Prepare for the Basic Tanker Operations Test. Learn with detailed flashcards and multiple-choice questions designed to boost your competence. Each question provides hints and explanations. Enhance your understanding and pass the exam with confidence!

Multiple Choice

Crude Oil Washing is an effective way to remove oil and sediment from crude oil tanker cargo tanks and lessen the ROB (Remaining on Board).

Crude Oil Washing uses the cargo itself as the cleaning fluid. By circulating crude oil through spray lines and pumps, the wash scrubs the tank walls, dislodging oil residues and sediment that cling to surfaces. The loosened material is carried back into the cargo system for discharge, so more of the oil is recovered rather than left behind as residue. Because this process recovers oil that would otherwise remain in the tanks and reduces sludge buildup, the amount of oil remaining on board after discharge is decreased. In other words, COW cleans more effectively and with better oil recovery, making it a proven method to reduce ROB.

Crude Oil Washing uses the cargo itself as the cleaning fluid. By circulating crude oil through spray lines and pumps, the wash scrubs the tank walls, dislodging oil residues and sediment that cling to surfaces. The loosened material is carried back into the cargo system for discharge, so more of the oil is recovered rather than left behind as residue.

Because this process recovers oil that would otherwise remain in the tanks and reduces sludge buildup, the amount of oil remaining on board after discharge is decreased. In other words, COW cleans more effectively and with better oil recovery, making it a proven method to reduce ROB.