The great circle is the shortest distance between two ports, but the sea does not reward distance alone. Currents, wind and waves can make a slightly longer weather-optimized route faster, cheaper and safer.
The trade-off
- Great circle: minimum distance, but ignores metocean conditions.
- Weather routing: balances distance against currents, seas and safety.
- The right choice depends on season, route and the value of ETA certainty.
NAVGreen generates a global route in milliseconds, balancing ETA, fuel and safety against forecast conditions — so the plan reflects the ocean you will actually sail, not an idealized straight line.