Wash. Rev. Code § 79A.60.030
A person shall not operate a vessel in a negligent manner. For the purposes of this section, to "operate in a negligent manner" means operating a vessel in disregard of careful and prudent operation, or in disregard of careful and prudent rates of speed that are no greater than is reasonable and proper under the conditions existing at the point of operation, taking into account the amount and character of traffic, size of the lake or body of water, freedom from obstruction to view ahead, effects of vessel wake, and so as not to unduly or unreasonably endanger life, limb, property or other rights of any person entitled to the use of such waters. Except as provided in RCW 79A.60.020, a violation of this section is an infraction under chapter 7.84 RCW.
RCW 79A.60.030
Intent-1993 c 244: See note following RCW 79A.60.010.