USCG Exam PracticeMARPOL and discharge regulations
Under 33 CFR §151.13, which of the following is a required condition for the discharge of processed bilge water from machinery space bilges within an Annex I special area by a vessel of 400 gross tons or over?
- A. The bilge water may originate from cargo pump room bilges provided it passes through an oily-water separator
- ✓ The oily-water separating equipment must be equipped with a device that automatically stops discharge when oil content exceeds 15 ppmCorrect
- C. The vessel must be at anchor or moored at a distance of more than 12 nautical miles from land
- D. The oil content of the effluent after dilution must not exceed 15 ppm
Why B is correct
33 CFR §151.13(d)(6) requires that the oily-water separating equipment be equipped with a device that stops the discharge automatically when the oil content of the effluent exceeds 15 ppm. The bilge water must not originate from cargo pump room bilges per §151.13(d)(1), the vessel must be proceeding en route per §151.13(d)(3), and the 15 ppm limit applies without dilution per §151.13(d)(4).
Cited:33 CFR §151.13