satsuma
The fuel tank certainly takes up the space where a few seats will be, perhaps explaining the carrying capacity of just nine. However, I don't believe the stretcher can be stowed on top of the ferry tank - there's supposed to be some sort of strange contraption where you stow the stretcher but it's in a location that makes working around it challenging to say the least. Still, I'm sure they'll have sorted it by the end of this month.
it is a tad disingenuous to keep bleating on about "no less a service" when it suits and then try to suggest that even the "strange contraption" proposed will somehow be worse than the current arrangement in the back of a sea king. My little orange friend, if they did absolutely nothing (ok a wet fit floor) to the cab pics above it would still be an improvement simply due to crash worthy seating and more space, though it has been a few years since I last saw the back of a HAR3 so I would be delighted for the SAR crews to be proved wrong ;-)