USCG Exam PracticeChart symbols and abbreviations (Chart No. 1)
On a US nautical chart, the letter code 'M' annotated near an anchorage symbol indicates what bottom characteristic?
- A. Marl
- ✓ MudCorrect
- C. Mixed
- D. Mussels
Why B is correct
Chart bottom-type codes use 'M' to denote mud. This information is used to assess holding ground quality for anchoring. Other codes include S (sand), R (rock), and Co (coral). (Light List — Bottom Type Codes)