Mr. Stewart Stevenson:

I will explain what we are essentially counting at the moment. This is the only sensible way it can be done. We measure bunkering. In other words, the fuel that we supply goes on our account. That is what it boils down to. I should mention while we are talking about shipping that the Scottish Government has had designed and built two hybrid ferries that run on electric power when they are leaving and arriving at port, but use diesel in the intermediate stages of their journeys. Incidentally, the secondary benefits of not running engines in harbours are that the local area is not polluted and that there is a reduction in noise levels for local communities, particularly overnight.