On a newly constructed oceangoing vessel of 10,000 gross tons, equipped with an approved 100 ppm oily water separator, and bilge monitor, the bilge monitor continuous record must be __________.

Correct Answer: Option C — maintained onboard for not less than 3 years

MARPOL Annex I and 33 CFR regulations require all continuous monitoring records, logs, and oily water separator outputs from approved 100 ppm or 15 ppm bilge monitors to be retained onboard for a minimum duration of three years for Coast Guard inspection.