Boating Coach US
Boat capacity and constructionQuestion 323 of 352

May a manufacturer give the same hull identification number to two boats?

  1. No, one number goes to one boat only
  2. Yes, if the boats are twins
  3. Yes, if built in one week
  4. Yes, if sold to one owner
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Correct answer: No, one number goes to one boat only

Each boat must have its own number.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 181: Manufacturer Requirements, § 181.23 Hull identification numbers required

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Questions last reviewed: 18 October 2026