16-day Brazil-to-US-Gulf transit on a tanker, October–November 2018. Benign-weather voyage staying entirely within Sea State 3–4 (mean 1.40 m). Optimised track was 46 nm shorter, 3 hours faster, and burned 1.67% less fuel.
How the voyage performed across wave height and Douglas Sea State exposure — recorded waypoint-by-waypoint.
The historical AIS track was pulled from public records and matched against the master’s own reports. The VF Engine then re-routed the same vessel under the weather as it actually occurred — not a forecast. Both tracks were scored by the same FOC prediction model and compared waypoint by waypoint. The 1.67% reduction is the delta sailed at the same speed band, under the same wind and wave conditions.
Read the full validation methodologyClosed beta admits operators on a rolling basis. The trial voyage is free.