 The new design incorporated a low superstructure fore and aft, providing additional accommodations for police or troops.A lightly armed version with 25 mm main guns received NATO reporting name Beihai class.This advantage combined with their later completion time in comparison to Shantou, Beihai and Yulin classes have made this class more active in the reserve than the others in the naval militia, However, like the Shantou, Beihai and Yulin classes, as the new class of port security patrol boats entering service, the Huangpu class is increasingly being converted, mothballed and eventually scrapped.