Mitsubishi Jukogyo Kabushiki Kaisha

Hiroyuki Shimada

Yasuyuki Maehara

Shozo Toyoda

Masanori Shuku

Toshio Hanano

Hirohisa Tomikawa

Naofumi Murao

Toshimasa Okabe

Kazuyoshi Mori

Akira Mizokami

A floating liquid-storage tank has side walls of double-hull construction for storing a liquid lighter in specific gravity than water. The double-hull side walls consist of inner and outer hull sections and have watertight partition plates for dividing the hollows of the side walls into upper and lower ballast tanks. The outer hull sections of the upper ballast tanks are built to be resistant to the external water pressure and those of the lower ballast tanks are non-pressure-resistant. Holes through which the water outside can enter the lower ballast tanks are made in the outer hull sections of the lower ballast tanks. The partition plates are horizontally located at or slightly below the level of the intersection of the liquid-pressure distribution line and the external-water-pressure distribution line in the direction of depth of the storage tank in the full loaded condition. The bottom wall of the storage tank has a bottom ballast tank formed integrally with the lower ballast tanks, and the outer hull section of the bottom wall is built to be non-pressure-resistant.

Floating liquid-storage tank having side walls of double-hull

A marine oil storage installation includes at least one floating type oil storage tank having a double bottom and double walls and is provided with shore connection means. Protector means composed of at least one line of floating members surrounds each oil storage tank for protecting each oil storage tank from damage as the result of waves and contacting moving objects and for preventing oil from flowing out. Mooring means for drawing each oil storage tank and, loading arm means carried on the mooring means adapted for connection and disconnection with the shore connection means on each tank are also provided. A shore based facility is installed on the shore or on an artificial land and communicates with the loading arm means, and a platform is installed in the sea for moorage of tankers and is provided with means communicating with the shore based facility for feeding oil between the tankers and the shore based facility.

Marine oil storage installation

Growing community of inventors

Nagasaki, Japan

Hiroyuki Shimada