USCG Exam PracticeDanger bearings and danger circles
Under 33 CFR §83.07, which statement correctly describes the standard for making assumptions when assessing risk of collision using radar?
- A. Assumptions based on a single radar observation are acceptable if the bearing appears steady
- ✓ Assumptions shall not be made on the basis of scanty information, especially scanty radar informationCorrect
- C. A single radar plot is sufficient to determine that risk of collision does not exist
- D. Radar plotting is only required when visibility drops below one nautical mile
Why B is correct
33 CFR §83.07(c) explicitly states that assumptions shall not be made on the basis of scanty information, especially scanty radar information. A single observation is insufficient to establish or dismiss risk of collision; systematic observation is required per §83.07(b).
Cited:33 CFR §83.07