Dont know about the legality of bringing it cruising, but I do want to warn you to keep it in something with a screw on lid.
I came home about a week ago to find my cat had managed to break into the cubbard, drag the tea tin I had been storing the catnip down onto one of the galley
benches, pried the lid off, and chewed through the plastic bag.
Every inch of the boat
was covered, catnip was ground into every inch of every carpet on the boat
and she was rolled into a heap on the cabin sole
making weird noises. She spent the next day with an upset stomach and I had a whole new slew of reasons to clean everything again.
Seriously, keep it under lock and key if possible...