ClassNK

ClassNK

Nippon Kaiji Kyokai, also known by it s brand name ClassNK, is a non-profit, non-governmental organization ship classification society. ClassNK is one of the seven founding members of the International Association of Classification Societies, otherwise known as IACS. Derived from Wikipedia licensed CC-BY-SA.

Open Access statistics for ClassNK, Japan, covering academic research published from 2000 to 2025. Read More.


Open Access Percentage

54%


Total
Publications

413


Total Open
Publications

222


Total
Citations

4K


Open Access
Percentage

54%


Total
Publications

413


Total Open
Publications

222


Total
Citations

4K

Wikipedia

Website

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Breakdown

42% 11% 1% 46%

Publisher Open

42%

Both

11%

Other Platform Open

1%

Closed

46%

Percentage of Open Access over time

0%10%20%30%40%50%60%70%80%90%100%
20002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025

Publisher Open

Both

Other Platform Open

Closed

Volume of Open Access over time

05101520253035Total Publications
20002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025

Open

Closed

Publisher Open

20%OA Journal

OA Journal 20%

44

Hybrid 32%

69

No Guarantees 48%

104

Other Platform Open

Institution 86%

43

Domain 32%

16

Other Internet 20%

10

Preprint 2%

1

Public 2%

1

Other Platform Locations

Name

Platform Type

Publications

doaj.org OAI-PMH Repository
Institution
32
PubMed Central
Domain
16
DOI
Other Internet
8
National Institute of Informatics
Institution
5
Technical University of Denmark
Institution
4
Office of Scientific and Technical Information
Institution
4
University of Oslo
Institution
3
Europe PMC
Domain
3
Unknown Repository
Other Internet
2
Universitat Politècnica de Catalunya
Institution
2
1 / 3

Data updated 12 August 2026

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