The result of the author's five-year effort to find a rational scheme using radar to maneuver out of danger from another radar-using ship without exchanging intentions or looming into view too close for escape. It is equally useful in case of radar versus no-radar. Two ways were found to guarantee safe clearance. The first employs rule-of-thumb preparation of the radarscope before sailing. Thereafter dead reckoning eliminates vector plotting. It also makes available a continuously predicted indication of safe maneuvering limits in crowded waters. This improvement over trial-and-error is adaptable to automatic display to relieve scope saturation effects. The second method likewise dispenses with vector plotting and related calculations. It is a refinement of the tables that were generated to investigate close quarters geometry as aforementioned, and optimize steering conventions. The unique feature of these machine solutions is that they preclude decision conflicts between ships using the same tables, but do not violate the present Rules of the Road should visibility at effective radar ranges make the Rules applicable. The Radar Anti-Collision Tables provide a three-number method for a Watch Officer to give the skipper a complete description of any confrontation and presolved evasive action: by page, line number, and range. Built-in versatility constitutes a check on manual solutions plus backup against malfunction or failure of automated solutions.

  • Corporate Authors:

    Cornell Maritime Press, Incorporated

    101 Water Way, P.O. Box 21617
    Centreville, MD  United States  21617
  • Authors:
    • Quilter, E S
  • Publication Date: 1976-7

Media Info

  • Pagination: 170 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00139547
  • Record Type: Publication
  • Source Agency: Cornell Maritime Press, Incorporated
  • Files: TRIS
  • Created Date: Sep 16 1976 12:00AM