A bill to direct the Secretary of Transportation to establish a program to support the research, design, development, demonstration, and deployment of zero-emission vessels and retrofit or replacement of existing vessels with zero-emission vessel technologies and charging infrastructure or fueling infrastructure, and for other purposes.

This bill, designated as S. 4935 in the 119th Congress and introduced on June 24, 2026, aims to direct the Secretary of Transportation to create a program focusing on advancing zero-emission vessels. The program supports research, design, development, demonstration, and deployment of these vessels along with retrofitting or replacing existing vessels with zero-emission technologies and related infrastructure.