HMS Falcon was a river gunboat of the Royal Navy built by Yarrow Shipbuilders in 1931 for the Yangtze Patrol.

For air defense, the gunboat is armed with ten machine guns that could also be used against surface targets.

In March 1941, the gunboat was paid off and her crew travelled overland to Yangon via the Burma Road and her guns were sent by elephants.

[4] The gunboat served with ROCN until 30 November 1949, when the ROCN Riverine Flotilla commander defected to advancing communist force that blocked the Yangtze River, taking seven boats to the communist side, including Yīng dé.

[4] After joining the People's Liberation Army Navy (PLAN), the gunboat was once again renamed, this time changed to Nan Chiang, and served until 1974 to its final retirement.