Nautical Chart Muroran Kō, 1972

Nautical chart of Muroran Kō, located on the southern coast of Hokkaidō, Japan, dated 1972. Includes updates and corrections until 1974. Provides information on tide heights and soundings in fathoms. The chart is printed on paper and shows geographical and navigational details. Uses gnomonic projection for cartographic representation. Preserves all original marks and annotations from the period. From Japanese government charts to 1972. With additions and corrections to 1974. London published at the Admiralty 23rd February 1962, under the superintendence of Rear-Admiral E.G. Irving, O.B.E., Hydrographer. Small corrections 1975-76. This piece is an official nautical chart of the British Admiralty representing the port of Muroran, located on the island of Hokkaido, Japan. Admiralty charts are globally recognized for their technical accuracy and are highly sought after by both navigators and maritime-themed collectors. Physical Description and Measurements: Editor: Published by the Hydrographic Office of the Royal Navy. Scale: Generally, these port charts (like that of Muroran Ko) are published at a large scale to facilitate docking maneuvers, often 1:12,500 or 1:15,000. Dimensions: The standard 'Full Size' format of the Admiralty is approximately 104 x 71 cm (41 x 28 inches). Material: High-density, heavy-weight paper designed to withstand rough use and moisture on the bridge. Details of the 1972 Edition: Content: The chart shows in meticulous detail the depths (soundings), navigational aids (lighthouses, buoys), underwater hazards, and the infrastructures of the port of Muroran, a key industrial center for steel in Japan. Corrections: Being from 1972, it includes all 'Notices to Mariners' up to its printing date. It usually carries a small stamp in the lower left corner indicating the last official revision. Regional Interest: By representing an important Japanese port, it has a specific market in Asia-Pacific cartography collections.