As the 2020 sulphur cap entered into force, the shipping industry saw the introduction of Very Low Sulphur Fuel Oils (VLSFOs), which has been increasing since October 2019. However, VPS notes that a rise has been observed in fuel instability leading to sediment formation from these fuels.
Veritas Petroleum Services (VPS) issues Bunker Alerts whenever fuel quality matters arise in a specific port, or region, over a short time period. As it informs, between 24th December 2019 and 21st January...
https://safety4sea.com/sediment-problems-within-vlsfos-detected-at-six-ports/