When you are transferring fuel oil from one double bottom tank to another, precautions to be observed should include __________.

Correct Answer: Option A — sounding the tanks frequently and reducing the transfer rate while topping off

Transferring fuel between double bottom tanks necessitates continuous ullaging or sounding and reduced pumping speeds during final stages to prevent overboard discharges. Strict adherence to vessel Safety Management Systems and environmental regulations avoids catastrophic deck spills and overboard pollution during critical transfer evolutions.