque-overload separation engine (.csv, .nmea, .gpx, .json) built for Propspeed, Pettit Trinidad, Hempel Silic One, Garmin Marine — zero-upload ephemeral Wasm RAM execution.

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