CNS International® is dedicated to fulfil the subsea needs of the offshore energy industry.

Competence, know-how, safety, consistent performances and continuous improvement are the keywords of the operating model developed in more than 30 years of activity with the major Oil & Gas Operators and Contractors on a worldwide basis.

CNS International® is a world-wide Contractor Member of IMCA (International Marine Contractor Association) of the Diving, Remote Systems & ROV Divisions, it is a member of AISI (Associazione Imprese Subacquee Italiane), it is registered and verified by Achilles FPAL (First Point Assessment LTD).

CNS International srl Quality Management System compliance with ISO 9001:2015 and Safety Management System compliance with OHSAS 18001:2007 are both certified by DNV-GL. Furthermore, CNS International® Diving, HSE and Quality Management Systems have been audited and approved by many IOGP members and Tier 1 Contractors. Effectiveness of such systems has been demonstrated throughout the years on fields at the main markets for Offshore Oil & Gas, from West Africa to Baltic Sea, from Gulf of Mexico to Mediterranean Sea, from Persian Gulf to South-East Asia.
As a service provider, CNS International® is made up of its people.

Our team of offshore professionals, specialist engineers, business support teams and managers is committed to create a safe working environment, in which everyone is accountable for safety and constantly focusing on client needs, to provide an effective and flexible

We are presently in 5 countries, with more than 250+ people in our offshore crews from several different nationalities.

All our diving personnel are IMCA qualified and competence of offshore crew is continuously verified through the CNS International® competence assessment process, based on IMCA C003 Guidance on competence assurance and assessment: Diving Division.additional infopublications
What we do
CNS International® is a leading provider of turnkey diving services for the whole field lifecycle, in particular for subsea infrastructures installation and IMR offshore projects. Main capabilities include:
  • Saturation Diving Services
  • Surface Supplied (Air / Nitrox) Diving Services
  • Subsea / Diving System engineering
  • Consulting and Auditing services
  • Third party diving systems intervention:
    • commissioning
    • maintenance
    • classification / certification management
    • HRF management
SUONO (Safe Underwater Operations iN Oceans) is an R&D and innovation project which is being carried out by a partnership between three companies (CNS International, RANA Diving and Res Marina) and two universities (UNIVERSITA' DEGLI STUDI DI FIRENZE and SCUOLA SUPERIORE DI STUDI UNIVERSITARI E DI PERFEZIONAMENTO SANT'ANNA).

SUONO is co-financed by MIUR (Italian Ministry of Public Education) within a fund programme named "Smart Cities and Communities and Social Innovation". This project is undertaken to address the challenge of increased safety of underwater operations through industrial and academic research aimed at developing / adapting innovative robotics technologies, better working conditions, and quality of life for humans involved.