ClassNK

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An introduction to risk assessment based upon ClassNK’s findings obtained after implementation of the IMO’s ”Formal Safety Assessment (FSA)” risk assessment technique for ships and maritime affairs as well as studies related to risk assessment methods. Provides numerous examples of the practical application of the FSA and sumarizes all revisions made to the FSA since their establishment.

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The Society shall carry out technical services in accordance with these regulations.

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This pocket checklist is prepared for being used by the vessel’s crew prior to arrival into port, as a result of statistical analysis and investigation of the deficiencies pointed out by the Port State Control officers on ships classed by NK, in order to minimize the risk of the ship being detained.

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Guidelines on Shipboard Wireless LAN System (Spanish) (Nov. 2011) is to inform technical requirements, rules & standards, implementation of installation.

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Guidelines on Shipboard Wireless LAN Systems (Portuguese) (Nov. 2011) is to inform technical requirements, rules & standards, implementation of installation.

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Guidelines on Shipboard Wireless LAN System (Korean) (Nov. 2011) is to inform technical requirements, rules & standards, implementation of installation.

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Guidelines on Shipboard Wireless LAN Systems (Chinese) (Nov. 2011) is to inform technical requirements, rules & standards, implementation of installation.

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This guideline summarizes the requirements for the application of non-destructive testing using phased array ultrasonic testing.

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Guidelines serve as a reference for ships intending to navigate Russian territorial waters of the Arctic Ocean. Guidelines provide information on the requiremts placed on such ships by the Russian Government, necessary procedures, and design specification standards applicable to ships operating in low temperature and sea ice areas, etc.

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This Guidelines summarize the specific requirements for Naval and Government ships which are deemed necessary by ClassNK in respect of survey, construction, installation, material, equipment and machinery, etc.

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Hydrogen is seen as one of the most prospective sources given its environmental merit, and transport in form of liquefied hydrogen (LH2 technology) is under development as for the transportation of hydrogen. Furthermore, INTERIM RECOMMENDATIONS FOR CARRIAGE OF LIQUEFIED HYDROGEN IN BULK as IMO Resolution MSC.420(97) is approved, adopted and produced at MSC97 (Maritime Safety Committee, 97th session).
These guidelines provide comprehensive requirements for the design and construction of liquefied hydrogen carriers by making the above interim recommendations re-structured and more usable and partly supplementing them.
It is believed that required safety of liquefied hydrogen carriers can be secured if designed and constructed in accordance with the prescriptive requirements of the guidelines as well as taking additional measures as necessary that may be imposed by the results of the risk assessment required for individual project by the guidelines.

(Summary)
The assessment procedures for hull structural strength for liquefied gas carrier with independent spherical tanks of type B, which is commonly called MOSS type LNG carrier, are specified in the Guidelines.
The Guidelines consisit of the guidelines for direct strength analysis, in which yield strength assessment and buckling strength assessment are specified, and the guidelines for fatigue strength asessment.

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The Guidelines were developed to lay out specific technical requirements for floating offshore facilities for LNG/LPG production, storage and offloading (LNG/LPG FPSOs) as well as floating offshore facilities for LNG storage and regasification (LNG FSRUs). The fourth edition of the guidelines has been released reflecting the changes made to Part N of the Rules for the Survey and Construction of Steel Ships, which is based upon IMO IGC Code.

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As the amount and size of recent container carriers increase, it has become increasingly important to evaluate the adequacy of container stowage and securing arrangements. These guidelines describe the strength evaluation methods for safer container stowage and securing arrangements.

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The guidelines consist of safety requirements applicable to CNG (Compressed Natural Gas) carriers based on the IGC Code (International code for the construction and equipment of ships carrying liquefied gases in bulk) as well as additional requirements taking specific hazards arising from the handling of CNG into consideration.

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This guidance gives the point on the survey items and the related requirements as well as on the necessary preparations to be made for surveys including documentation. This guidance also helps the survey applicants who are ship owners or their representative to arrange the surveys expeditiously and economically as scheduled.

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The material provide checklist of statutory requirements in order to improve maintenance of ships.
Checklists for PSC inspection including common deficiencies and ISM code, ISPS code and MLC, 2006 are also provided.

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This Annual Report provides statistics related to PSC detentions of ships registered to ClassNK. This report is prepared with the objective of building awareness with the present state of PSC and thereby helping to improve onboard maintenance and inspections as well as Safety Management System.

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Various topical articles detailing the recent activities of ClassNK and industry partners.

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Various topical articles detailing the recent activities of ClassNK and industry partners.

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This report introduces the Society’s activities during 2019.

