(1) Puget Sound pilotage district - The legislature has declared that tariffs for pilotage services provided under chapter 88.16 RCW in the Puget Sound pilotage district shall be established by the commission. The purpose of these rules is to administer chapter 81.116 RCW in setting or amending pilotage tariff rates or charges for pilotage services.

(2) Grays Harbor pilotage district - The legislature has declared that in setting rates or charges for pilotage services provided by the Grays Harbor pilotage district under chapter 88.16 RCW, the commission will consider the recommendation of the port district. The purpose of these rules is to administer chapter 81.116 RCW in setting or amending pilotage tariff rates or charges for pilotage services.