What is this on the barge?

Spyderweb

Have spotted this a few times going in both directions on the St. Lawrence River.  Any ideas what this structure is?

TonyG13

Fits the description, so maybe:

https://mckeil.com/our-fleet/alouette-spirit/

And another photo of it on ShipSpotting:

https://www.shipspotting.com/photos/2829147

Spyderweb

@TonyG13 I think you nailed it!  Description even says it operates in my neighborhood.

YYZRC

That old girl could really use a coat of paint.

rasbury

Is it new illegal imigrant transport?

Spyderweb

Several of us up here thought it looked like a prison.

mbnarney

It's the canal calaboose