In its latest Safety Digest, the UK MAIB described an incident of a Heavy Sulphur Fuel Oil overflow during bunkering operation. MAIB highlighted that at least one of the two isolating valves that caused the incident could have been closed fully if it had been checked as per the checklist.
The incident
An LPG carrier was at anchor awaiting a berth when instructions to take bunkers were received. A bunkering plan was completed by the ship’s crew prior to the bunker barge arriving alongside.
A...
https://safety4sea.com/poor-pre-bunker-checklist-contributes-to-hsfo-overflow/