State of Washington was a sternwheel steamboat of the Puget Sound Mosquito Fleet, later transferred to the Columbia River.

From 1902 to 1907, the vessel was operated as a standby boat on the Tacoma-Seattle run.

Later, the vessel was assigned to the Hood Canal route.

In 1913, the vessel was transferred to the Columbia River to be operated by the Shaver Transportation Company.

Six crewmen were injured and one man was killed.