A STUDY CONCERNING THE VISUAL TRANSMISSION FOR NAVIGATORS FROM THE VIEWPOINT OF SAFE NAVIGATION--A STUDY ON BACKGROUND LIGHTS--

Little study has been made in the past on background lights, which are one of the factors which hinder the navigator's vision during night coastal navigation. We have made an on-the-spot investigation of the background light situation, and conducted an indoor experiment, based on the findings of that investigation, to see how lights that must be recognized by the navigator look in relation to background lights. This experiment has provided useful data. Furthermore, we were able to grasp quantitatively how the navigator's vision is affected by the angular deflection of background lights from his line of sight, convert the quantity of background lights to an absolute value, and obtain useful suggestions for safe navigation in the process of the study.

  • Supplemental Notes:
    • Published in 30th Anniversary Commemorative Research Study Compilation.
  • Corporate Authors:

    Japan Institute of Navigation

    Tokyo University of Mercantile Marine, 2-1-6 Etchujima, Koto-ku
    Tokyo,   Japan  135-8533
  • Authors:
    • Wakao, T
    • Kuwazaki, K
    • Inagaki, J
  • Publication Date: 1978-11

Media Info

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Filing Info

  • Accession Number: 00193557
  • Record Type: Publication
  • Source Agency: Japan Institute of Navigation
  • Files: TRIS
  • Created Date: Apr 25 1979 12:00AM