| 2013/12/27 | ClassNK Receives Authorization from Finnish Flag | 
| ClassNK Releases Amendments to Class Rules Rules and Guidance for the Survey and Construction of Steel Ships
 | 
| 2013/12/20 | Interim Report on MOL COMFORT Casualty Released | 
| 2013/12/18 | ClassNK Issues Ship Recycling Certification to Jiangsu Changrong Steel Co. Ltd. | 
| 2013/12/12 | ClassNK Releases Guidelines for Gas Fuelled Ships Ver.2 Safety Measures for the Use of Natural Gas as Ship Fuel | 
| 2013/12/11 | ClassNK Tanker Expert Appointed Chairman of Tanker Structure Co-operative Forum | 
| 2013/12/10 | ClassNK and Rio Tinto Iron Ore Sign Collaborative Agreement | 
| 2013/12/04 | ClassNK Tops 220 Million GT | 
| 2013/12/02 | ClassNK and the "Maria Tsakos" Foundation Team Up to Support Maritime Research | 
| 2013/11/15 | ClassNK Issues Japan’s First Statement of Compliance for Ship Recycling Facility to Miyaji Salvage | 
| 2013/11/01 | "MOL COMFORT" Casualty Update (No.6) | 
| 2013/09/27 | ClassNK Signs Comprehensive Cooperation Agreement with BKI | 
| 2013/09/26 | ClassNK Issues World’s Second Statement of Compliance to Ship Recycling Facility | 
| 2013/08/30 | Release of CSR Structural Assessment Software Version 7.0.0 | 
| "MOL COMFORT" Casualty Update (No. 5) - 30 August 2013- | 
| 2013/08/14 | "MOL COMFORT" Casualty Update (No. 4) -14 August 2013- | 
| 2013/07/12 | "MOL COMFORT" Casualty Update (No. 3) -12 July 2013- | 
| 2013/07/05 | "MOL COMFORT" Casualty Update (No. 2) -5 July 2013- | 
| 2013/06/28 | "MOL COMFORT" Casualty Update (No. 1) -27 June 2013- | 
| 2013/06/27 | ClassNK Releases Progressive Speed Trial Analysis Software PrimeShip-GREEN/PSTA | 
| 2013/06/24 | Distribution of ClassNK Press Release: ClassNK Chairman and President Noboru Ueda Honored at Seatrade Asia Awards | 
| 2013/06/11 | ClassNK Commences Provision of Archive Center Services for NYK Lines and Mitsui O.S.K. Lines | 
| 2013/05/31 | Public Notification of Amendments to the Rules and Guidance | 
| 2013/05/20 | Public Notification of Amendments to the Rules and Guidance | 
| 2013/05/13 | ClassNK ReceivesSafety at Sea Award at the Seatrade Awards | 
| 2013/05/08 | Wan Hai Lines Chooses ClassNK-NAPA GREEN for New Container Vessel | 
| 2013/05/07 | ClassNK Receives Technical Innovation Award at the Seatrade Sri Lanka Awards | 
| 2013/04/30 | Evergreen Marine Earns ClassNK Certification for ISO9001:2008 | 
| ClassNK Issues First MLC Certification for Vietnamese Seafarer Recruitment Center | 
| 2013/04/26 | ClassNK Signs Authorization Agreement with the Government of Myanmar | 
| ClassNK Issues ECDIS Training Course Certification to Iino Marine Service Busan Co., Ltd. | 
| 2013/04/25 | ClassNK Releases 2013 Edition of Class Rules 
Rules and Guidance for the Survey and Construction of Steel Ships | 
| 2013/04/04 | ClassNK Releases New PrimeShip-HULL (HCSR) Design Software for Latest Version of IACS Harmonized Rules | 
| 2013/03/28 | ClassNK Earns Authorization from Romanian Flag | 
| 2013/03/27 | ClassNK Approves First Application of Lean Duplex Stainless Steel NSSC®2120 to Tankers in Japan | 
| 2013/03/12 | ClassNK Announces PrimeManagement Seminars in Ukraine and Bulgaria | 
| 2013/03/06 | ClassNK Approves Revolutionary Minimal Ballast Water VLCC Design | 
| 2013/02/13 | ClassNK Earns Authorization from German Flag Top Society Announces Further Expansion in Germany | 
| 2013/02/01 | Evergreen Seafarer Training Center Earns ClassNK Certification for Training Courses | 
| 2013/01/30 | ClassNK Registers 25 Million Gross Tons in 2012;
Sets New Records for Newbuildings & Class Transfers |