USCG Exam PracticeDanger bearings and danger circles
Under 33 CFR §83.07, which statement most accurately describes the standard for making assumptions when determining risk of collision using radar information?
- A. Assumptions may be made provided the radar has been operating for at least six minutes
- ✓ Assumptions shall not be made on the basis of scanty information, especially scanty radar informationCorrect
- C. Assumptions are permissible when the target has been tracked for at least three radar scans
- D. Assumptions may be made when the compass bearing shows an appreciable change
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. No minimum tracking time or scan count is specified as a threshold for making assumptions; the rule requires systematic observation before drawing conclusions.
Cited:33 CFR §83.07