In order for you to operate your vessels crude oil wash system, the cargo tanks to be washed must be which of the following?

Correct Answer: Option B — inerted

Under 33 CFR 157.160 and SOLAS regulations, crude oil washing produces significant electrostatic charges and hydrocarbon vapors. To prevent explosions, cargo tanks must be fully inerted with an oxygen content not exceeding 8% by volume before commencing COW and continuously monitored throughout the entire washing process.