Mitsubishi Heavy Industries Limited

Mitsubishi Shipbuilding Co., Ltd.

Takashi Okafuji

Hiroaki Yokoyama

Kazuhiro Hirota

Masashi Sasaki

Shin Nakayama

Katsuhiko Shoda

Kazuhiro Miura

Michihisa Watanabe

Shunsaku Matsumoto

Masaya Kubota

Ryusuke Takada

Kazumasa Hasegawa

A hydrofoil craft includes a hull including a bottom that spreads from a bow to a stern; and a hydrofoil mechanism provided on the bow side of the hull. The hull further includes an accommodating recess formed therein, and the accommodating recess is recessed toward the stern side between the bow and the bottom to accommodate the hydrofoil mechanism. A retreat surface is formed between the bottom and a recess main surface facing the bow side in the accommodating recess, and the retreat surface extends toward the stern side in a downward direction and is connected to the bottom.

Hydrofoil craft

To provide a non-spherical tank which includes: a circular cylindrical portion; a top portion disposed continuously with an upper side of the circular cylindrical portion; and a bottom portion disposed continuously with a lower side of the circular cylindrical portion, wherein the top portion includes: a spherical shell portion which is formed of a portion of a spherical body having a radius R, and is disposed at an upper end of the top portion; and a toroidal portion which is disposed continuously with the upper side of the circular cylindrical portion and with a lower side of the spherical shell portion respectively, and is formed of a portion of a spherical body having a radius Rsmaller than the radius R, and an expression 1.0&#x3c;R/H&#x3c;1.5 is satisfied. Here, 'R' denotes a radius of the circular cylindrical portion, and 'H' denotes a height of the top portion in a vertical direction.

Non-spherical tank and liquefied gas carrier ship equipped with the non-spherical tanks

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Tokyo, Japan

Takashi Okafuji