Rotterdam cautions on unannounced checks for bunkering licence with MFM enforcement

The Port of Rotterdam on Friday (8 August) reminded the maritime industry of new bunkering rules that it will be enforcing, together with Antwerp-Bruges, from 1 January 2026.

From this date, all bunker vessels operating in the ports of Rotterdam and Antwerp-Bruges must use a Mass Flow Meter (MFM) when delivering residual distillates and biofuels. This technology ensures accurate measurement of fuel quantities, making bunkering more transparent, efficient, and reliable.

Port of Rotterdam warned that regular, sometimes unannounced, inspections by port authorities will be conducted to ensure compliance with its licence requirements. 

“A valid bunkering licence remains mandatory for delivering these fuels. Compliance with specific regulations is required and regularly monitored by port authorities, sometimes unannounced or triggered by market signals,” it said in a social media post. 

The port said the role of a bunker surveyor remains vital, even with MFM in place. 

“Ports strongly recommend using a qualified and recognised surveyor familiar with the system,” it added.

It stressed that the MFM system must be certified and registered with the Harbour Master before 1 January 2026. 

“Failure to comply may result in fines or revocation of the licence. If you work with a bunker barge, ensure all documentation is in order.”

In 2023, Port of Rotterdam announced that the use of a bunker measurement system for bunker vessels in the ports of Antwerp-Bruges and Rotterdam will be mandatory from 1 January 2026.

Related: MFM bunker measurement system to be mandatory in Antwerp-Bruges and Rotterdam

Photo credit: Port of Rotterdam
Published: 11 August, 2025