Japan Agency for Marine-earth Science and Technology

Kyocera Corporation

Tadahiro Hyakudome

Yasuhiro Ueda

Kenichi Asakawa

Yuichiro Dake

Tomoya Fukukawa

Masao Yoshida

Hiroshi Yoshida

Hideki Endou

Takashi Yoshioka

Hisashi Sugiura

Ryuji Nakazono

Ryotaro Suga

The present invention provides an unmanned watercraft capable of sufficiently cooling equipment that generates a large amount of heat, capable of cooling such equipment without using energy in the watercraft, and capable of improving mean time between failures (MTBF) of a cooling device. An unmanned watercrafthas a cooling structure CS for cooling a central processing unit CPUfor image recognition and a central processing unit CPUfor control that constitute a central processing unit CPU as a heat-generating body. The cooling structure CS includes a waterproof containerthat accommodates the heat-generating body (an insulating envelope that surrounds the heat-generating body in an electrically insulated state). The waterproof containeris arranged outside a submerged partof the unmanned watercraftso as to be in contact with water present outside the unmanned watercraft, the submerged partbeing submerged in water.

Unmanned watercraft

There are provided a shell of a pressure-resistant container that is made of ceramics, is used for a pressure-resistant container formed with a through hole, and can be made higher in strength and lighter in weight, as well as to provide a pressure-resistant container and an exploratory apparatus. A shell of a pressure-resistant container includes a shell portion and a thick-walled portion. The shell portion is made of ceramics and has a convexly-curved surface. The thick-walled portion is made of ceramics, continues into the shell portion, is larger in thickness than the shell portion, and has a through hole penetrating through the thick-walled portion in a thickness direction thereof.

Shell of pressure-resistant container, pressure-resistant container, and exploratory apparatus

Growing community of inventors

Yokosuka, Japan

Tadahiro Hyakudome