Question 57 ONC02 - Second Mate/Third Mate Unlimited Tonnage

The Correct Answer is D ### Why option D ("All of the above") is correct The definition of "oil" used in Oil Pollution Regulations (such as those derived from MARPOL Annex I) is deliberately expansive. Regulations define "oil" not only as crude oil and refined petroleum products but also as any material, mixture, or residue derived from oil. The purpose is to ensure that all substances capable of causing pollution, including waste streams and by-products, are regulated under the same framework. Since Sludge, Fuel oil, and Oil refuse all fall under this broad regulatory umbrella, "All of the above" is the correct and comprehensive answer. *** ### Why each of the other options is incorrect **A) Sludge** Sludge is incorrect because while it is a type of oil residue and is regulated, selecting only Sludge excludes other major regulated categories, such as refined products (like fuel oil) and crude oil, which are also considered "oil" under the regulations. **B) Fuel oil** Fuel oil is incorrect because, although it is a primary example of regulated oil (a refined product), choosing only Fuel oil excludes residues and waste streams like Sludge and Oil refuse, which are explicitly included in the definition. **C) Oil refuse** Oil refuse is incorrect because, while it covers oil waste streams, it is not comprehensive. It excludes primary regulated substances like crude oil, gasoline, and refined products (like fuel oil) that are still defined as "oil" even before they become refuse.