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AhaBulb: Stuff Everyone Should Know · ahabulb.com/boat-anchor-scope

The Coast Guard's general rule says to let out how much anchor line compared to the water depth?

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  1. Five to seven times the depth
  2. Exactly equal to the depth
  3. Twenty times the depth

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References

  1. USCG, A Boater's Guide to the Federal Requirements for Recreational Boats (2023) www.uscgboating.org/assets/1/AssetManager/Boaters-Guide-to-Federal-Requirements-for-Receational-Boats-20231108.pdf Checked 2026-10-08.
  2. NASBLA ESP TR 103-2022, Technical Report: Basic Boating Knowledge Core + Plus Power higherlogicdownload.s3.amazonaws.com/NASBLA/76594a34-f3a1-4916-95ac-1e9c872170cc/UploadedImages/education/national-education-standards/ESP_TR_ESP_103_Core_Plus_Power_2022_06_01FINAL.pdf Checked 2026-10-08.

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