 The first , an armed tug, was on Asiatic Station into 1891, cruising the Chinese and Japanese coasts, visiting the open treaty ports and making occasional voyages up the Yangtze River.From June to September 1891, anti-foreign riots up the Yangtze forced the warship to make an extended voyage as far as Hankou, 600 miles upriver.Stopping at each open treaty port, the gunboat cooperated with naval vessels of other nations and repairing damage.