Orca Subsea

Orca Subsea Limited, Established in 2015 to provide our clients with a range of support and engineering services specifically tailored to Diving and Subsea Contractors. Orca’s management team comprises in excess of 70 years cumulative Diving experience (Air Saturation, Hyperbaric welding, system manufacture, system commissioning) and Subsea Construction covering the North Sea, Middle East, Far East, Brazil, GOM and West Africa. Orca Subsea Limited operates a fully ISO 9001:2015 accredited BMS system and we are also accredited by DNV.

In 2018 Orca Subsea Established 3 divisions to better serve our customer base.



Orca Subsea - Technical Products and Services:


  • Air, Saturation and Mixed Gas Dive Support

  • Hyperbaric Welding and Underwater Intervention Technical Authority

  • Mobilisation Support Specialists

  • Technical Support Services, Engineering and Diving

  • Equipment and Tooling Rental

  • Planned Maintenance System Specialists



Orca Market Place - One Stop Shop for subsea and energy sector procurement and rental equipment. 


Orca Solutions - Home to the Orca Managment Applications (Mobilisation Manager, Equipment Manager), bespoke asset management and IMS applications tailored for the energy sector. 

Orca Divsion Websites: 

Our Team
Callum Masson, Commerical


Phone: +44 (0)1224 595206

Greig Masson, Business Development


Phone: +44 (0)1224 595206

Callum has worked in the Subsea sector in both operational and business development roles since graduating from Robert Gordons University in 2005 with an Honours Degree in Economics and later being awarded a Post Graduate Degree in Quantity Surveying.


Following commercial roles at Forum group and Technip Callum then moved onto the Commercial Management role for Mermaid Subsea based in the Middle East. Callum was responsible for all commercial activities in the western hemisphere covering Diving, Construction and Lay.

Greig has rich experience garnered from his time working within the supply chain function of some of the industries major players, namely Subsea 7, FMC Technologies and Technip. During his time at Technip Greig served as logistics lead for the Mearsk Gryphon emergency repair program undertaken by Technip which saw one of the largest movement of reels, mid water arches and specialist equipment from a number of different locations throughout the globe to Lerwick, Peterhead and Aberdeen for installation in the Mearsk Garp field. In addition, Greig has also been personally involved in over 100 mobilisations from locations as diverse as Leith, Le Trait, Singapore, UAE and West Africa.


Following the opening of Orca’s Aberdeen office in late 2016 Greig was appointed Business Development manager and has been primarily responsible for the establishment of the brokerage and technical support function within the UK.  Greig was so successful in this role Orca moved our main office from Spain to the UK to be able to offer the full Orca package to the UK market whilst still supporting our international clients. 

Mike Masson, Operations


Phone: +44 (0)1224 595206

Mike has worked in the oil & diving industry since the early 1980’s in various positions starting initially as a Dive Technician then over the years progressing through the ranks to Global Equipment Director at Mermaid Subsea Services before taking up his present position at Orca. Mike has vast experience in commercial diving operational and R&M requirements for in-built and portable SAT & Air dive systems stretching back over thirty years.


During this time he was also heavily involved with Hyperbaric Welding which included design of equipment and systems, supervising scopes of work both on and offshore. His experience in hyperbaric welding includes pipeline tie-in’s along with platform structural repairs. He also has been involved in setting up PMS systems with supporting documentation requirements at various companies for Sat, Air and Welding systems


Mike has also many years behind him of organising and supervising work-scopes for maintenance periods, dry dockings and equipment installations from conception through the various stages of a project to completion. As part of his process during any project he instils strict financial and budgetary control.

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