Ammonia as Fuel - Competencies and Training

Published — February 18, 2025

Ammonia holds promise as a scalable alternative maritime fuel that can help drive shipping’s green transition. However, implementation of ammonia as a maritime fuel presents hazards such as toxicity, material incompatibility, and fire/explosion risks. Seafarers and others across the shipping industry will require new skills, competencies and training to manage the safety risks associated with ammonia as fuel.

The industry now faces challenges including:


  • Identifying the specific new competency and training requirements
  • Designing and rolling out new training
  • Ensuring that the new requirements are properly integrated with appropriate regulatory frameworks

Seafarers need knowledge of:

  • the key characteristics of ammonia, such as toxicity, flammability, explosivity, corrosion, and material incompatibility
  • a ship’s ammonia-related systems and equipment, including storage
  • ammonia’s physical and chemical properties
  • hazards and hazard controls of ammonia
  • occupational health and safety precautions and measures
  • how to respond to emergencies, such as leaks, spills, fires, and explosions
  • pollution prevention mechanisms

Seafarers will need understanding of:

  • the specific operational and maintenance regimes required by ammonia
  • fuel changeover procedures
  • how approaches to emergency response differ on board ammonia-fueled vessels
  • how processes change with increased automation
  • the legislative requirements with which they must comply

Seafarers will need new skills and proficiencies in:

  • operation and maintenance of ammonia-related equipment, including increased use of automation to enable remote operations
  • handling of ammonia storage, transfer and handling systems applicable to pressurized and refrigerated ammonia or a combination of both
  • use of new materials
  • use of new types of instrumentation and control systems
  • use of new types of detection and monitoring equipment
  • use of different personal protective equipment (PPE)

A collaborative project led by the Mærsk Mc-Kinney Møller Center for Zero Carbon Shipping and the LR Maritime Decarb Hub originated three reports that will help these industry stakeholders meet these challenges. The project has systematically identified competency and training requirements that will support the safe implementation of ammonia as a marine fuel.

This knowledge is being shared in:

  1. A detailed technical report introducing a proposed overall framework for competency and training standards: aimed at technical teams within regulatory bodies, presents a proposed overall framework for both basic and advanced seafarer training (based on the existing STCW framework).

  2. A detailed technical report on operations, maintenance and emergency response tasks: aimed at ship operators/managers and training organizations, covers detailed training/competency requirements and standards for specific tasks such as identifying and responding to an ammonia leak (goes outside the scope of current STCW regulations).

  3. A project summary report presenting a high-level view of the project’s key takeaway messages and specific calls to action for target stakeholder groups across the maritime industry: outlines the new knowledge, understanding and proficiencies that different stakeholders will need to support safe use of ammonia as a marine fuel, as well as the operational scenarios that will create a need for additional training.

Achieving safe implementation of ammonia as fuel will require action and collaboration across many different stakeholders, including regulators, shipowners/operators, and training providers. The knowledge shared in this package of reports can help these stakeholders do their part for a safe maritime green transition.

Regulators* can gain …

  • A framework for determining which minimum requirements should be formalized and how to establish a level playing field across the industry (proposed overall framework for competencies and training standards report)
  • Perspective on safety management needs when using ammonia as a fuel (operations, maintenance and emergency response tasks report)


*Including the IMO, flag states, and classification societies

Shipowners and operators can gain …

  • Help in determining the knowledge and understanding that shipboard personnel need
  • Help in determining how the shoreside organisation may need to support the vessel

Crew/ship management companies can gain …

  • Information about basic expectations for what officers and crew should know to work with ammonia as a fuel (proposed overall framework for competencies and training standards report)
  • Information about additional training the company may wish to provide to prepare seafarers for ammonia fuel use (operations, maintenance and emergency response tasks report)

Training providers can gain …

  • Comprehensive content and new approaches on which to base their training programs

Charterers can gain …

  • Information about potential regulatory obligations
  • Help with decisions regarding vessel and fuel selection
  • An overview of potential safety concerns
  • Potential assistance with language needed in contracting for ammonia-fueled vessels

Shoreside entities** can gain …

  • Information on shoreside competency and training needs regarding ammonia as a marine fuel
  • Perspective on how to work together with ammonia-fueled vessels in a safe and environmentally sensitive manner


**e.g., port authorities, terminal management operators, support organizations

Our key calls to action for stakeholders are:

  • Regulators, such as the IMO and flag administrations, must incorporate new competency and training requirements and certification programs into regulations (including but not limited to the STCW framework)
  • Shipowners and operators should identify the knowledge and training gaps in their organizations and create plans to fill these gaps
  • Training providers should understand new expectations surrounding competencies and training, plan for how to meet expanded training needs, and develop appropriate training methods and programs
  • Seafarers should understand the new challenges and training needs raised by ammonia as a marine fuel

By leveraging the knowledge and calls to action shared in these reports, the shipping industry can help realize a green transition for maritime that puts safety at the center.

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