ClassNK Technical Journal

ClassNK Technical Journal No.11 2025(Ⅰ)

Full Text PDF (14.4MB)

Prefatory Note

• Introduction to the Special Feature on “Latest Technological Trends for Protection of the Marine Environment” PDF 0.1MB

Special Feature Articles on “Latest Technological Trends for Protection of the Marine Environment”

• Guidelines for Underwater Noise from Ships and Trends in the IMO, Etc. PDF 1.9MB
• Development and Application of Ship Underwater Radiated Noise Estimation Tool for Preservation of the Marine Environment PDF 1.3MB
• Measurement of Ship Noise in Shallow Sea Area PDF 4.0MB
• Recent Information on the Development of IMO Guidelines for the Safety of Ships Using Ammonia as Fuel and Initiatives of ClassNK for Practical Application of Ammonia-Fueled Ships PDF 0.3MB
• Research to Develop Safety Assessment Measures of Alternative Fuel/New Cargo Transportation PDF 1.6MB
• Commentary on “Bayesian Estimation of Ammonia Leak Frequency for Risk Assessment of Ammonia-Fueled Vessels” PDF 1.1MB

Technical Topics

• Revealing a Fuel-Saving Tip for Main Engine Operation in Rough Sea Conditions PDF 2.9MB
• Introduction of Examples of the Use of AIS Data PDF 2.2MB
• Recent Topics at IMO PDF 0.2MB
• Overview of Guidelines Issued by ClassNK during CY 2024 PDF 2.8MB

ClassNK Technical Journal No.10 2024(Ⅱ)

Full Text PDF (14.4MB)

Prefatory Note

• Introduction to the Special Feature on “Latest GHG-Related Trends and NK Initiatives” PDF 0.1MB

Special Feature Articles on “ Latest GHG-Related Trends and NK Initiatives ”

• ClassNK Alternative Fuels Insight PDF 2.3MB
• IMO Guidelines on Life Cycle GHG Intensity of Marine Fuels PDF 0.8MB
• Trends in Alternative Fuel Ships and Activity of the Society PDF 1.7MB
• Trends in Development of Marine Dual Fuel Engines to Reduce GHG Emissions PDF 4.0MB

Technical Topics

• Latest Trends in Ship Cybersecurity Regulations PDF 1.8MB
• Investigation of Nonlinearity of Vertical Wave Bending Moment Based upon CFD PDF 2.8MB
• Initial Deflection Measurement of Continuous Plates in Actual Ships Using 3D Laser Scanner PDF 1.7MB
• Recent Topics at IMO PDF 0.2MB

ClassNK Technical Journal No.9 2024(Ⅰ)

Full Text PDF (5.0MB)

Prefatory Note

• Introduction to the Special Feature on “Initiatives for Vehicle Carrier Fires” PDF 0.1MB

Special Feature Articles on “Initiatives for Vehicle Carrier Fires”

• Safe Maritime Transportation of Electric Vehicles PDF 0.8MB
• High-Expansion Foam Fire-Extinguishing Systems for Pure Car and Truck Carriers PDF 1.1MB

Technical Topics

• Rational Estimation Method for Internal Pressure Due to Dry Bulk Cargo during Vertical Acceleration PDF 0.7MB
• Quality Control in the Development Process of AI System on Ships PDF 6.9MB
• Research and Development of Launch Vehicle Recovery Ship and Response to Ship Class Rules PDF 0.7MB
• Overview of Guidelines Issued by ClassNK during CY 2023 PDF 1.5MB

ClassNK Technical Journal No.8 2023(Ⅱ)

Full Text PDF (3MB)

Prefatory Note

• Introduction to the Special Feature on “Trends and Initiatives toward Reduction of GHG” PDF 0.1MB

Special Feature Articles on “Trends and Initiatives toward Reduction of GHG”

• Recent Topics on GHG Emissions Reduction from International Shipping PDF 0.5MB
• Safety Requirements for Construction and Equipment of Ships Using Methanol as Fuel PDF 0.3MB
• EEDI/EEXI Verification of Wind-Assisted Propulsion Systems PDF 5.1MB
• GHG Verification: Introduction to Supply Chain Emissions (Scope 1, 2, 3) PDF 0.5MB

Technical Topics

• Concept of Management and Application to Safety-Related Systems by RAMS PDF 1.3MB
• Next-Generation Telecommunications Infrastructure PDF 0.7MB
• Research and Development on Ship Collisions　―　Consideration of the Equivalent Added Mass Coefficient of a Struck Ship 　― PDF 1.9MB
• Recent topics at IMO PDF 0.2MB

ClassNK Technical Journal No.7 2023 (I)

Full Text PDF (4.2MB)

Prefatory Note

• Introduction to the Special Feature on “Activities for Safe Operation of Container Ships” PDF 0.1MB

Special Feature Articles on “Activities for Safe Operation of Container Ships”

