Metocean data for long vessel transits

Using SEASTATES to plan for a new long transit route for large vessels from Denmark to Taiwan

To support the transit planning of large vessels on long ocean passages, FOWIC required robust metocean data. FOWIC already benefited from a subscription to the ABPmer Weather Downtime Express (WDTX) service for its regular routes. The service provides data to account for potential delays caused by wind speed and wave height in excess of the working limits and estimates provided for weather downtime.

For a new long transit route from Denmark to Taiwan, FOWIC required additional information about the nature of currents (speed, direction and variability) on different parts of the global route. These data were used to understand if currents are likely to significantly affect the speed of the vessel over the ground, and, subsequently, the passage time, both overall, and in certain sections (with implications for bunkerage planning, WDT analysis, etc).

Using timeseries from our own global SEASTATES tide, surge and wave models and other global metocean model datasets, we provided detailed information on local metocean conditions and climate for over 30 locations around the world. The locations were chosen manually on the basis of mapped exceedance statistics for wind speed and wave height, with the aim of characterising larger areas of similar wind and wave climate, and to provide regular information throughout the length of the route.

Such global datasets do not, however, provide the most accurate representation of hurricanes and typhoons. The data used to inform this study, and the derivative metocean statistics, were thus supported by historic information on tropical storms from IBTrACS (International Best Track Archive for Climate Stewardship) data base.

The output of the study was regional climatological summary information for five distinct climatic regions along the route along with range of more quantitative wind, wave and current statistics for specific locations along the routes.

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SEASTATES metocean information

Our dedicated metocean website provides access to free global metocean statistics and a free trial of our weather downtime calculator.

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