Unmanned Aerial Vehicle

An unmanned flying object comprising at least four rotary wings and a controller controlling rotations of the at least four rotary wings, wherein:

• the unmanned flying object comprises an inspection camera which is placed at a position on the vehicle body of the unmanned flying object, the position being between one or more rotary wings from the at least four rotary wings positioned at a traveling direction-side and one or more rotary wings from the at least four rotary wings positioned at a side opposite to the traveling direction-side, where the unmanned flying object flies while the at least four rotary wings are at least partially preventing scattered liquid from reaching a position above the vehicle body when the unmanned flying object is flying above a surface on which a liquid at least partly exists,
• wherein the unmanned flying object further comprises a thrust generation propeller and the unmanned flying object is propelled by rotations of the thrust generation propeller while floating by rotations of the at least four rotary wings.