Two cargoes of 100,000 tonnes each, one by Lukoil and one by small producers, were added to the plan, the document showed.
Top-ups to ESPO Blend plan were made due to supply disruption via one of Russia's main exports routes - the Druzhba pipeline, traders said.
The ESPO Blend loading plan for May was topped up with an additional 100,000 tonnes, which set loadings to an historical high of 2.94 million tonnes.