High Quality Content by WIKIPEDIA articles! USS Chehalis (PGM-94/PG-94) was an Asheville-class gunboat of the U.S. Navy and the second ship to be named Chehalis. Chehalis was launched 8 June 1968 at the Tacoma Boatbuilding Company. She was commissioned 8 November 1969. The vessel was named in honor of Chehalis, Lewis County, Washington State. Later, she was transferred to Naval Sea Systems Command and renamed Research Vessel Athena.