Internav also has strong links with commercial shipping, both in Canada and overseas. The company has been the leading supplier of Loran C navigation equipment at every level of Canada's commercial fleets, from deep water ships to small inshore fishing vessels.

For the offshore exploration and hydrographic survey market, Internav has developed a range of rugged, precision Loran C systems, which have been used extensively off the United States and Canada, the North Sea, and in other locations where superior performance and accuracy were demanded. Users of Internav Loran C hydrographic systems include the U.S. Navy, U.S. Military Sealift Command and the U.S. Naval Oceanographic Office.

A new navigation receiver, the GC500 (NATO 5825-21-912-2823) combines Loran C and GPS to derive a single optimized positional fix, and has been installed in the Canadian Navy's new Patrol Frigates.