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Click buttons (below) to zoom map to specific area and select only vessels in that area. Move mouse cursor over map controls/icons and click to select/activate, or display information. Double-click (left or right mouse button) or use wheel-mouse on a map location to zoom in/out. Drag map or 3D road view "standing man" icon with mouse right-click+hold. Click on ship name in Underway/Stopped lists to move map to ship's location and display its information. Range/bearing and time-to-closest-point-of-approach (TCPA) calculated from reference calling-in-point (CIP) Welcome Island (WEC), Port of Thunder Bay.
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Information on AIS and decoding sofware is available at Shipplotter. For general map questIons see Google Maps API.
Lake Superior Area Ship Filter