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2023 Journal Impact Factor - 0.7
2023 CiteScore - 1.4
ISSN 2083-6473
ISSN 2083-6481 (electronic version)
Editor-in-Chief
Associate Editor
Prof. Tomasz Neumann
Published by
TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
e-mail transnav@umg.edu.pl
Visual Condition at Sea for the Safety Navigation
1 Kobe University, Kobe, Japan
2 Kawasaki University of Medical Welfare, Okayama, Japan
2 Kawasaki University of Medical Welfare, Okayama, Japan
ABSTRACT: To the navigation officers of the watch (OOW?s) on the navigation bridge the environmental condition of visual acuity is the most important factor for keeping a proper look-out, as regulated by the IMO COLREG?s (Rule 5). Navigation officers are required to keep a proper look-out for prevention of (ships) collisions. There are many collision incidents at sea, and especially so under conditions of good visibility. This paper has two topics related to the illuminance and luminance from sunlight, as follows:
The first topic is the introductory explanation of the illuminance inside the navigation bridge.
The second topic is the sky luminance condition as seen by the OOW from the navigation bridge.
These two topics are fundamental factors related to visual perception at sea. The OOW on the bridge has to understand that every care must be taken, especially in fine weather conditions.
KEYWORDS: Safety at Sea, Colregs, Navigational Bridge, Visual Condition at Sea, Officer of the Watch (OOW), Look-Out, Good Visibility, Observation
REFERENCES
Narisada, K Yoshimura,Y. (1977): Adaptation luminance of driver's eye at the Entrance of Tunnel ---an Objective Measuring Method, Transactions of the 3rd International Symposium of Road Lighting Effectiveness, Karlsruhe, On pp. 5-6.
Lighting handbook ,The Illuminating Engineering Institute of Japan (IEIJ).
Vos, J. J. (1984), Disability glare - a state of the art report, CIE Journal, Vol.3, No.2.
Narisada, K. (1992), Visual Perception in Non-uniform fields, Journal of Light & Visual Environment, Vol.16, No.2.
Minnaert, M.G.J., Translated and Riviced by Len Seymour (1993), Light and color in the outdoors, p.102 - p.125, Springer-Verlag.
Furusho, M. (1995), Visual Perception of Horizon for a Good Lookout at Sea, The Journal of Japan Institute of Navigation, Vol.93, pp.35-42, In Japanese.
Furusho, M. (1997), Visual Environment for a Good Lookout at Sea, The Journal of Japan Institute of Navigation, Vol.96, pp.79-86, In Japanese
Furusho, M., Machida, K., Fujioka, Y. (1998), A Study of a Good Lookout at Sea in Case of Ship Collisions, The Journal of Japan Institute of Navigation, Vol.99, pp.101-106, In Japanese
Furusho, M. (1999), A Study of Visual Perception of the Ships for a Good Lookout at Sea, The Journal of Japan Institute of Navigation, Vol.100, pp.59-66, In Japanese
Citation note:
Furusho M., Kawamoto K., Yano Y., Sakamoto K.: Visual Condition at Sea for the Safety Navigation. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 5, No. 1, pp. 59-64, 2011
Authors in other databases:
Masao Furusho:
orcid.org/0000-0001-7085-7593
25026052000
orcid.org/0000-0001-7085-7593
25026052000
Ken-ichiro Kawamoto:
Yoshijo Yano:
Kazuya Sakamoto:
Other publications of authors:
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