An advantage of COW is...

• A. Saves time
• B. All of the above
• C. Prevents solidification
• D. Reduces stripping

Answer: (B)

Crude Oil Washing uses the cargo oil itself as the cleaning solvent, circulating it through the tanks to remove residues. This approach saves time because it cleans efficiently without requiring separate wash water or extensive manual cleaning steps. It also helps prevent solidification of residues, since the oil keeps paraffin‑ and waxy deposits in solution rather than letting them crystallize and stick to tank surfaces. In addition, it reduces stripping losses because the cleaning solvent is cargo oil that is returned to the cargo system, improving overall cargo recovery rather than wasting material during the cleaning process. Since these three benefits occur together with COW, the option that includes all of them is the best choice.