ABS grants Approval in Principle for a 15,000 TEU nuclear container ship design from South Korea, still in conceptual phase.
ABS Grants Approval in Principle for 15,000 TEU Nuclear Container Ship
The design of a 15,000 TEU capacity nuclear container ship developed in South Korea has received Approval in Principle (AiP) from the American Bureau of Shipping (ABS). The vessel is expected to operate with two small modular molten salt reactors and is designed for a service speed of 25 knots. However, the document issued is not a construction permit or full class approval; the project is still in the conceptual design phase.
The option of nuclear propulsion, which has been debated for decades in commercial maritime transport, has been brought back to the table for large container ships.
The American Bureau of Shipping, abbreviated as ABS, has granted Approval in Principle to the concept of a 15,000 TEU capacity nuclear container ship developed by the Korea Research Institute of Ships and Ocean Engineering (KRISO) and the Korea Atomic Energy Research Institute (KAERI).
Within the scope of the project, KRISO prepared the general concept design of the ship, while KAERI developed the marine-type molten salt reactor design. Samsung Heavy Industries also contributed to the high-speed vessel form, main system layout, and power control studies.
Two Reactors and Energy Storage System
In the concept, the ship's electrical and propulsion needs are expected to be met by two small modular molten salt reactors. Additionally, an energy storage system will be included on the ship to balance sudden changes in electrical demand.
The vessel is designed with a Neo-Panamax hull form suitable for the expanded Panama Canal dimensions and a service speed of 25 knots. The reactors are planned to be placed in the midsection of the ship to protect against collision and wave impacts.
The removal of traditional fuel tanks and exhaust systems aims to expand the cargo area. The location of the living quarters has also been rearranged considering radiation safety, bridge visibility, and ship layout.
Approval in Principle Does Not Mean the Ship Will Be Launched Tomorrow
The AiP granted by ABS indicates that the design does not appear to contradict the fundamental purpose of existing class rules and relevant safety principles and is considered technically developable.
According to ABS's own definition, AiP is the initial assessment of the safety and functional technical feasibility of a concept that has not yet been fully detailed. Much more comprehensive studies are required for the final design, construction supervision, testing, and full class approval.
Therefore, for the project, the following have not yet been disclosed:
Confirmed ship order,
Construction start date,
Flag state license,
Port entry permission,
Commercial operation approval.
The Main Barriers Are Legal and Port-Related, Not the Engine Room
The primary issue facing nuclear-powered merchant ships is not just fitting the reactor into the vessel. The nuclear liability regime, fuel safety, armed protection, crew training, accident response, radioactive waste management, shipyard maintenance, and acceptance by port states must all be resolved separately.
The ship's operation, which does not burn traditional bunker fuel, could significantly reduce carbon and air pollutant emissions. However, the term “zero environmental impact ship” would not be accurate. Nuclear fuel production, waste, dismantling, and potential accident risks continue to be factors in assessments.
For Turkish shipyards and shipowners, the project serves more as a beacon of direction for the energy architecture of large commercial vessels rather than a model that will immediately turn into orders. Sometimes, the future's engine room begins to take shape first in the thick file on a classification society's desk.
Source: SeaNews Türkiye




