Algoma Sailing Club
St. Mary's River,  Sault Ste. Marie, Ontario, Canada

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AIS Marine Traffic.  Name those ships moving in the river!  Note: the amount of ships displayed depends on receiver coverage.

Note: The Marine Traffic mapping above is new AIS volunteer organization that you can join. To see more boats displayed on the Great Lakes try visiting that have far more dedicated receivers.

The Algoma Sailing Club is located just north of Topsail Island within Bellevue Park and the Club's members sail and race on the St. Mary's River. These same waters are also busy with many Ships and Freighters as they journey up to Lake Superior or down to Lake Huron. Due to the difference of water heights between the two lakes, all ships will require docking and travelling through the International Soo Locks, shown on the far left.

A.S.C. Members can also show their sailboat positions on the map now by using a Cellphone or iphone with an Android apps.

You can Zoom In or Out on the map using your mouse, and or grab and drag (or use the tool bar on the left) to see more ships and their tracks in various areas. You can even take a look what's travelling down under the Mackinaw Bridge on Lake Michigan. Hold your mouse on the ships to see their speed and headings.



  • The Automated Identification System (AIS) system was created in 2004 is used for large ships to continually broadcast their position (up to 50 miles) to other ships as a warning system to help avoid collisions. The AIS system uses a special transponder that transmits digital information with each ship's configurations and movements on a VHF Marine Radios channel. It is a requirement for all larger ships, boats, and passenger vessels to fitted with AIS. Shore based transponders can also broadcast warnings to ships. It has been suggested that in future this newer technology may soon replace ships' high power radar system and shore based lighthouses. A network of many AIS shore based receivers can forward the AIS information to a collection service and hence this new technology is ideal for Marine Search and Rescue teams. Now with the internet, many Volunteer organizations provide free AIS mapping of ship movements. In the last 6 yeas, newly designed space AIS satellites have been launched and have started monitoring data.


  • For the Recreational Boaters, a spawned technology in a slightly different form is known as Digital Selective Calling (DSC) that uses GPS positioning on Marine VHF Radios. This allows public boaters to privately call other boaters and to broadcast emergencies with GPS positions to all boaters nearby and is ideal for Search and Rescue Teams. DSC also helps reduce unneeded VHF radio chatter for required commercial ships usage. Currently there are some volunteer DSC  mapping organizations that are trying to form a DSC mapping service but DSC broadcasts are manual and non-continuous. DSC Broadcasts can be also Fleet configured to broadcast one message to an entire fleet of ships within range. Hence making it also ideal for local sailing and boater clubs to have their own DSC Fleet number.


  • Time proven commercial, Emergency Position Indicating Radio Beacons (EPIRB) use a combination of  satellite and shore based receivers for reporting emergencies to Search and Rescue Organizations. They also have the unique ability of also transmitting a local homing signal that can be received by passing ships, when EPIRBs are activated or immersed in water.

Personal GPS Locators.

  • New low cost personal GPS transponders/locators are available and as an example, is SPOT that use combinations of satellite based network and Google Maps.

Website hosted by Stoney Creek Solutions June 1, 2007
Last Update: Updated November 23, 2012
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