| 摘要 |
PURPOSE:To obtain a water temp. distribution display apparatus easy to understand water temp. distribution, by displaying tide vector data along with water temp. data in a state superposed to a track. CONSTITUTION:When navigation data Ai is generated, water temp. data Bi is taken in from a water temp. meter 4 and tide vector data Ci from a tide meter 5. A navigation apparatus 3 collectively sends these data to a sea route display device 2 which, in turn, allows RAM to store said data. Further, these data are subjected to coordinates conversion by an input key 20 and the navigation data Ai and the tide vector data Ci are converted to image data to be written in VRAM. At this time, the navigation data is stored as linear data connecting data at each point and the tide vector data is stored as image data of arrows showing a tide direction and a tide speed. A display device 1 displays the data written in VRAM by color graphic display and displays the water temp. data Bi stored in RAM by character display having a specific color.
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