Greenwich from Blackwall Reach, River Thames, London. The photographer is looking south-south-west from on board an excursion vessel that is heading downstream in Blackwall Reach. A loaded spritsail barge owned by the Associated Portland Cement Manufacturers is under sail passing the barge roads at Saunders Ness on the right. The High Bridge Power Station in Greenwich is on the left and the Royal Naval College is in the centre background.