Voyage Summary

16-day Brazil-to-US-Gulf transit on a tanker, October–November 2018. A benign-weather voyage: both the optimized track and the historical replay stayed entirely within Sea State 3–4 (peak significant wave height 2.21 m optimized, 2.16 m historical, mean 1.40 m). With no weather window to route around, the gains compress – the optimized track was 46 nm shorter, 3 hours faster, and burned 1.67% less fuel (350.48 vs 356.44 MT). A reference case for what routing optimization delivers on a calm-conditions voyage.