also be advised here was one response to that post...

Graham Stuart Watt writes..... "Same thing for Green Mooring Marker steaming into Bitter end, passing Necker. There should be two Reds and Two Greens. Opposite where the 2 reds are visible One Green is clearly marked On Green Marker Bouy IS DIRECTLY BENEATH THE WATER LINE. Its all fine as long as no one runs into the damn thing. Anyways happy sailing All, Have a great day."