USCG Exam PracticePollution prevention and environmental awareness
A vessel is operating more than 12 nautical miles from the nearest land but is NOT proceeding enroute. Under 33 CFR §151.10, which set of discharge conditions applies to oily bilge water from its machinery spaces?
- A. The vessel may discharge freely because it is beyond 12 nautical miles
- ✓ The vessel must meet the same conditions as if it were within 12 nautical miles, including the 15 ppm bilge alarm requirementCorrect
- C. The vessel must retain all oily mixtures on board regardless of oil content
- D. The vessel may discharge provided the oil content is less than 100 ppm and it is not in a special area
Why B is correct
33 CFR §151.10(d) specifies that a vessel more than 12 nautical miles from the nearest land that is NOT proceeding enroute must comply with the conditions in §151.10(b)(1) through (b)(5), which include the 15 ppm limit and the requirement for an approved 15 ppm bilge alarm. The more permissive enroute conditions of §151.10(a) do not apply.
Cited:33 CFR §151.10