USC&GS Westdahl on sea trials at Portland, Oregon, in 1929
|Career (United States)||100x35px|
|Namesake:||Ferdinand Westdahl (1843-1919), who served in the U.S. Coast and Geodetic Survey 1867-1919|
|Length:||77.5 ft (23.6 m)|
|Beam:||15.5 ft (4.7 m)|
|Draft:||7.5 ft (2.3 m)|
Westdahl was built in 1929 at Portland, Oregon, and entered Coast and Geodetic Survey service that year. She spent her career along the United States West Coast and in the waters of the Territory of Alaska.
Westdahl was retired from Coast and Geodetic Survey service in 1946.