'golden sand') is a medium size air-cushioned landing craft (hovercraft) operated by the People's Liberation Army Navy of China.
In the late 1960s, People's Liberation Army General Logistics Department asked 708th Research Institute to design a prototype LCAC for logistic needs to supply coastal islands, but due to political turmoil in China, namely, Cultural Revolution, construction took three years after the design was approved, and it was not until 1978 when the boat was finally completed by Hudong Shipbuilding (沪东造船厂) in Shanghai and entered service in the same year.
NATO reporting name Dagu A class was given to Type 716 LCAC, which achieved speed over 100 km/h during trials in Dianshan Lake, before being sent to South China Sea for further evaluation.
Type 716 LCAC did not enter mass production after the prototype was built due to its fatal design flaw: the propulsion system was an aeroengine driven by gasoline, which is prone to fire.
Just as in the case of Type 716, Tye 722 LCAC suffered delay in construction after design was approved due to the same political turmoil in China, and it was not in 1979 when the first unit entered the service.
The sole prototype (452) lacked a bow door for disembarkation, and this feature may have been added to an improved version before entering production.
The primary design flaw was the same one shared by its direct predecessor, Type 716 LCAC, in that the four engines are gasoline drive, prone to fire.
Designed by Aviation Industry Corporation of China and constructed by Jiangnan Shipyard, the first unit was launched in December, 2009 and entered Chinese service soon after.