Under and above the Surrey side arch of Kew Railway Bridge. Make sure that you give extra room to the shore when steering in the shallows in these places and look out for headlands, islands and debris out in the river. When going with the stream expect boats to be further out from the bank than normal at these places. The following obstacles in the river are particularly dangerous for scullers and coxless boats. Be aware that mobile obstacles such as anchored barges or boats moored to bridges can occur anywhere at any time.
Memory helps, but it is no substitute for a proper look-out.
Three red discs, red balls or red lights mark a closed arch, usually due to bridge works. A hanging straw bale marks an open arch with reduced head room, not usually a problem to rowers. Coxes are too often chosen for their size and availability rather than their navigational ability or knowledge of the steering rules. Generally the coxes you meet on the river can be taken to know about keeping to the shallows and to have some local knowledge. Few will have read or even know of the existence of the PLA byelaws and the Rules of the Road.