Title:
UNDERWATER CRAFT
Document Type and Number:
Japanese Patent JPS63279997
Kind Code:
A
Abstract:
PURPOSE:To obtain a highly safe underwater craft by providing such buoyancy that the upper hatch section floats over the surface of the sea even under maximum ballast, and making ON/OFF control of a propulsion unit based on a signal fed from a depth sensor. CONSTITUTION:An underwater craft is constructed such that a hatch 6 formed at the upper section of a hull 1 floats over the surface of the sea, and a propulsion unit 9 operatable from the inside of cockpit 3 is ON/OFf controlled based on a signal fed from a depth sensor 12 fixed to the hull 1. Consequently, even if the craft encounters an obstacle under the water, it can float over the surface of the sea through buoyancy of the hull 1 with high safety. Since the hatch 6 floats over the surface of the sea at all times when the craft is not diving, crews can ride on/off freely. Furthermore, since a depth sensor 12 is provided to the propulsion unit 9, the craft can not dive deeper than a predetermined level thus further improving the safety.
Inventors:
FUJIMURA TADAMASA
Application Number:
JP11405987A
Publication Date:
November 17, 1988
Filing Date:
May 11, 1987
Export Citation:
Assignee:
TECHNO JAPAN KK
International Classes:
B63C11/49; B63G8/00; B63G8/22; (IPC1-7): B63B35/86; B63G8/00; B63G8/22