Ship Under a Bridge

2 minutes 4 seconds

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Now Playing As: Captioned (English) (change)

Every day hundreds of container ships enter and leave U.S. ports, but navigating in and out is tricky business. When navigating into ports, ship captains monitor real-time data on water conditions like tides, currents, and winds using the NOAA-created Air Gap system. This tool measures the clearance between the water surface and the bridge.