The vessel was designed 
to detect and clear detect and remove  (detect and remove) mines for the rest of the fleet. 
The four vessels was then enforced by two Type 037 (Hainan class) antisubmarine patrol crafts
. (
extra period) (hull 281 and 282). The battle 
has resulted  (resulted) in one South Vietnamese corvette being sunk, and another heavily damaged.
After the battle, the PRC regained 
the control (control) over the Paracel Islands.