Where are the international waters by the US?

Question

I am wondering where I could do what ever I wanted. US recpgnizes a 12 mile territorial zone, but a 200 mile exclusive economical zone.

A) Am I in international waters if I am 15 miles of the shore or 200 miles?

B) Is there a law that would prohibit me from, VERY hypothetical, build my own island with sand and stones in international waters?

C) To B, do I have to be outside of the 12 mile or 200 mile zone to be able to do this and be considered in international waters?

Thanks

Answer 1

From what has been answered in the past, it appears 200 miles is the limit.  You could build your own island but unless you had a way to defend it, some country could claim it for theirs.  See the below reference.