Photo wanted - old dredger, Garton Docks

[daggers]

For many years until the 1960s a bucket dredger lay just outside the docks entrance at Garston, groaning away at all hours. I believe it was railway-owned and may have been called 'Garstonia'.
If anyone can point me in the direction of a photograph I should be grateful.
Daggers

[MaryA]

Will post on a Facebook group or two, there are people with old pictures around