RCW 77.15.590: Commercial fishing vessel—Unlawful use for recreational or charter fishing—Penalty.

(1) A person is guilty of unlawful use of a commercial fishing vessel, except as may be authorized by rule of the commission, for recreational or charter fishing if the person uses, operates, or controls a vessel on the same day for both:

(a) Charter or recreational fishing; and

(b) Commercial fishing or shellfish harvesting.

(2) Unlawful use of a commercial fishing vessel for recreational or charter fishing is a gross misdemeanor.