CIVIL ENGINEERING SERVICRE

Wottnig Group plans, manages, and executes specialized marine civil engineering projects

We provide structural rehabilitation, coastal erosion control, and berth access solutions for energy and maritime operators.

Integrated Marine Engineering & Infrastructure Management

Leveraging an agile project management framework and strong technical partnerships, we deliver end-to-end marine infrastructure support, from jetty structural rehabilitation and erosion control to waterway clearing and site preparation.

HSE And Compliance

Bound by strict regulatory compliance (NIMASA, NUPRC) and uncompromising HSE standards, Wottnig Group ensures every project is completed safely, on schedule, and built to withstand harsh marine environments.

10 years in business. 20+ marine projects managed and completed. 100 percent hSE compliant.

Our Services

Shoreline And Coastal Protection

We engineer durable coastal defense systems designed to mitigate marine erosion, stabilize coastlines, and protect waterfront assets from continuous wave action and tidal currents.

Steel Sheet Piling: Interlocking retaining walls for seawall construction and bank stabilization.

Riprap Wave Attenuation: Heavy stone armoring to dissipate wave energy and prevent shoreline loss.

Gabion Baskets & Geotextiles: Flexible, permeable structures lined with geotextile layers for soil retention.

Seawall Erosion Prevention: Custom structural barriers built to safeguard coastal depots and port land..

Jetty, Dock And Berthing Infrastructure

Our team executes comprehensive structural repairs and maintenance packages for marine berthing facilities

Structural Pile Jacket Repairs: Encasement and reinforcement of corroded steel and concrete piles.

Concrete Deck Slab Restoration: Structural concrete repairs, crack injection, and deck resurfacing.

Mooring Bollard Load Testing: Inspection, installation, and certified stress testing of berthing bollards.

Fender System Installations: Marine rubber fendering fitting to protect docks and berthing vessels from impact.

Underwater And Waterway Access Support

We deliver specialized marine access support to clear channels, maintain draft depths, and protect subsea structures.

Maintenance Dredging: Excavation of accumulated silt and sediment to ensure clear vessel navigation.

Bathymetric Surveys: High-precision seabed mapping and depth profiling before and after dredging.

Channel Silt Clearance: Continuous clearance of access channels and berth pockets for uninterrupted vessel flow.

Seabed Scour Protection: Placement of protective rock armoring and mats around platform legs and pipelines.

Coastal Staging And Storage Support

We construct heavy-duty onshore support infrastructure required for energy facilities, fuel depots, and offshore staging yards operating along coastal corridors.

Laydown Yard Soil Stabilization: Ground improvement and compaction for holding heavy offshore equipment.

Bund Wall Casting for Tank Farms: Reinforced concrete containment walls engineered to satisfy environmental spill standards.

Reinforced Concrete Slab Construction: High-capacity foundation slabs designed for extreme static and dynamic loads.

Heavy-Duty Paving: Industrial surface treatments built to withstand heavy crane movements and tubular storage.

Trusted By Leading Energy And Maritime Operators

With Long-Standing Industry Relationships

Featured Offshore Infrastructure Projects

Port Harcourt Shoreline Stabilization

Engineered durable steel sheet piling and heavy riprap armoring to halt marine erosion along critical coastal port land.

Bonny Island Jetty Structural Overhaul

Executing structural pile jacket repairs and concrete deck slab restoration to extend the operational lifespan of marine berthing facilities.

Onne Channel Maintenance Dredging

Performing high-precision bathymetric surveys and maintenance dredging to maintain operational draft depths for uninterrupted vessel navigation.

Escravos Tank Farm Containment Expansion

Casting reinforced concrete bund walls and heavy-duty foundation slabs engineered to satisfy rigorous environmental spill standards.

Lagos Terminal Fender Upgrade

Installing marine rubber fendering systems and certified mooring bollard load testing to safeguard docks and berthing vessels from severe impact.

Brass Island Laydown Yard Ground Improvement

Executing soil stabilization and heavy-duty industrial paving built to withstand continuous crane movements and offshore equipment storage.

WOTTNIG has always been an important part of our companys energy procurement operations for years. I love them because they optimise everything to ensure a smooth volume procurement process

—George Odinaka, Upstream Energy Company—

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