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1,384 Vues · 10/05/26
How To Use A Secchi Disk with US Sailing's Reach Initiative
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11/01/18
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Have you ever wondered how to measure water clarity using a Secchi disk? Join US Sailing Reach Master Instructor Trainer and learn a few tips about using the disk and taking readings.
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1,384 Vues · 10/05/26
