Automatic radar plotting aids (ARPAs) have been in use for some time. Although training courses are mandatory for those countries that have ratified the relevant IMO resolution, there is still a lot of misunderstanding about the presentation of vectors on an ARPA display and how they should be interpreted. The author offers a tutorial to correct this misunderstanding, explaining vector presentation, the drift factor, and true and relative motion. He concludes by listing 13 points to be borne in mind to deduce the "true picture" from an ARPA display.

  • Availability:
  • Supplemental Notes:
    • Journal article; ARPA displays
  • Authors:
    • Hughes, T
  • Publication Date: 1988-10

Media Info

  • Pagination: 4 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00656458
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM