When a port commission deems it for the best interests of the district and the people thereof and in furtherance of its general plan of harbor improvement, or industrial development, or both, it may sell and convey any property or part thereof owned by it within an industrial district. This section shall not be limited by chapter 53.08 RCW, pertaining to powers of port districts.
RCW 53.25.110
Harbor improvement plan: RCW 53.20.010.