This is the sound of an inland vessel on river rhine, near Mannheim, Germany. You can hear the rhythmic and fluctuating vibrations of the diesel engine. Seems to be an older one. Unfortunately I oriented my Zoom H2n wrongly (90째 to the right). So most of the noise appears on the left ear.
vessel_rhine_bockelson_20151101.WAV
聲道：2
類型：wav
ship、vessel、barge、H2n、shipping、diesel、field-recording、river-rhine、engine
船、容器、駁船、H2N、運輸、柴油機、現場記錄、河萊茵、發動機
資料來源：freesound ( https://freesound.org )