In Washington state an operator in an incident can be charged with homicide by watercraft if a person dies and what other requirements?

In Washington state, an operator can be charged with homicide by watercraft if a person dies due to the operator's negligent or reckless behavior while operating the vessel. Specifically, the operator must have been under the influence of alcohol or drugs, or their actions must have demonstrated a disregard for the safety of others. Additionally, the incident must occur in navigable waters of the state while the operator is in control of the watercraft.