About OSHIMA KOTA
About FURUYA TADASUKE
About KITAGAWA NAOYA
About SHOJI RURI
About 日本航海学会講演予稿集(Web)
About smartphone
About ship
About distress
About salvage(rescue)
About communication system
About portable telephone
About communication network
About standard(specification)
About heartbeat
About boat
About message
About communication environment
About LTE
About Navigation and practical business
About Mobile communication
About スマートフォン
About 生体情報
About 小型船舶
About 海難
About 通報システム