Unmanned aerial vehicle for observing ship waterline

The utility model provides an unmanned aerial vehicle for observing a ship waterline. The unmanned aerial vehicle comprises a vehicle body, a rotor wing module, a floating module, a camera shooting module, a wireless transmission module, a navigation module and a main control module. The rotor wing module is arranged on the periphery above the vehicle body and used for enabling the unmanned aerialvehicle to move in the air and on the water surface. The floating module is arranged below the vehicle body and used for enabling the unmanned aerial vehicle to float on the water surface; the cameramodule is arranged in the middle above the machine body and used for collecting a ship water gauge scale image; the navigation module is arranged in the vehicle body and is used for positioning the unmanned aerial vehicle; the main control module is used for receiving a control instruction of ground equipment through the wireless transmission module, controlling the rotor wing module and the camera shooting module to work