Question 2601 Deck General

The correct answer is D) 100%. According to the regulations governing the operation of non-ocean going vessels, all accumulated oily waste must be retained on board until it can be properly disposed of at an approved facility. This is to prevent the discharge of oil or oily mixtures into navigable waters, which is prohibited under the Clean Water Act and other environmental regulations. The vessel must be able to retain 100% of its oily waste on board, as there is no allowance for discharging any portion of it. The other answer choices (25%, 50%, 75%) are incorrect because they would allow for the discharge of some amount of oily waste, which is not permitted for non-ocean going vessels.