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Dredging

We provide specialized dredging services such as land reclamation, shoreline protection, stockpiling, canalization and capital dredging. Rotawn in tandem with its partner, Kariala Konsult has acquired extensive, worldwide experience in geotechnical and geophysical site investigations, surveys, studies, design, specification and supervision. The global nature of Rotawn’s activities has provided comprehensive experience of the wide variety of dredging methods, types and sizes of dredging equipment and methods used for monitoring and controlling dredging, reclamation and spoil disposal operations as well as for the determination of quantities for payment.

Shoreline Protection

Rotawn constructs and maintains shore protection structures including jetties, groins, seawalls, breakwaters, and bulkheads in order to protect the coastline and the navigable water channels that can reach down to 100 meters. Early shore protection measures included jetties and groins constructed perpendicular to the shoreline for the purpose of lessening the impacts of erosion by reducing the rate of sediment transport along vulnerable coastlines. Rotawn has invested heavily in procurement of world class next generation marine equipment for secured shoreline protection. Our clients recognize our first class professional mode of operation & safety measures applied in ensuring that we don’t end up causing erosion instead of protecting the shorelines.

Sand Stock Piling

The construction industry relies heavily on hydraulic marine sands for part of its aggregate mix in the production of concrete. Sand grain of different sizes and composition are required by builders and contractors to execute their projects. We have the capability of dredging various sand stock pile types to meet the needs of the construction industry. Strategic stockpiles have been pumped for various ventures. This service is central to our activities. The Sand stock piling activities is backed up by adequate feasibility studies and economic viability tests.

Channel Clearing

As part of our dredging services, Rotawn has also specialized in canalization with new fields of tasks which include deepening, widening and maintenance of harbors and waterways, dredging access channels, sand wave removal and reduction of canalization blockage. Canalization requires absolute precision and for this reason, our operations are carried out with high precision and the very highest standards of safety, quality and environmental care, in line with the demands of the oil and gas operators. With our fleet of equipment, we offer credible, tested and professional services

Sand Filling

As an industry leader in our chosen fields, we have gone beyond the limitations of the private sector to the public sector. We ensure that the appropriate CSD & Booster is used to optimize resources as well as meet up with client project deadline. This in turn is achieved by availability of spares and parts ranging from suction/discharge pipes to all hydraulic & mechanical arts. With our track record, we have shown that we can deliver any sand filling job, within record time

Land Reclamation

Rotawn with its partner Kariala Konsult has acquired extensive, worldwide experience in geotechnical and geophysical site investigations, surveys, studies, design, specification and supervision for:

– Coastal and port developments including land reclamation and beaches
– Maintenance of port approach and navigation channels, turning basins and berths
– Civil works such as immersed tube tunnels, pipelines and outfalls
– Minerals extraction
– Beach nourishment for the purposes of coastal defense

The global nature of Rotawn’s activities has provided comprehensive experience of the wide variety of dredging methods and types and sizes of dredging equipment. Frequently, the reclamation (or beach nourishment) works are accompanied by structures such as revetments, to stabilize them once in place. Again, Rotawn’s expertise in these areas is unparalleled.

Rotawn also has experience of the survey equipment and methods used for monitoring and controlling dredging, reclamation and spoil disposal operations as well as for the determination of quantities for payment. We utilize state-of-the art numerical modelling software, both developed in-house and commercially available software, to model the potential impacts of the dredging and reclamation works on the wider marine environment, based on a simulation of the hydrodynamic and sediment regimes in and around dredging and reclamation works

Dredging Equipment

In our plant yard, we have the following equipment but are not limited to:

Call to ask any question

+234 1 454 7716