9
MAY 2026
Marine Fuels
For years, the marine industry has been moving toward 
lower emissions and more sustainable operations. Now, 
that shift is starting to translate into real-world fuel 
decisions for passenger vessel operators. For decades, 
diesel has been the dominant marine fuel—reliable, 
energy-dense, and supported by global infrastructure—
and it will likely continue to be for the foreseeable fu-
ture based on availability and cost. But with tightening 
emissions regulations, changing sustainability goals, and 
growing pressure from regulators and customers alike, 

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