Tis 7 dec / År 39 / Nr 4 2021

First choice in high-resolution marine surveys

Who knows what dwells far beyond what we can see? On the seabed at the bottom of the ocean, for example? Ask a reliable source, like MMT, experts in high-resolution marine surveys.

When it comes to marine mapping and surveying, Gothenburg-based MMT is not only one of the pioneers but also one of the most dependable in the field. Possibly one of the world’s leading companies offering assured surveys in bathymetric, geophysical and geotechnical services. MMT specialises in oil and gas, hydrography and renewable energy and marine cable sectors.

Why is the seabed interesting?
The major part of the world’s seabed is unmapped and for any explorer to map the unknown and complete the puzzle is a true challenge. On a day-to-day basis, what are the core activities of MMT? “We offer complete survey and analysis of the seabed, including environmental investigations and mapping of biodiversity. Using the latest sonar technology, still-video cameras and underwater vehicles, we are able to scan everything on the seabed surface – even below the seabed using special equipment”, MMT CCO Nils Ingvarsson explains.
But why do we want to know what the seabed looks like and how it behaves? “Our results
are usually presented to decision makers and engineers who can then make a fact-based assessment of the area’s suitability for marine infrastructure projects, such as power transmission or oil and gas fields with connecting pipelines for example”, Nils clarifies.

Understanding what is hidden
The world is moving faster. New power cables are drawn, ocean wind farms are being built and, consequently, the need to map the properties of the seabed is increasing. MMT operates via its own vessels across Europe and the world.
In any new marine infrastructure or power project, it is essential to get to know and truly understand the environment before making any assumptions. We ask Nils Ingvarson, having decades of experience in the field; what is most necessary to know before installing something on the seabed? “Detailed water depths, seabed characterisation, unexpected finds such as UXO (Unexploded ordinance), chemicals, wrecks or other waste and not least the seabed’s geology. Understanding what is hidden underneath it all is crucial”.
Seabed characterisation, unexpected finds and understanding the geology – all are of great importance when choosing the right place for power cable routing linking nations or windfarms to shore. The same applies to customers in the oil industry who want to draw pipelines between nations or from field to shore, and for companies that intend to construct bottom-anchored wind or wave power plants.

How is it possible?
Understanding the seabed, how is it possible? “We use highly advanced equipment to navigate, survey and visualise the seabed. An increasingly common technique is investigations using a so called Remote Operated Vehicle (ROV), which is an underwater vessel that enables inspections and very far-reaching surveys at sea. It is especially useful – and in some cases vital – in areas that can pose a risk to people, such as dumping zones for chemical waste or in close vicinity to pipelines for instance”.
What makes MMT the first choice in marine surveying? “Our employees are dedicated specialists in marine surveying, positioning, marine geology, marine biology, technology and shipping, and our overall expertise is a huge competitive advantage for us. Our unique knowledge, long experience and the desire to constantly deliver the best possible measurement results mean that we can compete on the world market”, says Nils Ingvarson.