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 Construction Division encompasses the following areas of work:
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, wreck removal, preparation of caisson beds and caisson placement.
Subtech has extensive experience in the design, installation, maintenance and repair of submarine pipelines of all sizes and materials including HDPE, GRP and steel pipelines. This experience includes various methods of installation, cathodic protection and repair.
As an example, Subtech has successfully completed an HDPE pipeline welding repair at sea by developing purpose built equipment to provide a static welding platform on top of an anchored barge.
Subtech's Construction Division has been involved in most fibre optic cable installations in Sub-Saharan Africa over the past 10 years. During this time, the company has successfully completed inter alia, direct shore end landings, separate shore ends, cable burial and repair.
Our floating cranes have been used for a variety of applications where land based cranes are restricted. Subtech designed and built purpose made equipment to place 70T concrete beams in the construction of a chemical berth in Richards Bay where space was limited.
We have performed wreck removals and demolished structures such as the old sub-aqueous Tunnel in the Port of Durban, where each segment removed weighed approximately 200T.
Subtech's survey department owns a variety of high quality equipment including a Reson 8125 Multi-beam Sonar, Sidescan, Cesium Vapour Magnetometer, Trimble GPS and Gyro with RTK Base Station. All equipment is portable and a generic mounting system has been designed to accommodate most boats. Subtech offers the following services: marine geophysical surveys, Hydrographic and Bathymetric surveys and marine geotechnical investigations.
Integral to our construction capacity is our in-house engineering and fabrication facility. Subtech is uniquely geared to conceptualise, design and develop methods and equipment to deliver solutions to meet even the most challenging customer requirements. We harness the collective efforts of our experienced marine personnel and in-house design capabilities, to develop customised solutions in collaboration with our clients.
Our resources include the following:
-
Tugs and barges
-
Cranes and Derricks
-
Specialist lifting and rigging systems
-
Winches and mooring systems
-
Cable laying equipment and burial tools
-
Specialist dredging tools
Please refer to our "Past projects" page to view our portfolio of completed projects.
Please refer to our "Plant & Equipment" page to download the spec sheets of our marine vessels and equipment currently available.
