HB 4148 modernizes the records management, taxation policies, and procurement procedures for navigation districts, port authorities, and certain harbor facilities. It allows these entities to establish electronic record storage standards, exempts port commissions from certain closed-meeting recording requirements related to cybersecurity, raises the spending limit for routine contracts and purchases, and updates tax definitions for navigation-related commerce. The bill also amends competitive bidding procedures for port authorities and modifies taxation provisions to better define maritime business operations.