Re: a navalised Typhoon
' not really much need for extra fuel'
You always need extra fuel!
I'm also not totally convinced by simulations from the people trying to sell you the aircraft, especially when BAe Systems are involved. I'm also not convinced by the argument that it would mostly be on fleet defence, if we'd had them for the last decade they would have been doing what the USN has been and launching with a full air to ground load, crossing over Pakistan and supporting ground forces in Afghanistan.
The recovery options for Typhoon aren't great either, all the simulations I've read about pointed out that to get down to landing speed the nose would be so high the pilot wouldn't be able to see the ship. And it's not a small ship.