Except for the vessels exempted under RCW 88.16.070, every vessel that operates in the waters of the Puget Sound pilotage district or Grays Harbor pilotage district must employ a pilotage service provider licensed under the provisions of RCW 88.16.090 and must pay the applicable pilotage rates and charges in accordance with the applicable tariff.
Wash. Admin. Code § 480-160-005