The idea of marine transportation electrification is 136 years old, but internal combustion engines have been ruling the markets so far due to bottlenecks associated with motor, converter, and battery technologies. In recent times, the advancement in communication, power electronic, and electrical energy storage technologies played a key role in the commercial success of battery-operated road transportation systems; which opens a doorway to the limitless research possibilities towards the electrification of marine vessels.


Author:  Prof. Jin-Woo Ahn, International Steering Committee Chair

The 24th International Conference on Electrical Machines and Systems (ICEMS) organized by KIEE, co-organized by IEEJ and CES, technically co-sponsored by IEEE IAS was held in Gyeongju, Korea from Oct. 31 to Nov. 3. More than 530 papers from 22 countries were presented. The conference was hybrid type and 141 off-lines and 390 on-lines. The topics are electric machines and field analysis, power electronics and motor drives, energy systems, e-mobility and AI convergence, and special sessions.

Abstract – The rising global warming levels and petrochemical reserve depreciation open a new gateway to the automotive industry to lead the world into a carbon-free future. The successful commercialization of battery-operated road-going vehicles stepping up the automotive industry spirits to migrate this technology to other transportation sectors. Limited by the lithium-ion battery energy density, absolute battery propulsion is not a reality for large marine vessels operating over longer distances; still, the vessels operating over short distances are suitable. This article discusses the evolution of marine propulsion technology and bottlenecks involved in the remodification/up-gradation of existing diesel engine-driven vessels for absolute battery operation. A brief functional modus operandi is described to design a new absolute battery-operated marine vessel along with the adopted tools and techniques. A short analytical discussion was presented on marine powertrain architectures about the sizing of propulsion equipment.

Maritime Industry is one industry that heavily relies on humans for decision-making, work processing, and operations. It changes traditional business practices using digital technology such as computer software, database, and web pages. The application of using Artificial Intelligence (AI) and machine learning for navigating traffic could facilitate and improve productivity.  

Maritime industries have conducted several initiatives to explore new digital technologies. Shipowners would prefer to minimize human-related activities if the financial operating cost is rational and AI can attain better productivity. AI enables the transformation to paperless and automated procedures. However, the maritime industries struggle when facing big data for analysis and implementation to enhance work productivity. One of the common issues is the lack of understanding of how AI can impact the business and the lack of cooperation and standards among partners. We will unearth the potential of AI and machine learning for maritime applications.

Abstract – In this article, the Land-Based Test Site (LBTS) project performed to verify the safety and performance of the next-generation submarine of the Republic of Korea, Jangbogo-III Batch-I, is introduced. The LBTS for Jangbogo-III Batch-I is mostly composed of the actual equipment to be mounted on the submarine. Through the LBTS project, 146 technical risks were identified and improved in advance, and the effect of the project was estimated to be more than 600 million dollars. 

Keywords—DC grid, DC microgrid, Submarine Power System, Integrated Power System, Electric Propulsion, LBTS, Land-Based Test System

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Jin-Woo Ahn


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