Marine Construction & Coastal Infrastructure
Mastering the interface between land and sea.
At Muller Holding, our marine division is defined by self-sufficiency and technical dominance. Unlike general contractors who outsource offshore work, we own and operate a specialized marine fleet, allowing us to execute complex coastal projects with total control over timeline and quality.
From constructing the Aegean Region’s largest integrated container ports to executing precision deep-sea dredging, we deliver turnkey solutions for the maritime, energy, and logistics sectors. Our expertise extends to difficult geotechnical conditions, including post-disaster port rehabilitation and earthquake retrofitting.
Our Core Capabilities
We combine heavy marine civil engineering with specialized subsea operations, supported by our fleet of 13 specialized vessels.
1. Port & Harbor Construction
We build the heavy infrastructure that global trade relies on. Our experience includes the construction of piled jetties, reinforced concrete quays, and heavy-load cargo docks.
- Key Features: Construction of deep-water jetties (up to 500m length), installation of bored piles and steel pipe piles in marine environments, and high-capacity capping beams for crane rails.
2. Breakwaters & Coastal Protection
Defending coastlines and harbors from the open ocean. We specialize in the placement of core material and armor layers using Tetrapods, Acropods, and Antifer blocks.
Key Features: Construction of main and secondary breakwaters, rock fortification, and crown wall construction.
3. Seabed Dredging & Reclamation
Creating new land and navigable channels. With a dredging capacity of 1,000 m³ per hour, we handle large-scale capital dredging projects.
- Key Features: Deepening harbor basins to -21 meters, underwater rock breaking (up to 150 MPa hardness), and land reclamation using dredged material.
- Equipment: Utilization of self-propelled split hopper barges and heavy-duty backhoe dredgers for hard-soil excavation.
4. Post-Disaster Rehabilitation & Retrofitting
Specialized engineering for damaged marine structures. We have a proven track record in repairing ports affected by seismic activity (earthquakes) and liquefaction.
- Key Features: Deep Soil Mixing (DSM) and Geo-Concrete Columns (GCC) for ground improvement, underwater dismantling of damaged quay blocks, and strengthening of existing piles
Featured Projects
These projects demonstrate our capacity to handle multi-million dollar contracts and critical national infrastructure.
1. Aegean Integrated Container Port
- Scope: Turnkey construction of the region’s largest port.
- Details: 6.2 million m³ excavation, construction of a 330m breakwater, and 440,000 m² of back-area infrastructure.
2. Star Refinery Marine Terminal
- Scope: EPC Contractor for a $226M marine terminal.
- Details: Construction of 3 major piled jetties (495m, 351m, and 332m) to handle liquid cargo tankers.
3. Industrial Port Earthquake Renovation
- Scope: Urgent rehabilitation of a major steel port following seismic damage.
- Details: Dismantling 27,000 m³ of damaged dock blocks, installing 42,000 meters of bored piles, and soil improvement against liquefaction.
The Muller Advantage: Engineered for Efficiency
Our operational model removes the risks associated with marine construction.
Owned Fleet Power: We do not rely on rental equipment. Our fleet includes 190-ton digger excavator dredger and self-propelled split hopper barges, ensuring we can mobilize instantly.
Precision Engineering: We utilize D-GPS positioning systems for underwater excavation and block placement, ensuring millimeter accuracy even when working “blind” underwater.
Subsea Hard Rock Capability: Unlike standard dredgers, our equipment can break and dredge rock with a hardness of 150 MPa, allowing us to open channels in the toughest seabeds.