Of course, but my point is that the barge is so much more massive that the idea of punching a hole all the way through doesn't really make sense, and even if that were possible, such a small hole wouldn't sink it anyway.
I'm a lot bigger than a bullet but it can still punch a hole through me.
and it won't affect your buoyancy at all.
When shot with a bullet all the water leaks out of the organic person.
When shot with a rocket all the air leaks out of the steel barge.
It only leaks out of the compartment that got punctured. The rest will keep it afloat.