Pete, I have a couple of these but they're not particularly satisfactory. I've had them a year or so. Firstly, the screw caps don't seal properly so I fitted O-rings. When they are lifted to pour they are slippery and there is no hand hold for the bottom. The caps have split around their top edge after being closed tightly for a long time and the plastic cuts and bruises quite easily. I've not used them for carrying fuel within the boat but I could imagine they would wear away by fretting if they were strapped to a rough deck. Another benefit real jerry cans have is three handles so that you can carry two in each hand.
Prairie, thanks for the pictures.
I'm interested in the ones Prairie has because they appear thicker, the screw cap looks sturdy (although it would be better offset like a standard jerry can) and they have the three carrying handles.
I emailed the company in Toronto and they replied quickly asking where I was and they would recommend a supplier. After I told them they haven't bothered to respond even though I said I was happy to buy them from Canada.