X Lighter 'Black Beetles'

[RobL]

It appears at least three of the X Lighter armoured landing craft are still in the UK, is anyone aware of anymore?

http://www.nationalhistoricships.org.uk/register/2500/brandram

http://www.nationalhistoricships.org.uk/register/2294/spithead

http://www.nationalhistoricships.org.uk/register/652/peter-p

I'd certainly hope that at least one is eventually preserved, given how remarkable it is that three survive almost 100 years on. Are there any elsewhere? (Apart from the several wrecks that can still be seen at Gallipoli)