An Act relating to the sulfur content of marine fuel.

SB 253 sets limits on sulfur content in marine fuel used by vessels operating in Alaska's coastal waters. It requires that marine fuel contain no more than 0.1% sulfur by weight within Alaska's emission control area (aligned with the North American Emission Control Area) and no more than 0.5% sulfur by weight outside that area. The bill includes exemptions for ocean voyages without multiple stops, emergencies, government vessels, and vessels meeting equivalent sulfur output standards. These rules directly affect all commercial and private vessel operators using marine fuel in Alaska's coastal waters.