However, 4 rivers in the core exploration area were polluted to varying degrees which would post threats to personnel safety if to detect the underwater outlets with the traditional manual method. Higher working efficiency and accuracy are required in the emergency operation, with which the traditional surveying method is insufficient to satisfy.

 Invited by the Ministry of Ecology and Environment, OceanAlpha dispatched the TC40 unmanned surface vessel to survey the 4 polluted rivers and successfully check and clean the potential risk of all the hidden pipes and underwater sewage outlets.