The navigator has three basic tasks: to fix the position of his ship and optimize his course, to avoid other vessels, and finally to carry out the very precise movements necessary to bring his ship to its berth. To meet these tasks he has a number of aids at his disposal. His ship may not carry them all, but it will carry at least some. Three main headings are considered: 1 - Open ocean position fixing; 2 - Landfall fixing and maneuvering aids; 3 - Estuarial and berthing aids. One main topic from each of these categories is discussed, first from the relative merits and economics of the hyperbolic and satellite systems, second from the collision avoidance problem, and third from the wide possibilities of radar beacons. Before dealing with these detailed points the other systems in each category will be very briefly considered. The five important features compared are operational capabillty, accuracy, cost (including maintenance), reliability and ease of maintenance, ease of operation and interpretation. These are roughly in order of importance, but some, for instance cost and reliability, are inter-related.

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  • Corporate Authors:

    Royal Institute of Navigation

    1 Kensington Gore
    London,   England 
  • Authors:
    • Foley, F M
  • Publication Date: 1972-7

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Filing Info

  • Accession Number: 00084650
  • Record Type: Publication
  • Source Agency: Royal Institute of Navigation
  • Files: TRIS
  • Created Date: May 19 1975 12:00AM