An evaluation of the harbor of Yokosuka, Japan as a typhoon haven.

Abstract

This study is an evaluation of the port of Yokosuka, Japan as a typhoon "haven." Characteristics of the port discussed include the topographical effects on winds during the passage of tropical cyclones, port facilities, wave action and storm surge. Problems to be considered when remaining in port and possible evasion procedures for ships sortieing are examined. Tropical cyclone tracks from 1947-1973 for the western North Pacific'were analyzed to determine the probability of threat to the port. Observations by the author and conversations with harbor authorities are utilized in arriving at conclusions. In most instances the results show that the port of Yokosuka is a safe typhoon haven. To aid commanders in their decision making, an operationally oriented flow diagram is presented which summarizes the location of various sections of the text.