Prince Shoal Light(house)

August 15, 2019

While I was driving towards the Saguenay River on the north shore of the St. Lawrence River I noticed an odd-shaped structure out in the water.  I assumed it was some type of navigational aid for the massive cargo ships which sail east and west on the St. Lawrence.  If nothing else I thought it might just house a radio “repeater” which constantly broadcasts the message “please don’t hit me, please don’t hit me, please don’t hit me”….


I took the photo above at around 10 am when the sun was behind the object.  I took the photo below at around 3 pm as I was heading back south towards Quebec.  The sun was now behind me and I could clearly see the distinctive red and white stripes.  I was zoomed way in when I took the first photo and couldn’t make out the stripes.


Here is a better photo I found online:


(Photo credit:

I reversed the image above to show the same orientation as seen in my photos.

As the name indicates the lighthouse sits on a shoal, a small “mountain” located completely underwater.  While I thought it was way out in the middle of the river it is actually much closer to the side where the Saguenay River empties into the St. Lawrence.

PrinceShoal diagram

(Photo credit:

The image above also illustrates the “mixing” of salt and fresh water which makes this confluence of the two rivers an estuary.


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