NYK Completes Concept Design for Ammonia-Ready LNG-Fueled Vessel (ARLFV).

Nippon Yusen Kabushiki Kaisha (NYK), MTI and Elomatic Oy, a Finnish maritime consultancy and engineering firm, have completed the development of a concept design for an ammonia-fuelled, LNG-fueled vessel (ARLFV) for the transition to a future naval fuel.

NYK and MTI have set a long-term goal of net-zero greenhouse gas (GHG) emissions by 2050 for NYK Group’s offshore companies. To achieve this goal, NYK Group has expanded its fleet of LNG-powered vessels in response to the Group establishing the LNG-powered vessel as a bridge solution to vessels powered by future marine fuels such as ammonia or hydrogen.

In this project, which began in September 2021, NYK Group and Elomatic began developing a concept design for an ARLFV that can be efficiently converted from an LNG fueled vessel to an ammonia fueled vessel based on the assumption that ammonia doing so will become a next-generation marine fuel.

A conceptual design considers a ship‘s specifications from an operational point of view, including factors such as cargo capacity, voyage distance, ship speed, fuel capacity, etc. When an ARLFV is ordered from a shipbuilder in the future, this conceptual design can then be used.

In phase 1 from September 2021 to the end of February 2022, the team designed an ARLFV to perform the functions of a pure car transporter and a post-Panamax bulker. The designers mainly dealt with the following problems, created the concept and identified problems that are not yet technically feasible.

  • Material of the tank to be loaded

  • Placement of additional tanks for ammonia, which has a larger volume than LNG

  • Strength and stability of hull structure by adding tanks

  • A device that supplies ammonia to the main engine

  • Confirmation of rules such as ship classification rules for safe use of ammonia fuel, etc.


ARLFV concepts

During phase 1.5, which will last through June 2022, NYK and partners will design a similar concept for a bulk carrier and a very large crude oil carrier. In addition, they will proceed to the actual construction of an ARLFV with a shipyard and ship builders in phase 2 by the end of 2022, reflecting the results achieved in the concept development, such as: B. Optimum fuel tank layout and ammonia fuel supply device and hull structural strength.


This project will be complete when the actual ship design is complete. Subsequently, NYK will propose to customers and business partners a transportation service that can easily switch from an LNG fueled vessel to an ammonia fueled vessel through the use of an ARLFV. NYK plans to offer ARLFV contracts to customers in 2023 and complete construction of the first ARLFVs in 2025.

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