Well yes Crab. You have a point. One that fits with my scenario of the SK flying through the glens. And where we may be at present is "We have a S-92, we can fly anywhere. Oops, no we can't."
It looks to me like we need more science done. (Not going to hold my breath.)
In relation to the recent Kintail Ex, like all NW teams we are often using an aircraft that flies 20 minutes over the Minch to get here so over water flight is part of the overall scenario.