Patent ID: 11891159
Assignee: JAPAN AGENCY FOR MARINE-EARTH SCIENCE AND TECHNOLOGY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 9:
10. The unmanned watercraft according to claim 9, wherein
in a state where the insulating envelope is accommodated in the recess, a front clearance, a rear clearance, and a connection clearance are provided between the recess and the insulating envelope, the front clearance being provided on a front side of the unmanned watercraft in a sailing direction and having the front opening that communicates with the outside, the rear clearance being provided on a rear side of the unmanned watercraft in the sailing direction and having the rear opening that communicates with the outside, and the connection clearance connecting the front clearance and the rear clearance, and
the water channel is formed from the front opening to the rear opening through the front clearance, the connection clearance, and the rear clearance.