We’ve booked the lock into the Thames for 1130, to catch the last couple of hours of the tide, which will sweep us up the river. (The boat goes so slowly that it would hardly move if it tried to fight the tide). Three other Black Prince boats head for the lock, with a shared professional pilot, but one turns back because of engine trouble. We head out into the Thames, giving our plan to Thames VTS (traffic control) on VHF channel 14, and head for Tower Bridge.
We intend to go through the centre span but as we approach a white light starts flashing which is the signal that a large craft needs it, so we divert to the right hand span as a small coaster looms behind us.
We pass the Tower and all the other sights of central London’s riverside, while concentrating hard on the currents which swirl round every obstruction and moored craft, at the same time reading the bridge by bridge pilotage guide – sadly no longer in print.
The bridges became easier as the traffic eased and the number of darting river buses fell – their stops alternate sides of the river. The first complication was Battersea Railway Bridge, where we had to call Bridge Control for permission to pass because of the extensive work being done on the bridge.
We wound our way up the narrow river, crowded with moored barges, to the Gauging Lock at Brentford, where we went through into the canal basin and moored for the night. Susannah brought Tom and Ella-Rose to see the boat.