The Halit Bey, which is about 160 metres long, was heading toward Trois-Rivieres when it hit ground near Grondines, southwest of Quebec City.
A spokeswoman for the Transportation Safety Board said the accident caused no apparent pollution.
Julie Leroux said three investigators were sent to the scene and were gathering information aboard the tanker to determine whether there would be a more in-depth probe.
Coast guard spokesman Michel Plamondon said the ship was able to resume its vogage because of rising tides.
Leroux said it got going with the assistance of another vessel.
The tanker was built in 2009 and is registered in the Marshall Islands in the Pacific Ocean.