HMS Gannet was a river gunboat of the Royal Navy built by Yarrow Shipbuilders in 1927 for Yangtze Patrol.

[2] Originally functioning in the area of Hong Kong, Gannet was damaged by Japanese aircraft and went to the Chinese wartime capital Chongqing for repair.

The gunboat and its sister ship Peterel were chosen by the British to be presents for China, and the transfers were made in February 1942.

[1] The following month, both gunboats officially joined the Republic of China Navy (ROCN) and Gannet was renamed as Ying Shan (英山, literal translation = British Mountain).

[2] After joining the People's Liberation Army Navy (PLAN), the gunboat was once again renamed Nu River.