Summary
YOKOHAMA
SUMMARY
The conclusion reached in this study is that the Port of Yokohama is not a typhoon haven. The primary factors in reaching this conclusion are: (1) Mizuho Wharf where U. S. Navy ships would most likely moor, offers no protection from wind, and (2) Local port authorities state that ships should leave their berths if winds of 30 kt or greater are forecast.
The best option for U. S. Navy ships in the Port of Yokohama is to move to Fleet Activities, Yokosuka before the onset of any storm. Yokosuka is considered to be a "safe" typhoon haven; a port in which to remain if already there, or one in which to seek shelter if at sea or elsewhere when threatened by a tropical cyclone.
Ships may move to the Nakano Se anchorage just southeast of the port to ride out a tropical cyclone. Vessels should be ready to steam to the anchor to reduce strain on the anchor chain and lessen the threat of anchor dragging during the strongest winds. Other options include moving to anchor at various other locations within Tokyo Bay or evading at sea.
Source: http://www.nrlmry.navy.mil/port_studies/thh-nc/japan/yokohama/text/summary.htm
