There were unusual and probably unrelated things going on around North Greenwich today. The Royal Navy sent a helicopter to make several passes over the river around the peninsula, at one point hovering at rooftop level over the centre of the river for five minutes, approximately where the future cable car will cross the water.>/p>
Later while walking round the dome I saw one of the Thames Clippers, probably Hurricane Clipper beached on the river bank.
I think the vessel was deliberately beached because if you look closely you can see a man in wellies who appears to be inspecting the sterngear, and this is the nearest handy tidal mudflat to their base.
In the second picture you can just about see how narrow the hulls of these boats are.