http://hdl.handle.net/20.500.12067/1091 Mon, 20 Apr 2026 16:35:40 GMT 2026-04-20T16:35:40Z http://hdl.handle.net/20.500.12067/534 Coastal Navigation Sitothai, Vichitra; Oishi, Masato To carry out any activities at sea one needs to know how to fix positions, set a course and measure the distance. In the area of fisheries navigation knowledge is obviously essential. For instance, when a fishing boat is preparing to leave a port for a fishing ground, the planned sea route (course) must be drawn on the charts, and the course in degrees and arrival time at the fishing ground must be decided. Tue, 01 Apr 1986 00:00:00 GMT http://hdl.handle.net/20.500.12067/534 1986-04-01T00:00:00Z http://hdl.handle.net/20.500.12067/532 Celestial Navigation Oishi, Masato To carry out any activities at sea one needs to know how to fix positions, set a course and measure the distance. In the area of fisheries, navigational knowledge is obviously essential. For instance, when a fishing boat is preparing to leave a port for a fishing ground, the planned sea route (course) must be drawn on the charts, and the course in degrees and distance in nautical miles calculated. The departure and arrival time at the fishing ground must be decided. Mon, 01 May 1989 00:00:00 GMT http://hdl.handle.net/20.500.12067/532 1989-05-01T00:00:00Z