1. American Bureau of Shipping (ABS)

• Headquarters: Houston, USA
  
• Key Standards: ABS Rules for Steel Vessels, ABS Guide for Certification of Offshore Mooring Chain
  
• Requirements:
  
• Applications: Commercial vessels, offshore platforms, and floating wind farms.
  
  

2. Lloyd’s Register (LR)

• Headquarters: London, UK
  
• Key Standards: LR Rules for the Manufacture, Testing and Certification of Materials
  
• Requirements:
  
• Applications: Merchant ships, naval vessels, and offshore structures.
  
  

3. DNV (Det Norske Veritas) – Now Part of DNV GL

• Headquarters: Oslo, Norway
  
• Key Standards: DNVGL-ST-E302 (Offshore Mooring Chain), DNV Rules for Ships
  
• Requirements:
  
• Applications: Oil & gas mooring systems, FPSOs, and large commercial ships.
  
  

4. Bureau Veritas (BV)

• Headquarters: Paris, France
  
• Key Standards: BV Rules on Materials and Welding
  
• Requirements:
  
• Applications: Cruise ships, LNG carriers, and floating wind turbines.
  
  

5. Nippon Kaiji Kyokai (ClassNK)

• Headquarters: Tokyo, Japan
  
• Key Standards: ClassNK Rules for Materials and Welding
  
• Requirements:
  
• Applications: Japanese-built vessels, bulk carriers, and containerships.
  
  

6. China Classification Society (CCS)

• Headquarters: Beijing, China
  
• Key Standards: CCS Rules for Steel Ships
  
• Requirements:
  
• Applications: Chinese shipbuilding industry, offshore oil rigs.
  
  

7. Russian Maritime Register of Shipping (RS)

• Headquarters: St. Petersburg, Russia
  
• Key Standards: RS Rules for Classification and Construction of Sea-Going Ships
  
• Requirements:
  
• Applications: Ice-class vessels, Russian offshore projects.
  
  

8. Korean Register (KR)

• Headquarters: Busan, South Korea
  
• Key Standards: KR Rules for Steel Ships
  
• Requirements:
  
• Applications: Korean-built ships, offshore support vessels.
  
  

Conclusion

Different classification societies have varying standards for marine anchor chains, but all ensure safety, durability, and performance. While ABS, DNV, and LR dominate offshore and high-strength applications, ClassNK and CCS are prominent in Asian shipbuilding. Compliance with these standards is crucial for insurance, regulatory approval, and operational safety.

For specialized applications (e.g., Arctic shipping or floating wind farms), DNV and ABS are often preferred due to their stringent offshore chain requirements.