Rowing in fog is like rowing through space. The horizon disappears, replaced with a gradation of greys from the dark of the water to the light of the sun trying to break through.
The downside is it is completely disorientating, with no indication of direction apart from the sun. Even up and down is a bit vague. I steered by mobile phone.
First, I fired up Google Earth and checked our position. Google Earth is the best because it shows all the mudbanks. The picture clearly shows a rough heading. Next, bring up the phone's compass and off we go.
Surprising how quickly the heading changes - I needed to consult the compass all the time even looking at the sun. Surprising also how often one needs to look back at Google Earth to check the position.
Cue for old Goon Show exchange:
Captain Ned Seagoon: "What's our position?"
Major Dennis Bloodknock: "Desperate!"
So it was a great relief to see the Ferryboat Inn looming out of the mist. We had arrived!