Manchuria - Manshu

Japanese: 満洲 - まんしゅう

A survey ship of the Imperial Japanese Navy (displacement 3,510 tons). It was originally a Russian warship built at a shipyard in Genoa, Italy. It was used for oceanographic observations and hydrographic surveys from 1924. Captain Shigematsu Ryoichi, who served as the ship's captain from 1925 to 1926, was a pioneer in oceanographic observations at the Navy Hydrographic Department. It was a pioneer in wide-area observations of the Western Pacific Ocean up to the equator. The Manchuria, at 11°13′N, 142°09.5′E, southwest of Guam, gave a depth of 9,818m, which it named the Manchuria Deep. The ship was also one of the first to adopt acoustic soundings, and established an observation method in which soundings were the main part of oceanographic surveys along with water temperature sampling and bottom sediment surveys, laying the foundation for systematic observations by survey ships and survey vessels.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

日本海軍の測量艦(排水量3510トン)。もとはイタリア，ジェノバの造船所で建造されたロシア軍艦。1924年より海洋観測，水路測量に用いられた。25‐26年に同艦艦長を務めた重松良一大佐は，海軍水路部での海洋観測を育てた人。赤道域にまで至る西太平洋の広域の観測に先鞭をつけた。グアム島南西の北緯11゜13′，東経142゜09.5′での〈満洲〉による重錘測深の結果，9818mを得，満洲海淵と命名。本艦では，音響測深をもいち早く取り入れ，測深を採水測温，底質調査とともに海洋調査の主体とする観測方法を確立し，測量艦，測量船による系統的な観測の基をつくった。

出典　株式会社平凡社世界大百科事典第２版について　情報

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