As ships subject to IACS UR E26·E27 enter their delivery period, a new question is moving to the center of the industry: does a ship with the required compliance documentation actually remain resilient under a real cyberattack, or has it merely complied on paper? This white paper argues that meeting UR E26·E27 is not a matter of after-the-fact documentation, but must be carried out as a Secure-by-Design framework that connects assets, threats, security requirements, and test evidence from the design stage onward.
Drawing on the regulatory shift (IMO, EU CRA, and recent U.S. legislation) and on precedents from the automotive, aerospace, and defense industries, it presents clause-by-clause approaches to UR E26·E27, a ship-systems threat-modeling methodology, the basis in international standards, and the cost and efficiency benefits of design-stage security.
