Insights

Digital Innovation ClassNK is actively developing advanced digital solutions such as 3D Model-Based Approval systems and digital twin technologies, presenting opportunities to supply cutting-edge software, consulting, and integration services that support their digital transformation goals.

Sustainability Focus The company's leadership in alternative fuels like ammonia and wind-assisted propulsion highlights a strong demand for clean energy technologies, system certifications, and environmentally sustainable equipment providers to fulfill ClassNK's projects and certification needs.

Expanding Market Reach With a global footprint and consistent involvement in major maritime events, ClassNK offers avenues to present tailored regulatory compliance solutions, training, and certification services to shipowners and builders looking to meet evolving international standards.

Innovative Certification ClassNK’s pioneering approvals in emerging areas such as ammonia-fueled ships engender opportunities for testing labs, safety equipment manufacturers, and environmental technology providers to collaborate on new certification and approval processes.

Industry Collaborations Partnerships with Japanese shipbuilders and participation in pilot projects create a pathway for technical service providers, software vendors, and hardware suppliers to integrate with ClassNK’s innovative systems and expand their footprint within the maritime classification sector.

ClassNK Tech Stack

ClassNK uses 8 technology products and services including Open Graph, Cloudflare, DreamWeaver, and more. Explore ClassNK's tech stack below.

  • Open Graph
    Content Management System
  • Cloudflare
    Content Management System
  • DreamWeaver
    Editors
  • Font Awesome
    Font Scripts
  • Google Fonts API
    Font Scripts
  • Prototype
    Javascript Frameworks
  • Google Tag Manager
    Tag Management
  • ZURB Foundation
    UI Frameworks

Media & News

ClassNK's Email Address Formats

ClassNK uses at least 2 format(s):
ClassNK Email FormatsExamplePercentage
First.Last@classnk.or.jpJohn.Doe@classnk.or.jp
54%
FL@classnk.or.jpJD@classnk.or.jp
21%
Last@classnk.or.jpDoe@classnk.or.jp
13%
First-Last@classnk.or.jpJohn-Doe@classnk.or.jp
12%
Last@classnk.comDoe@classnk.com
100%

Frequently Asked Questions

Where is ClassNK's headquarters located?

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ClassNK's main headquarters is located at Kioicho, Tokio 102-8567 Japan. The company has employees across 6 continents, including AsiaEuropeNorth America.

What is ClassNK's phone number?

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You can contact ClassNK's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is ClassNK's official website and social media links?

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ClassNK's official website is classnk.com and has social profiles on LinkedIn.

What is ClassNK's SIC code NAICS code?

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ClassNK's SIC code is 7299 - Miscellaneous Personal Services, Not Elsewhere Classified NAICS code is 483 - Water Transportation.

How many employees does ClassNK have currently?

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As of May 2026, ClassNK has approximately 525 employees across 6 continents, including AsiaEuropeNorth America. Key team members include Director, Regional Manager Of North And Central America: S. L.Managing Director: N. K.Managing Director: T. K.. Explore ClassNK's employee directory with LeadIQ.

What industry does ClassNK belong to?

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ClassNK operates in the Maritime Transportation industry.

What technology does ClassNK use?

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ClassNK's tech stack includes Open GraphCloudflareDreamWeaverFont AwesomeGoogle Fonts APIPrototypeGoogle Tag ManagerZURB Foundation.

What is ClassNK's email format?

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ClassNK's email format typically follows the pattern of First.Last@classnk.or.jp. Find more ClassNK email formats with LeadIQ.

When was ClassNK founded?

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ClassNK was founded in 1899.

ClassNK

Maritime TransportationTokio, Japan501-1000 Employees

ClassNK, founded in 1899, is a ship classification society based in Tokyo, Japan, focused on safer and cleaner seas. It conducts surveys and classifications of ships and marine structures under its own rules and issues statutory certifications on behalf of more than 100 flag states. The organization also provides management-system certifications aligned with ISO and other international standards, and actively supports digitalization and decarbonization in the maritime industry.

With a global footprint through 130 exclusive surveyor offices, it offers 24/7 client support to a worldwide base of ship owners and operators. Its reach is evidenced by about 280 million gross tons on its register, representing roughly 20% of the world’s merchant fleet. A notable recent development is the world-first Approval in Principle for an ammonia-fuelled panamax bulk carrier announced at Sea Japan 2026 by ClassNK Consulting Service Co.

Section iconCompany Overview

Headquarters
Kioicho, Tokio 102-8567 Japan
Phone number
SIC Code
7299 - Miscellaneous Personal Services, Not Elsewhere Classified
NAICS Code
483 - Water Transportation
Founded
1899
Employees
501-1000

Section iconFunding & Financials

  • $500M$1B

    ClassNK's revenue is estimated to be in the range of $500M$1B

Section iconFunding & Financials

  • $500M$1B

    ClassNK's revenue is estimated to be in the range of $500M$1B

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