I wouldn't expect these structures to remain tax-free for long. > 1. In the exclusive economic zone, the coastal State shall have the exclusive right to constr

I wouldn't expect these structures to remain tax-free for long. > 1. In the exclusive economic zone, the coastal State shall have the exclusive right to construct and to authorize and regulate the construction, operation and use of: > (a) artificial islands; > (b) installations and structures for the purposes provided for in article 56 and other economic purposes; > (c) installations and structures which may interfere with the exercise of the rights of the coastal State in the zone. from Article 60 http://www.un.org/Depts/los/convention_agreements/texts/unclos/part5.htm http://www.un.org/Depts/los/convention_agreements/texts/uncl...