Marine Transportation System Resilience Assessment Guide

July 2, 2024: Cybersecurity & Infrastructure Security Agency

Marine Transportation System Resilience Assessment Guide

The Marine Transportation System Resilience Assessment Guide (MTS Guide) integrates partner agency expertise and experience, available information sources, methodologies, and datasets into a repeatable, step-by-step framework for conducting resilience assessments within the maritime domain. The MTS Guide serves as uniform guidance on assessing the resilience of ports, through advanced methods such as Bayesian Network Analysis.

Please access the Marine Transportation System Resilience Assessment Guide Here.

Originally released in May 2023, this update to the MTS Guide adds a significant addition, aiming to enhance support for planners in navigating an ever-changing threat landscape by:

  • Self-navigating users to the identified resilience assessment resources, datasets and methodologies for the chosen assessment.
  • Providing users with guidance on how and where to access publicly accessible assessments on maritime critical infrastructure assets.
  • Increasing the user’s ability to identify various assessment based on scale, scope, objective and available funding for resilience planning.
  • Providing additional clarity on how to apply the MTS Guide uniformed approach to resilience assessment methodology.
  • Expanding on the Resilience Assessment Methodologies resource, and insights on what is required for successful resilience assessments of infrastructure, efforts, and strategies for collaborative engagement.


The U.S. Department of Transportation reports that maritime transportation is a vital catalyst for local, regional, and national economies. In 2020, maritime vessels accounted for 40% of U.S. international trade value, nearly 70% of trade weight, and 18% of total GDP. The challenges of hurricanes, coastal storms, riverine flooding, and drought can disrupt marine operations. These and other disruptions like the COVID-19 pandemic, trade policies, and labor negotiations shed light on the need to better understand functions of important infrastructure systems that support the MTS (e.g., communications and cyber infrastructure, electric power, roads, rail, water/wastewater, and warehousing) and the governance systems and communities that the MTS operates within. These challenges and the complicated nature of the interdependent systems that comprise the MTS are paired with an almost overwhelming number of datasets and approaches for analyzing disruptions and enhancing resilience.

The Cybersecurity and Infrastructure Security Agency (CISA) released the MTS Guide to better help federal, state, local officials and private infrastructure owners and operators understand and plan to increase the resilience of maritime infrastructure systems and functions. The MTS Guide provides a consistent, repeatable process for conducting uniform assessments of the resilience of the complicated systems that comprise the MTS. The MTS Guide provides advice for assembling the diverse group of public and private stakeholders and agencies that manage these systems; provides a framework for conducting resilience assessments; and provides a variety of resources to support resilience assessments.