Designed to display and operate properly using Internet Explorer. Move the mouse cursor over a map control and click to select/activate or over an icon and click to display its information. Double-clicking on a specific map area will center and zoom the map to that area. A wheel-mouse will zoom the map in and out using the wheel inside the map area. You can drag the map by the click (mouse cursor changes to a fist) and drag method or use the map overview (bottom right-hand corner) to reposition the main map display. A right-click popup context menu is available for zooming/centering. Clicking on a name in the Underway/Docked lists moves the map to that locaton and displays its information. Ship range/bearing and time-to-closest-point-of-approach (TCPA) are calculated from Welcome Island (WEC) calling-in-point (CIP) for the Port of Thunder Bay (TUN).

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 Grid   Rings   Lanes      

Legend   SAR aircraft   highspeed watercraft   sail or nonmotorized   tug or ITB (integrated tug & barge)    antipollution, SAR, CG, DND, police, diving, towing, fisher, unspecified, etc.   general, bulk cargo, etc.   tanker, hazardous cargo, etc.   passenger, ferry, etc.   manned VTS or AIS monitor station   lighthouse station   ODAS weather buoy

Underway Docked

Arrivals Great Lakes  Cdn Ship Search   US Ship Search   International Ship Search   Cdn Coast Guard   US Coast Guard   Marine WX   Great Lakes OBS
Boating Safety   RAMN   NOTMARS   List of Lights   Ice Service   Hydrographic Service   Cdn Water Levels   US Water Levels   Voice Water Levels 

Information on AIS and decoding software is available at Shipplotter. For general map questions, see Google Maps API.