Accordingly, the second edition of the guidelines includes the control measures and the framework to implement such measures which were updated to incorporate the international cyber security standards for industrial control systems IEC 62443 series and the latest recommendation on cyber resilience for new ships published by the International Association of Classification Societies (IACS) in May 2020.

In addition, they introduced requirements for adding class notations to classification codes related to cyber security.

The guidelines include also current best practices for newbuilding designs by shipyards and shipbuilding owners from the perspective of identifying computer systems that should be protected from cyber incidents and of building networks to protect them.