Keep in mind that Camping Gaz
is butane, not propane
. I think you will find that it is near impossible to get refills.
Even though you won't like the idea, I think you're best off buying
a couple of US 8 pound cylinders and store them lashed somewhere above decks near your gas locker. If you plan to stay out of Europe
for some time, I would advise aluminium cylinders; if it's just for s short while, get cheap steel
. There are also small "barbecue" bottles that normally screw into the BBQ-regulator directly. Those would fit your locker and there are adapters available to connect them.
BUT... check your stove documentation
. My stove came with two sets of nozzles, one for propane
and another for butane.