International Naval Surveys Bureau (or simply known as INSB Class ) is a Greek ship classification society, headquartered in Piraeus, Greece, with four decades of continued presence in the international marine industry.

As an independent technical supervisory organization, INSB Class conducts safety surveys for ships classification, statutory and management systems certification together with the applicable verification appraisals & engineering approvals

INSB Class - Main Services include:

  • Ship classification surveys for new constructions and fleet in service under INSB's own Rules & Regulations.
  • Statutory surveys and certification on behalf of Flag States based on the IMO International Conventions, Codes and National Regulations.
  • Plan appraisal and engineering studies.
  • Assessment and certification of safety management systems under the ISM/ISPS Codes and the MLC 2006 Convention.
  • Technical advisory services.
  • Surveys of damage , modification or repairs verifications.

INSB Class surveying and certification services rendered via an extended international network of exclusive offices and surveyors, are to ensure that irrespective to fleet configuration, applicable safety standards are met and maintained in line with internationally recognized safety standards and general EU criteria.


  • Piraeus Chamber of Commerce & Industry (Reg.Nr.21637).
  • Hellenic Marine Environment Protection Association (Helmepa).
  • Hellenic Institute of Marine Technology (Helint).
  • Hellenic Management Association (HMA-Reg.Nr.532).
  • Hellenic Chamber of Shipping.

Our Process

We appreciate that operating safety and reliability of your fleet are vital to your everyday marine commitments.
INSB's loyalty to operational safety is eminent as we work to identify & manage potential risks to achieve improved ship safety and compliance throughout vessels demanding lifecycle.

Our activities are supported by the expertise and resources developed over almost 4 decades in offering survey & classification services via highly trained surveyors, auditors and experts who apply their decisive experience and knowledge for improving ship safety standards and creation of sound operational reliability and endurance.

We respect tight shipping schedules and by being available 24/7 we focus on our high responsiveness and technical expertise that can make a difference to you and your classed fleet.

We are conscious for operationally sound vessels that perform best in an uninterrupted manner. Thus, we strive for vessels continued technical integrity and fleet optimization by means of regular ship survey program and technical assessments.