Abstract
The meteorological reports by ships about the sea condition of North Pacific Ocean have some imperfections, that is, the lack of data at some regions and the unreliability on the visual measurements of the sea by the crew, etc. So, we tried to calculate the velocity of the geostrophic wind and the height of the wave at more tight spot on the above ocean, using Mollie Darbyshire & L. Draper's table, with data of the World Weather Maps (Dec, 1956〜Feb, 1959), and made a model wave chart of North Pacific Ocean in winter.
