Mitsubishi Shipbuilding Completes Conceptual Design of VLGC Enabling Conversion of Main Fuel from LPG to Ammonia

– New design will enable small-scale retrofitting when ammonia fuel goes into practical application
– Ammonia-carrying VLGCs now powered by LPG are highly suited to future use of ammonia fuel

Image of an LPG-powered VLGC convertible to ammonia fuel

The conceptual design of an LPG-powered VLGC enabling future conversion to ammonia fuel was developed based on Mitsubishi Shipbuilding’s experience and expertise in the construction and delivery of more than 80 very large LPG carriers and multi-purpose gas carriers capable of carrying ammonia. Creation of a design enabling conversion to ammonia fuel in line with future needs is expected to permit relatively small-scale ship retrofitting when use of ammonia fuel becomes a viable option.

Ammonia is expected to come into wide use in the future as a stable and clean source of energy. Because it emits no CO2 when combusted, ammonia is garnering attention as a fuel that will contribute significantly to reducing greenhouse gas (GHG) emissions in the marine industry. Mitsubishi Shipbuilding’s newest VLGCs, in addition to using LPG fuel as an alternative to the conventionally prevalent heavy oil, can also transport ammonia as cargo. As such, the company’s VLGCs are highly suited to using ammonia fuel in the future. In recent years Mitsubishi Shipbuilding has been conducting investigations into the potential use of ammonia fuel in VLGCs as one means of achieving carbon neutrality in the global marine industry by 2050, a target pursued jointly by the public and private sectors in a quest to reduce the industry’s GHG emissions.

As part of the energy transition strategy being promoted by MHI Group, Mitsubishi Shipbuilding has established a growth strategy called “MARINE FUTURE STREAM.” The strategy focuses on two overarching targets: “decarbonization of the maritime economy” through use of renewable energies and carbon recycling, and “safe and secure future for society” through autonomous operation and electrification. The company seeks to achieve these dual goals through creation and application of marine-related innovations. Going forward, as a marine systems integrator Mitsubishi Shipbuilding will continue to promote decarbonization in the marine industry and devote its resources to achieving carbon neutrality, as its way of contributing to reducing environmental loads on a global scale.

(1) This goal conforms with ClassNK’s “Guidelines for Ships Using Alternative Fuels,” which stipulate measures for safety requirements of alternative fuels.
(2) Approval in Principle (AIP) indicates that a certification body has reviewed the basic design of an item and confirmed that it meets technical requirements and relevant safety standards. Inspection of Mitsubishi Shipbuilding’s conceptual design was conducted based on the IGC Code (International Code for the Construction and Equipment of Ships Carrying Liquefied Gases in Bulk) and ClassNK’s own ship classification regulations.

About MHI Group

Mitsubishi Heavy Industries (MHI) Group is one of the world’s leading industrial groups, spanning energy, smart infrastructure, industrial machinery, aerospace and defense. MHI Group combines cutting-edge technology with deep experience to deliver innovative, integrated solutions that help to realize a carbon neutral world, improve the quality of life and ensure a safer world. For more information, please visit www.mhi.com or follow our insights and stories on spectra.mhi.com.

Topic: Press release summary

Source: Mitsubishi Heavy Industries, Ltd.

Sectors: Transport & Logistics, Energy

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