Originally Posted by
HeliComparator
Yes there is a big difference between planning to shutdown - ie departing base to visit a rig to shut down for hours, versus having to shut down on the spur of the moment due to a problem and then restarting. The former has to have a big buffer as funnily enough, the offshore weather forecast is not always totally accurate! The latter can be based on the actual conditions of the moment and RFM limits.