9Certain sea installations to be part of Australia

9  Certain sea installations to be part of Australia  (1) For the purposes of this Act, a sea installation that:  (a) becomes installed in an adjacent area or in a coastal area after the commencement of this subsection; or  (b) at the commencement of this subsection, is installed in an adjacent area or in a coastal area; shall, subject to subsection (2), be deemed to be part of Australia and shall be deemed not to be a place outside Australia.  (2) A sea installation that is deemed to be part of Australia because of the operation of this section shall, for the purposes of this Act, cease to be part of Australia if:  (a) the installation is detached from its location for the purpose of being taken to a place outside the outer limits of Australian waters; or  (b) after having been detached from its location otherwise than for the purpose referred to in paragraph (a), the installation is moved for the purpose of being taken to a place outside the outer limits of Australian waters.