Maritime OT Playbooks & Implementation Hub
Step 03: Engineering Tactical Defenses & Hardening Procedures
Standardized operational procedures for securing vessel assets. These playbooks translate IACS UR E26/E27 requirements into actionable engineering steps for network segmentation, system hardening, and resilient incident response.
Network Segmentation
Procedures for establishing Zones and Conduits (IEC 62443). Design and deploy secure digital boundaries to isolate Bridge, Engine, and Cargo OT networks.
Open Playbook →OT System Hardening
Specific hardening guides for PLCs, HMIs, and Integrated Bridge Systems. Secure the hardware layer against unauthorized local and remote access.
Open Playbook →Incident Response
Ready-to-use checklists for GPS spoofing, ransomware on SATCOM, and loss of critical OT data. Maintain seaworthiness during a cyber event.
Open Playbook →1. Define Zones
Use the Network Segmentation Playbook to map your vessel’s OT assets into logical zones (Navigation, Power, Cargo).
2. Apply Controls
Deploy the technical hardening steps from our OT Guides to each zone, focusing on access control and protocol integrity.
3. Document Evidence
Download our Audit Templates to record your implementation. This is the evidence required for Step 04: Certify.