PREPARING YOUR MARINE SOLUTIONS
Tethys-Plantgeria marine projects collage

Engineering the Future Since 1991 in West Africa's Waters

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Years Experience
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Projects Completed
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Safety Record
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Oil Fields Served

TRUSTED BY INDUSTRY LEADERS

Oando Total Agip SPDC Exxon Daewoo NNPC raec_africa Oando Total Agip SPDC Addax Daewoo raec_africa NNPC

Featured Project Highlights

Explore our most complex marine engineering achievements through these visual case studies

Forcados Oil Field Project
2020-Present

Forcados Oil Field

Continuous diving & maintenance services since 2020

Brass Terminal Project
2025

Brass Terminal

Mellitah Libya Project
2021

Mellitah Terminal, Libya

Active Operations

Currently deployed assets and ongoing contracts

Active

Forcados & Bonny Oil Field

Since December 2020

Client:

RENASSANCE AFRICA ENERGY COMPANY

Contractor:

HYPROPS

Scope:

Diving & Marine Maintenance Services

Next inspection due: June 2024

Nigerian Water Security

Since March 2024

Client:

CRITERION NIGERIA LIMITED

Contractor:

Conqueror Tre

Scope:

Security Escort Patrol

Client Testimonials

What industry leaders say about our marine engineering services

Oando

OANDO Energy Resources

Brass Oil Field Project

"Tethys-Plantgeria's diving team demonstrated exceptional technical skills during our Brass pipeline intervention. Their ability to work under pressure in challenging tidal conditions was instrumental in completing the repairs ahead of schedule."

5/5 Rating
Total

TOTAL ENERGIES LTD

FSO Unity Inspection

"The ROV inspection of our FSO Unity mooring system was conducted with military precision. Tethys-Plantgeria's detailed reporting and analysis helped us identify potential issues before they became critical, saving significant downtime."

5/5 Rating

Project Archive

Selected completed projects from our extensive portfolio

Year ↓ Client Location Scope of Work Contractor

Ready to Discuss Your Marine Project?

Our team of marine engineers is prepared to tackle your most challenging offshore requirements