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A Maritime Mobile Service Identity (MMSI) is a series of nine digits which are sent in digital form over a radio frequency channel in order to uniquely identify ship stations, ship earth stations, coast stations, coast earth stations, and group calls. These identities are formed in such a way that the identity or part thereof can be used by telephone and telex subscribers connected to the general telecommunications network to call ships automatically. ==Types== There are now six kinds of maritime mobile service identities: * Ship station identities, * Group ship station identities, * Coast station identities, * Group coast station identities. * SAR aircraft * Navigational aids and craft associated with a parent ship 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Maritime Mobile Service Identity」の詳細全文を読む スポンサード リンク
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