This bill, titled the Cable Security Fleet Expansion Act, proposes significant amendments to title 46, United States Code, primarily focused on enhancing the nation's cable security capabilities. Its core purpose is to expand the existing Cable Security Fleet by increasing the minimum number of vessels from two to not less than six . To support this expansion, the bill also revises the financial provisions for the fleet. It increases the maximum annual payment per vessel from $5,000,000 to up to $7,000,000 . Furthermore, the bill substantially boosts the authorization of appropriations, allocating $56,000,000 annually for fiscal years 2027 through 2040, a significant increase from the previous $10,000,000 for fiscal years 2021 through 2035.