Wouldnt the military like to use these? Seems like they would make great landing craft. A lick of cam paint and some guns and armour and bingo. Yes did go in them a few times when a kid and great experience.

Only if they intend to invade Holland......

Urgent-Government Dept all set to scrap last two Giant SRN4's
 

As far as I remember some of the Rolls Royce Proteus were taken from the SRN4 in order to be used as power plants for someone's power boat. So probably it would be impractical to try and move these craft to another location anyway even if they could be made seaworthy again. Considering that the Hovercraft Museum has the World's best collection of hovercraft of all types anyway, if there was no SRN4, the largest type built by BHC at Cowes, the Museum would be incomplete without at least one of these craft anyway. Please add your name to the petition to save one.
Petition can be found under the website for the Hovercraft Museum.

3 Wheels The technical aspects of Hovercraft were regulated by the CAA.

HOVERCRAFT (APPLICATION OF ENACTMENTS) ORDER 1972 (Hansard, 15 May 1972)

That regulation was very much what lead to the situation where these machines were too expensive to operate.

As anyone with experience of floatplanes or amphibians can attest aeronautical practices in a maritime environment is the kiss of death. A great shame as composite hovercraft such as the HM were also 'caught'.

Please google USMC hovercraft. A few of you will learn something

and to add to that try "AIST Hovercraft" to see what the other side came up with.........