The barge may claim that the soundings and ullage ports have been sealed by customs, or seized, or some other reasons, and therefore force the vessel to go by the volumetric flow meter only.
Remember that this may be just the first sign of an unscrupulous barge Master, and as such, be wary of other tricks of trade.
Never agree and go by the flow meter only fuel delivery
Remember whenever in doubt or have concerns always issue a letter of protest
Kaivan H. Chinoy is the Founder and Principal Marine Surveyor of AVA Marine Group, owners of Petro
Inspect and The Bunker Detectives.