Future fuels: Reaping the benefits of green fuels without bunkering them on ships?

Book and claim and mass balance systems could help gain the benefits of future fuels and still use existing infrastructure

https://www.tradewindsnews.com/business-focus/future-fuels-reaping-the-benefits-of-green-fuels-without-bunkering-them-on-ships-/2-1-1556240