The UN Convention on the Law of the Sea, while giving new maritime
rights and interests to states, does not break the existing maritime
legal order or affect the vested maritime rights of the states. The
systems of archipelagic waters, exclusive economic zone and continental
shelf provided for by the Convention allow states to extend their
sovereignty or sovereign rights to wider sea areas. However, states can
extend their sovereign rights only to areas traditionally recognized as
open seas and, in doing so, they may not infringe upon the vested
territorial sovereignty or sovereign rights of other states. The various
historical rights enjoyed by China over the South China Sea are vested
rights that had been established long before the entry into force of the
Convention.