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Today is #WorldHydrographyDay! But what is hydrography? Read our ocean fact: oceanservice.noaa.gov/facts/hydrogra And listen to our

podcast episode, “Surveying in the Great Lakes”: bit.ly/3ty232K #OceanMonthNOAA #OceanDecade

NOAA Ship Fairweather at anchor in Yale Arm, Alaska, summer 2021. Credit: Lieutenant Shelley Devereaux/NOAA

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ALT

2:00 PM · Jun 21, 2022

@yukari73189056

Replying to

and

Hi NOAA! Is there something wrong with CLASS? Orders are not responding.

1

NOAA's Ocean Service

Replying to

@yukari73189056

and

That system is managed by

@NOAASatellites

. You can reach out to class.help@noaa.gov for assistance.