The colour of water in Queen's Dock is bright orange from the suspended ferric oxide coming in via Corkickle Tunnel and Bransty Beck.
The rust [ferric oxide] is now staining the walls and hulls in this dock.
No wonder that there are many empty berths here.
Truly "OrangeHaven" ...
Potentially, work to relay the track & replace the ballast in Corkickle Tunnel should alleviate the incoming "iron ochre" - this is due to happen in August / September 2025.