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NOAA Charting and Mapping Ships

NOAA operates four large ships dedicated to hydrographic surveying: NOAA Ship Fairweather, NOAA Ship Ferdinand R. Hassler, NOAA Ship Rainier, and NOAA Ship Thomas Jefferson. Each ship is equipped with the latest echo sounding technology to measure water depth and identify submerged hazards to navigation. Each ship has 1-6 smaller boats (called launches) that are lowered into the water for surveying in shallow areas. These ships are used primarily for ocean mapping and nautical charting as part of NOAA’s mission to deliver tools and information to help mariners safely navigate the $2.3 trillion worth of cargo that comes in and out of the nation’s ports and harbors.