Is this boat (should be below) a good floor toy?

Are the openings on this toy boat I found to small and an issue for getting stuck?
I would use it as a floor toy.
Some openings are 2" (the 3 ones of the bace of the boat), some 1" (the sides of the arches on the top), some 1.5" and one large one 3" ( the one by itself on the base/hull? of the boat)
I've heard that between 1/2" and 2.5" is to small and they could get their body's stuck...

Also how can or do I need to glider proof it?