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While the industry strives for innovative R&D and technological development that goes beyond the traditional business framework, “ClassNK Technical Journal” is launched to strengthen comprehensively spreading technical expertise of the society, which supersedes previously published “ClassNK Technical Bulletin”.

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Outline of Liquified Gas Carrier including the Requirement of the Code, Construction, Arrangement, Equipment, etc

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Maintenance Guidance for Lumber Carriers

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This guideline, which conform to ClassNK rules, provide a comprehensive summary of the requirements for welding procedure specification certification and welding procedure qualification tests, including relevant precautionary measures for the welding of duplex stainless steels.

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A disaster happened in a nuclear power plant in Japan in August 2004, which was caused by failure of condensation water pipe in the secondary line. Shipping industries are concerned for possibility of occurrence of such a disaster in ships due to its construction similarity to marine boiler plant in steam, feed water, and condensation piping for main or auxiliary boilers. Nippon Kaiji Kyokai has therefore investigated and showed the result that similar corrosion failure as in the nuclear power plant has occurred in shipboard steam/feed water/condensation water pipes for main and auxiliary boiler plants without causing severe consequences. It is also found that this kind of failure, named “Flow Accelerated Corrosion” and referred to as “FAC”, is caused by erosion-corrosion at a place where the flow is extremely turbulent, such as a location right downstream side of an orifice or a control valve, or at bend parts including elbows, etc., under strong influence of temperature, flow velocity or pH of the fluid. Additionally the result of wall thickness measurements on actual pipe lines of some ships show a very definite evidence of a reduction in wall thickness of carbon steel piping. It was confirmed that the amount of actual reduction in wall thickness could be well predicted by Kastner Equation. Nippon Kaiji Kyokai summarized these evidences with treatment after found wall thickness reduction of pipes referring ASME code case N-597-2 as a ClassNK gaidelines.

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This guideline explains ”the rule in which the structure of a dual fuel diesel organization and application are possible.”

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ClassNK has just released the English edition of Version II of its previously well-received Guidance for Measures to Cope with Degraded Marine Fuels: Taking into Account the Poor Combustibility of Fuels this November. While the first 1996 edition (Ver. I) focused on preventing increases in major damages attributable to fuel oil, the 2008 edition (Ver. II) takes a close look at what can be done to prevent FO problems that can arise from poor combustibility. [Digest Version]

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These guidelines explains the Finnish-Swedish Ice Class Rules (FSICR) 2010 developed to apply to ships intended for navigation in the ice-infested waters of the Northern Baltic Sea, and also summarizes the specific requirements and techniques deemed necessary by the Society to satisfy FSICR 2010.

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The purpose of this booklet is, therefore, to provide ship crew members on board going to bunker and actually use compliant fuel oils with information focusing on the ”compatibility” and ”cold flow properties” of such fuels as well as the risks associated with such fuels and the measures to be taken to mitigate such risks.

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Introduction of transfer of certification for ISM / ISPS / MLC in English.

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Introduction of main features, merits, and main functions of PrimeShip-NAPA Manager

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A brochure to introduce the 20 PrimeShip Software programs and services developed by NK, English Version.

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Introduction of main features, merits, and main functions of PrimeShip IPCA Version 5

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Introduction of ClassNK’s total management certification service - PrimeManagement.

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Partnership and growth
(Promotional supplement in association with Ship & Offshore on ClassNK R&D activities)

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Introduction to ClassNK’s Support for Offshore Support Vessels & Work Boats, Portuguese Version.

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Introduction to ClassNK’s Support for Offshore Support Vessels & Work Boats.

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A brochure to introduce the ClassNK’s on-line ship information service and on-line survey & audit application system, English Version.

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Introduction to NK-PASS (Digital Drawing Approval System)

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Introduction to NK-PASS (Digital Drawing Approval System)

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Introduction to NK-PASS (Digital Drawing Approval System)

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An Introduction to the Council Directive on Marine
Equipment, MED.

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An introduction to ClassNK

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An introduction of ClassNK’s recent activities in Eco-Ship Technology including various GHG emission reduction projects and energy efficiency projects.

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Introduction to the Outline of Ship Recycling Convention & NK’s Service for it.

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A brochure to introduce the ClassNK Archive Center

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A brochure to introduce class entry for existing ships.

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A brochure to introduce class entry for existing ships.

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A brochure to introduce class entry for existing ships.

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A brochure to introduce class entry for existing ships.

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A brochure to introduce class entry for existing ships.

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A brochure to introduce class entry for existing ships.

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A brochure to introduce class entry for existing ships.

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A brochure to introduce class entry for existing ships.

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A brochure to introduce class entry for existing ships.

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Introduction of Chemical Tanker