USCG Exam PracticeRule 7 — Risk of Collision
Under the Inland Navigation Rules, which standard governs the use of radar information when determining risk of collision?
- A. A single radar observation is sufficient to determine that no risk exists if the bearing is changing
- ✓ Assumptions shall not be made on the basis of scanty information, especially scanty radar informationCorrect
- C. Radar information takes precedence over visual bearings in all circumstances
- D. Radar plotting is only required in restricted visibility conditions
Why B is correct
33 CFR §83.07(c) expressly prohibits making assumptions on the basis of scanty information, especially scanty radar information. The rule does not establish a hierarchy between radar and visual bearings, nor does it limit plotting to restricted visibility.
Cited:33 CFR §83.07