The Journal of the Nautical Society of Japan
Online ISSN : 2433-0116
ISSN-L : 0466-6607
Effective Number of Traffic Accident and Danger of Collision
Y. FujiiH. YamanouchiN. Mizuki
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1971 Volume 46 Pages 181-189


The estimation of collision number for a ship passing through a certain water is often requested. The first approximation of this collision number can be easily obtained as the product of (L/L_0) and the coefficient, F, mentionned in the title, where L is the length of the ship between perpenPiculars and L_0 is equal to 32m. The coefficient is defined as the number of collided ahips in the water range in unit time divided by the traffic volume summed up using (L/L_0) as the weighting faotor. The coefficients for important harbours as well as several congested straits are given and compared in a figure. An interpretation of the coefficient is tried placing Fujii's equation at starting line. Result of analysis gives the method of adjustment for minor change in the traffic volume in the water range being considered.

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© 1971 Japan Institute of Navigation
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