The expansion and increasing use of ocean-weather-monitoring data is the most important factor relevant to marine-related activities as well as residential and industrial growth in coastal areas. Natural disasters occurring in or originating from the oceans are largely functions of weather conditions. This paper presents a marine weather information service system based on data from the Korea Meteorological Administration (KMA), the Korea Hydrographic and the Oceanographic Administration (KHOA), and the Korea Astronomy and Space Science Institute (KASSI). This service system can provide Automatic Identification System (AIS) information as displayed on the Electronic Navigation Chart (ENC). The system provides information such as channel markers, sunrise, sunset, low tide, high tide, and weather notifications on the ENC via the Internet and mobile devices using the user's location information or their set location. A map is provided in the tile format. To improve tile-map speed, the information is transmitted only when the user finds a new location and previous data on that client has been stored. In the future, provision of AIS information through mobile devices not only can secure the safety of the ships but also do the role of E-navigation which identifies its location in advance.
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