Hitoshi Narita

Hitoshi Narita is a Japanese naval architect, researcher, businessman, and an International Fellow of the Royal Academy of Engineering (FREng).

For a time, Narita was one of the Managing Directors of Mitsui Engineering and Shipbuilding Co. in the 1990s. Dr. Narita is currently senior advisor for science and technology at the US Office of Naval Research's International Field Office, Asia. In this position, he coordinates partnerships between Japanese and American science and technology organizations. Dr. Narita played a significant role in steps which led to establishing Japan-US joint participation projects, which meant Japan's National Institute of Advanced Industrial Science and Technology (AIST), 2001. began to partner with the US Naval Research Laboratory.

As a child growing up in Nagoya, Japan, he recalls having been fascinated by large mobile structures—airplanes, ships, trains—anything which was large, mechanical, and moved. He believes that his career interests were sparked by having watched the large cargo ships coming in and out of the ports near his home.

At Mitsui Engineering and Shipbuilding|Mitsui Engineering and Shipbuilding Co., Narita started out in ship design, and went on to work in research and development.

Narita developed the world's first use of the catamaran-like design for large commercial ferries—the "small waterplane area twin hull" or SWATH configuration. The demonstrated stability and seaworthiness of these ferries led to the increased use of a similar vessel design in contexts, including naval ships, oceanographic survey ships, pleasure crafts and sightseeing boats.

Narita lead the team developing the novel Mitsui Integrated Duct Propeller (MIDP), which was designed to increase fuels saving in large ships. The MIDP effectively mitigated the constant erosion caused by cavitation from the ship's propeller on the conventional propeller duct by moving the duct forward and by realigning a non-symmetrical duct adapted to the stern flow. The MIDP increased propeller efficiency and virtually eliminated the shipyard downtime which was formerly necessary for repairing the erosion problems. The substantial fuel savings has been demonstrated in over 200 ships, including all of Exxon's Very Large Crude Carriers. New ships have been incorporated MIDP in their design, and older ships have been retrofitted.

...
Wikipedia