Various weather downtime graphs Pie charts showing monthly weather downtime by task; downtime is generally higher in winter months
David Lambkin ABPmer
Drill rig towage

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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Weather downtime calculator updates

As our calculator has increasingly become the go-to tool for weather downtime calculations, we have adapted it to suit the differing needs of the offshore wind, subsea cable and oil & gas sectors.


Those who are regular users of our weather downtime express service will know that we have recently upgraded the calculator to take account of different industry needs.  Here we outline a summary of the changes and the reasoning behind them.

ABPmer has been providing metocean information to the offshore sector for nearly a decade. In recent times this has included weather downtime statistics to inform operational planning, tender pricing and programme management.

Our weather downtime calculator was originally an in-house tool but in 2015 we launched the express service that provided offshore contractors with direct access to the tool and our global hindcast database. This has dramatically sped up downtime calculations, now taking less than 10 minutes, therefore speeding up decision making.

As the calculator has increasingly become the go to tool for weather downtime calculations, we have adapted it to suit the differing needs of the offshore wind, subsea cable and oil & gas sectors. Specifically we

  • allowed for specifying tasks that are ‘interruptible’ during the working schedule
  • provided additional information about partial completion of the whole operation, including Gantt charts showing the progress of the operations including weather downtime per task
  • enabled the use of externally supplied data to be used in the tool for calculations (although our in-house SEASTATES dataset remains available for use as a default)
  • have added more detail to the specification of input parameters, i.e. more detail about the wind speed or wave period

To learn more about calculating weather downtime, download our White Paper, 'Accounting for Weather in Marine Operations'


To arrange a free trial of our weather downtime calculator, visit our SEASTATES microsite or call +44 (0)238 0711 879.