Boating Coach US
Federal law and registrationQuestion 17 of 352

A boat is no longer mainly used in the State that issued its certificate. After how long is the certificate invalid?

  1. 10 days
  2. 30 days
  3. 60 days
  4. 180 days
Show answer

Correct answer: 60 days

The certificate becomes invalid 60 days after the principal State changes.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 173: Vessel Numbering and Casualty and Accident Reporting, § 173.77 Validity of certificate of number

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Questions last reviewed: 18 October 2026