Honda Motor Co., Ltd.

Ryo Ueyama

Go Nakamoto

Kanako Ikeda

The present invention contributes to vessel navigation safety, by applying conventional navigation technology and using smartphones or other wireless communication terminals to provide a chart according to vessel type. Provided is a server system (), which: receives, from wireless communication terminals () which are carried by users aboard vessels (), position information of the wireless communication terminals () and information of the sizes of the vessels (); creates, in response to the sizes of the vessels, navigation trajectory information formed from time series position information of the vessels (); and, with the navigation trajectory information as an input, updates navigable course information for each size of the vessels ().

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Tokyo, Japan

Ryo Ueyama