Subtech is one of South Africa’s premier operators in marine construction and support services. We specialise in challenging projects and pride ourselves in our ability to innovate and engineer solutions to the most complex marine problems. Subtech’s Projects Division encompasses the following areas of work:

Marine Civils

Our engineering and construction teams have collectively been involved in most of the port construction that has taken place in Southern Africa since 1995. Subtech offers a full range of marine construction services including marine piling support, scour protection, confined dredging and capital dredging support, underwater demolitions, underwater concreting, preparation of caisson beds and caisson placement.

Our assets consist of tugs and barges, cranes and derricks, specialist lifting and rigging systems, winches and mooring systems, and dredging tools. Please visit our website for detailed spec sheets of all assets and our resumé of past projects.

Submarine Pipeline Installation and Maintenance

Subtech has been a crucial partner to the subsea cable industry, having successfully completed the direct shore end landings and shallow water cable burials for most of the new installations and repairs in Sub-Saharan Africa over the past decade.

We have the ability to provide turnkey solutions as well as customised cable related packages tailored for clients in Sub-Saharan Africa. Ths includes the capacity to provide solutions for installation, inspections, post lay burial and repairs in shallow water.

Desktop Studies / Cable Route Studies
We offer comprehensive Feasibility Studies for Submarine Cable Systems.

Environmental / Permitting
Our environmental consultants are able to provide complete environmental compliance services for:

• Environmental Impact Assessment;
• Environmental Management Programs;
• Supply of Environmental Control Officer; and
• Any required environmental authorisations or permits.

Survey & Route Engineering
Our standard marine surveys include accurate surface positioning, multi beam bathymetry, single beam bathymetry, side scan sonar, sub- bottom profiling and a variety of ground truthing methodologies. Standard magnetometer options are available to positively identify cable crossings and other metallic marine debris. As part of our Survey Work we offer Cable Route Engineering utilising industry standard Makai Plan software.

Marine Support

As a result of our extensive range of marine assets, Subtech is able to provide flexible yet professional marine support services to the offshore industry throughout Sub-Saharan Africa.

Our marine services include:
• Anti-piracy security detail
• Fendering / fender support
• Offshore support
• Mooring support
• STS transfer support