However the ownership of the Crown is subject to the general public right of access for navigation and fishing. By analogy with the right of navigation it would be permissible to land on a beach in an emergency and to remain there for a reasonable time. It could also be argued that it would be reasonable to land when not in an emergency, but that is less likely to be recognised by the courts as a reasonable incident of the public right.
Sorry, I'm not trying to be difficult here. What is the 'right of navigation'? Why is landing an aircraft
not in an emergency different to walking on a beach
not in an emergency? Why does 'navigation' apply to being on foot for a gentle afternoon stroll to take the airs, but in an aircraft only in an emergency?
I ask merely for information.