The proposed bill aims to reduce the environmental impacts associated with the operation of ocean-going vessels by mandating the use of low-sulfur fuels when these vessels approach Washington shores. It establishes a new chapter in Title 70A RCW, which includes definitions for key terms such as "ocean-going vessel," "marine diesel oil," and "regulated waters." Starting January 1, 2028, vessels operating in regulated waters must not exceed a maximum sulfur content of 0.1 percent in their fuel. The bill also outlines record-keeping requirements for vessel operators to ensure compliance with these fuel standards and provides the Department of Ecology with the authority to adopt rules for implementation.

Additionally, the bill allows for the possibility of noncompliance fees for those unable to meet the fuel requirements due to circumstances beyond their control, such as inadequate fuel supply or the need for vessel modifications. The fees collected will be directed towards port electrification and emission reduction activities. The legislation also prescribes civil penalties for violations and establishes a vessel sulfur pollution account to manage the funds generated from these fees. Overall, the bill is designed to protect public health and the environment by regulating emissions from ocean-going vessels operating near Washington's shores.