Ship route forecast

Six variables of weather forecast, 2t, 10u, 10v, swh, mwd and pp1d (2m surface temperature, 10m surface zonal wind, 10m surface meridional wind, significant wave height, mean wave direction and peak wave period) are used in routing. Our model optimises using fuel consumption models from ITTC (International Towing Tank Conference), transforming these variables into fuel efficient paths for ship operators.

Medium range weather forecast are known to underestimate abnormal conditions like typhoon, so user should check the result against other sources. As the weather forecast does not originate from us, we make no warranty as to the accuracy and we do not accept any liability whatsoever for any error. It is provided on an "as is" basis. Note that weather forecast degrades with time, so runs closer to forecast date (earlier departure of the 2 dates) will be more accurate. We acknowledge European Centre for Medium-Range Weather Forecasts for their open access data.

The plots below show wind and wave which the ship encounters at time of waypoint. When ship speed changes, a specific latitude-longitude is reached at a different time which means that the corresponding arrows will be from a different time step. The ship is a Handymax bulker and the runs are updated every 2 weekly from Nov 2025 onwards. (Currently it is a preview version).

Owing to ship characteristics and the presence of land as shields from wind/wave, some routes may not vary much. The effects of weather should not be overlooked - even when the optimised routes are similar, waypoints of large wind/wave has high variation. Routing can be refined with forbidden zones, safety limits on wind/wave and varying ship speed.