Chinese School, circa 1810

Bocca Tigris ('the Tiger's Mouth' and also known as 'the Bogue'), a narrows on the Pearl River 30 miles south of Whampoa, was a fortified Customs point through which all Western shipping had to pass. Here a Danish East Indiaman is shown passing between Wantong and Anunghoi Forts, with two Customs vessels in the foreground.