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USCG Exam PracticeChart symbols and abbreviations (Chart No. 1)

On a US nautical chart, the letter code 'M' annotated near an anchorage indicates what type of bottom?

  1. A. Marl
  2. ✓ MudCorrect
  3. C. Mixed
  4. D. Marble

Why B is correct

Chart bottom-type codes use 'M' to denote mud. This information is used to assess holding ground quality when anchoring.

Cited:Light List — Bottom Type Codes

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On a US nautical chart, the letter code 'M' annotated near an ancho… — USCG Exam Practice · CaptainsGround