rescuer / drone

In the passenger shipwreck accident,some places in the ship would have remain some air in it which some survivors in there can survivor in a short time.The rescue efficiency is not high due to underwater visibility is limited and the physical strength of diver is limited,which might cause the survivors died.Rescuer is an underwater rescue drone.It could find the survivors by the life sensor.When it found the survivors,it would feedback the position to the ground.Rescuer have simple diving device in the diving equipment box and the handle in twoside that survivors can grap which can help the survivors escape.