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Research Organization
Fluids Engineering and Hull Design Department
Advanced Research Group of Ship Performance in Actual Sea


Fluid Control Research Group


Tank Testing Technical Group

Aiming at the reduction of GHG emission for dealing with the international regulation and the development of innovative hull-form design technology for realizing green innovation in shipping, this department is carrying out R&Ds such as the evaluation method of ship performance in actual seas, the energy-saving devices with high efficiency in actual seas utilizing flow contorol technology and the advanced application of CFD (Computational Fluid Dynamics).

Application of CFD to the twin-skeg vessel with podded propulsors
Tank test using a model ship

This department is also developing the fundamental technologies on experimental fluiddynamics such as the efficient measurement method of flow field around a ship hull using the optical method.

Fluids Engineering and Ship Performance Evaluation Department
Marine Dynamics Research Group


CFD Research Group


Seakeeping Performance Research Group
Self-propulsion test in high seas

These groups carry out research aimed at the assessment and improvement of the performance (propulsion, handling, seakeeping, stability etc.) of vessels at sea,and contribute to the improvement of shipping safety through technical support for investigations to determine the cause of marine accidents and for the creation of international standards.

CFD simulation of flows around a full ship moving through head sea waves.

In addition, they are also developing worldleading and highly reliable CFD softwares for ship hydrodyanmics, which are released to domestic ship yards and so on.

EEDI Project Team


EEDI reference line and reduction targets

MARPOL Annex VI which includes regulations on Energy Efficiency Design Index(EEDI) came into force in January 2013, and it requires most of new building ships to meet the reference line of EEDI. In addition, as this reference line is supposed to be lowered by 10% in a period of 10 years, maritime industry needs to take quick action for energy saving on ships. EEDI Project Team is now tackling the development of innovative technologies for ships and its application to the ships. The team will support shipbuilding and shipping industry with its technology.

Structure Engineering Department
Ship Structural Standards Research Group


Structural Analysis & Processing Research Group


Maintenance Research Technology Group
Example of whole-ship analysis of largescale
container ship by direct loading
(stress distribution)

For further evolution of ship design securing the adequate safety and economical balance, the advanced methodology for the assessment of the structural strength is demanded. Based on this background, this department is studying the advanced evaluation of wave loads, the structural analysis of a whole ship by inputting the precise wave loads, as well as research into maintenance management technologies for steel structures relating to the fatigue strength and corrosion characteristics of materials. This department is also carrying out wide-ranging research to help improving ship manufacturing techniques, including new joining technology using laser beam welding and structural adhesive, forming of the curved outer plates of the hull based on advanced data employing three-dimensional shape functions, and the application of the augmented reality (AR).

Marine Environment & Engine System Department
Power and Energy System Research and Development Group
Environment Assessment Research Group
Environmental Analysis Research Group
Environmentally-friendly Engine Research Group

This department conducts research on environment preservation concerning ships and marine structures in the following areas:
・Upgrading of simulation technologies forming the basis to realize a rational environmental regulation system for the oceans and the atmosphere; and
・Development and evaluation of various technologies to reduce emissions of CO2, NOx, SOx, PM and other pollutants from ships.
We research on the upgrading of NOx removal equipment (Selective Catalytic Reduction: SCR), on-board desulphurization technologies, control technologies for the hybrid ship power plant, and technologies for the use of alternative fuels (e.g. LNG, Light Cycle Oil (LCO)). This is because 80% reduction of NOx emission from ships will be required in the Emission Control Area (ECA) from 2016; worldwide controls on the sulphur content of the fuel oils (0.5% or less) are also scheduled to start from 2020 (or 2025); it is also necessary to develop countermeasures against global warming and safe technologies to meet the fuel shift from the heavy fuel oil to the natural gas and other fuels. In addition, we will conduct leading research introducing a new marine gas engine test bed in preparation of the predicted fuel shift in the future.

Marine Gas Engine Test Bed
Navigation & Logistics Engineering Department
Trial maneuvers carried out on a navigation risk simulator
Center for Shipping Planning Technology Research Navigation System Research Group


Logistics Research Group


These groups use steering risk simulators and computer simulators to conduct research to improve the safety of navigation systems and to upgrade logistics. They also carry out research into basic technologies such as the measuring technologies essential in research, various sensor technologies, etc.

Center for Shipping Planning Technology Research

The Center carries out researches that consider weather and sea conditions for Eco-shipping navigational plans. And optimum vessel allocation plans that adapt to transport orders. And sea and land transportation plans that take account of transportation route and costs. By developing these researches operational planning and evaluation technology it would contribute to lead to lowcarbon society and therefore safer and secure society.

Maritime Risk Assessment Department
Risk Analysis Technology Research Group


System Engineering and Safety Technology Research Group

This department conducts research on Formal Safety Assessment (FSA) for establishment of international standards which considering cost effectiveness, methodology of system reliability analysis for quality improvement/prevention for failure of ship equipment, and research for enhancement of safety in the transportation of hazardous cargos including radioactive materials through advancement of system analysis techniques including risk analysis and reliability analysis, etc.

Ocean Engineering Department
Offshore Engineering System Research Group


Deep Sea Technology Research Group

The main R&D topic of this Ocean Engineering Department is placed in offshore technological development and safety assessment for the exploitation and the production of the natural resources such as the oil, gas and minerals in the deep sea and the arctic and cold regions. Now the department mainly engages in the task to be solved including advanced technology relating to the FLNG (Floating Liquefied Natural Gas facility) and the mineral resources exploitation on the seabed.

LNG shipping simulation in Ship-to-Ship condition
Model test on safety assessment of Ship-to-Ship mooring situation
Offshore Renewable Energy Exploitation Department
Ocean Energy Research Group


Ocean Utilization Assessment Research Group
View of model test of fl oating offshore wind turbine

Progress is being made in research and development directed towards the implementation and acceleration of national projects, such as the development of basic technologies relating to power generation systems for ocean renewable energy such as offshore wind, tide and sea current power, and the preparation of design guidelines.

Marine Accident Analysis Center


The Marine Accident Analysis Center contributes to investigate causes of marine accidents by analyzing various information in a timely manner, in close collaboration with the Japan Transportation Safety Board, the Maritime Bureau and other organizations in the Ministry of Land, Infrastructure, Transport and Tourism. For severe accidents, the Center further contributes to draw uppreventive measures by reproducing situations of accidents, using the Bridge Simulator for Navigational Risk Research, the Actual Sea Model Basin and the tools for structural analysis.

Calculated roll amplitude of a ferry under large heeling condition
CG of heavy listing of a ferry
Center for International Cooperation


A NMRI member of staff (center) acts as chairman at an IMO meeting

Center for International Cooperation strives to support the development and revision of international regulation and standard managed by the International Maritime Organization (IMO) , International Organization for Standardization (ISO), and other international organization. Center for International Cooperation.