• Revisions of “Guidelines for Container Stowage and Securing Arrangements (Edition 3.0)” and Future Outlook PDF 3.9MB
• Introduction of “Guidelines on Preventive Measures against Parametric Rolling” PDF 2.9MB
• Guidelines for Additional Fire-fighting Measures for Container Carriers PDF 0.6MB
• Structural Strength Rules Applied to Container Ships PDF 1.6MB
• Simplified Operational Guidance for Preventing Parametric Rolling PDF 0.6MB

Technical Topics

• Damage of SOx Scrubber Discharge Water Lines PDF 1.2MB
• Update of Wave Statistics Standards for Classification Rules PDF 2.8MB
• Studies on In-Engine Combustion of Low and Zero-Carbon Fuels PDF 3.1MB
• Recent Topics at IMO PDF 0.1MB

ClassNK Technical Journal No.6 2022 (Ⅱ)

Full Text PDF (6.3MB)

Prefatory Note

• Special Feature Articles on “Dealing with Risk” PDF 0.1MB

Special Feature Articles on Dealing with Risk

• Risk in the Maritime Sector PDF 0.1MB
• Necessity of New Framework to Support Social Implementation of Maritime Autonomous Surface Ships PDF 2.2MB
• Fundamentals and Applications for Risk-Based Design PDF 1.5MB

Technical Topics

• Development of Local Scantling Formulae for Plate Members PDF 2.0MB
• World’s First Zero Emission Battery-Propelled Tanker and Outlook for the Future PDF 1.6MB
• Introduction to “Guidelines for Additive Manufacturing (3D Printing )” PDF 6.8MB
• Estimation and Use of Wave Information for Ship Monitoring PDF 3.5MB
• Recent Topics at IMO PDF 0.3MB

ClassNK Technical Journal No.5 2022 (I)

Full Text PDF (6.0MB)

Special Feature Articles on Zero-Emission Ships

• Introduction to the Special Feature on "Zero-Emissions Ships" PDF 0.1MB
• Efforts of the Planning and Design Center for Greener Ships (GSC) PDF 2.2MB
• Development of onboard CO2 Capture System PDF 2.7MB
• Prospects for Widespread Adoption of Next-Generation Standard EV Vessel ROBOSHIP PDF 0.7MB
• ClassNK’s Efforts to Reduce GHG Emissions from Ships PDF 1.5MB

Technical Topics

• Future Fluidics Analysis and an AI Surrogate Model for Manufacturing PDF 7.6MB
• Part C "Guidelines for the Safety of Ships Using Ammonia as Fuel" of Guidelines for Ships Using Alternative Fuels PDF 1.1MB
• Overview of Changes and Comprehensive Revision of Part C of the Rules for the Survey and Construction of Steel Ships PDF 1.5MB
• Setting Corrosion Additions Based on Latest Thickness Measurement Data PDF 1.2MB
• Evaluation of the Ship Operational Effect Based on Actually Encountered Sea States by Ships PDF 0.8MB
• CBM Life Cycle Maintenance PDF 1.3MB
• Recent Topics at IMO PDF 0.3MB

ClassNK Technical Journal No.4 2021 (Ⅱ)

Full Text PDF (4.6MB)

Special Feature Articles on Autonomous Operation

• Current Status and Future Outlook of Automated Driving PDF 7.4MB
• Risk Assessment of Autonomous Ship Systems PDF 5.5MB
• Development of Comprehensive Simulation System
  for Autonomous Ships PDF 5.7MB
• Automation Levels of Automated/Autonomous Ships PDF 6.4MB

Technical Topics

• Initiatives for Ship Fire Safety Measures PDF 8.6MB
• Estimation of Stress on Ship Structures Using Full-Scale
  Measurement Data and Machine Learning PDF 5.0MB
• Consideration of Utilization of Autonomous Drone for
  Ship Surveys/Inspections PDF 1.1MB
• Recent Topics at IMO PDF 3.3MB

ClassNK Technical Journal No.3 2021 (I)

Full Text PDF (9.8MB)

Special Feature Articles on Autonomous Ships

• Recent Trends and Issues for Practical Application of MASS PDF 0.6MB
• Research and Development of Collision Risk Decision Method
  for Safe Navigation and Its Verification PDF 1.7MB
• Development of AI-based Automatic Collision Avoidance System
  and Evaluation by Actual Ship Experiment PDF 1.8MB
• Challenge of Technology Development through MEGURI 2040 PDF 1.1MB
• Development of Automated Ship Operation Technologies PDF 0.9MB
• Development of Maneuvering System
  for Realizing Autonomous Ships PDF 2.1MB
• Safety Evaluation for Technologies
  Related to Autonomous Ships PDF 1.5MB

Technical Topics

• Development of Simplified Formula of Froude-Krylov Force of 6-DOFs
  Acting on Monohull Ship PDF 2.6MB
• Development of Closed Formula of Wave Load Based Upon
  Long-Term Prediction PDF 1.1MB
• Climate Change Initiatives for Reduction of Greenhouse Gases PDF 0.9MB
• Efforts Related to “Innovation Endorsement” PDF 5.4MB
• Recent topics at IMO PDF 0.2MB