Operating method of multiple underwater vehicles and operating system of multiple underwater vehicles

1. An operating method of a multiple underwater vehicles, wherein in order to explore a water bottom, exploration missions and exploration depths of the multiple underwater vehicles which cruise at an exploration depth close to a water bottom are previously differently set in the underwater vehicles, the multiple underwater vehicles are submerged to the respective set exploration depths, the multiple underwater vehicles are made to cruise at the respective set exploration depths to execute the exploration missions under control of a on-water control means placed near a water surface, and execution results of the exploration missions are recorded and/or transmitted,

wherein the exploration depths which are differently set in the underwater vehicles include a deep exploration depth which is close to the water bottom and a shallow exploration depth which is far from the water bottom,

wherein a height from the water bottom on which the underwater vehicle at the deep exploration depth can cruise is 1 m or more and less than 50 m, and a height from the water bottom on which the underwater vehicle at the shallow exploration depth can cruise is 10 m or more and less than 200 m, and

wherein cruising speed of the underwater vehicle having the deep exploration depth is slower than cruising speed of the underwater vehicle having the shallow exploration depth.

2. The operating method of the multiple underwater vehicles according to claim 1 , wherein the multiple underwater vehicles include exploration regions at the respective set exploration depths.

3. The operating method of the multiple underwater vehicles according to claim 2 , wherein cruising paths of the underwater vehicles are set such that cruising local of the underwater vehicles which cruise in the respective exploration regions are not vertically superposed on each other simultaneously.

4. The operating method of the multiple underwater vehicles according to claim 1 , wherein an image taking operation of the water bottom is included in the exploration mission of the underwater vehicle having the deep exploration depth.

5. The operating method of the multiple underwater vehicles according to claim 1 , wherein research of a land form of the water bottom and/or research of a geological layer underwater is included in the exploration mission of the underwater vehicle having the shallow exploration depth.

6. The operating method of the multiple underwater vehicles according to claim 1 , wherein positions of the multiple underwater vehicles are measured by acoustic positioning means provided in the on-water control means having moving means and capable of cruising near a water surface and/or communication is performed utilizing communication means which are respectively provided in the underwater vehicles and the on-water control means, and the exploration mission is executed.

7. An operating system of a multiple underwater vehicles comprising the multiple underwater vehicles which cruise at an exploration depth close to a water bottom, exploration condition setting means which previously differently sets exploration missions and exploration depths provided in the multiple underwater vehicles, submerging means for submerging the multiple underwater vehicles to the respective set exploration depths, on-water control means placed near a water surface, exploration mission executing means for cruising the multiple underwater vehicles at the respective set exploration depths to execute the exploration missions under control of the on-water control means, and recording means and/or transmission means for recording and/or transmitting an execution result of the exploration mission,

wherein the exploration depths which are differently set by the exploration condition setting means include a deep exploration depth which is close to the water bottom and a shallow exploration depth which is far from the water bottom,

wherein a height from the water bottom on which the underwater vehicle at the deep exploration depth can cruise is 1 m or more and less than 50 m, and a height from the water bottom on which the underwater vehicle at the shallow exploration depth can cruise is 10 m or more and less than 200 m, and

wherein cruising speed of the underwater vehicle having the deep exploration depth is set slower than cruising speed of the underwater vehicle having the shallow exploration depth.

8. The operating system of the multiple underwater vehicles according to claim 7 , wherein the exploration condition setting means sets exploration regions of the multiple underwater vehicles at the respective set exploration depths.

9. The operating system of the multiple underwater vehicles according to claim 8 , wherein the exploration regions are set such that cruising paths of the cruising underwater vehicles are not vertically superposed on each other simultaneously.

10. The operating system of the multiple underwater vehicles according to claim 7 , wherein the underwater vehicle which explores the deep exploration depth includes imaging means for taking an image of the water bottom.

11. The operating system of the multiple underwater vehicles according to claim 7 , wherein the underwater vehicle which explores the shallow exploration depth includes land form researching means which researches a land form of the water bottom and/or a geological layer researching means which researches a geological layer under the water bottom.

12. The operating system of the multiple underwater vehicles according to claim 7 , further comprising the on-water control means having acoustic positioning means and/or communication means and capable of cruising near a water surface, wherein the on-water control means measures positions of the multiple underwater vehicles by the acoustic positioning means and/or the on-water control means performs communication with the communication means possessed by the multiple underwater vehicles, and the operating system executes the exploration mission.