U.S. Army Corps of Engineers' Motor Vessel (MV) Puget crew transfer large woody debris and other obstructions to navigation from the vessel to a barge, located at Lake Washington Ship Canal and Hiram M. Chittenden Locks, Seattle. Seattle District’s Navigation Section removes and disposes derelict objects, waterfront debris and derelict structures, and other sources of drift, that may damage vessels or threaten public health, recreation or the environment at publicly maintained commercial boat harbors.