OCTA has provided consultancy services for the following companies on few of their projects
- L&T Hydrocarbon Engineering, Mumbai
- L&T Valdel Bengaluru & Chennai
- L&T Modular Fabrication Yards at Hazira, Kattupalli & Sohar (Oman)
- L&T Chiyoda, Vadodhara
- Tata Consulting Engineers (TCE), Bengaluru
- FICHTNER Consulting Engineers (FCE), Chennai
- British Gas (India), Mumbai
- Specialist Services, Dubai, UAE
- Venture Gulf, Qatar
- 2H Offshore, UK
- McDermott, Dubai
- Petrofac, Chennai & Aberdeen
- Mustang Engineering, Mumbai & UK
- HEEREMA Marine Contractors, Netherlands & India
- Velosi Certification, Abu Dhabi
- DNV, Bengaluru
- BV India, Mumbai
- NISCONI, Indonesia
