Patent ID: 8463470
Filing Date: 2013-06-11
Classification: G01C,G01S,G06T,G09B

Abstract:
1. A method for identifying shallow water regions by a graphical output of a depiction of at least one selected area of a body of water to a Global Positioning System (GPS) device coupled to a display, the display being coupled to a GPS plotter, the method comprising: retrieving at least one chart of one or more regions of a body of water from a chart library provided on computer memory, the chart comprising a plurality of bottom depths below a surface of the one or more regions of the body of water, the chart being configured to be output on the display; determining a lower limit value of bottom depths associated with a shallow water region to be highlighted on the display simultaneously with the chart; inputting the lower limit value of the bottom depths to be highlighted; identifying a shallower contiguous region on the chart based on the plurality of bottom depths on the chart between the surface of the body of water and the lower limit value; and simultaneously outputting one or more indications representative of the shallower contiguous region with the chart on the display to highlight the shallow water region.