Since its establishment, GmbH has been involved in the development and survey of offshore wind farms and -cable routes.

Our customers profit of our years-long experience and our multidisciplinary team. We are capable of long-term supervision of projects. Among our services are the geological and geotechnical survey of cable routes, advice on foundation design, installation of monitoring systems on offshore wind turbines and the development of deconstruction concepts

Our staff use state of the art methods, but are equally capable of using scientific concepts to develop customized and project specific solutions. We have references for the above listed areas of expertise and would be pleased to provide them on your request.

Your requirement is not listed? Feel free to contact us. We look forward to work out a concept or an offer for you.

The overview of our services:

Survey concepts

Offshore Soil investigation

3D subsoil models

Geotechnical experts

Client Representative

Third-party inspections

Deconstruction concepts

Dynamic load testing

Driving rod tests

Condition monitoring

Structure Health Monitoring

Periodic examinations

Monitoring conzepts

Offshore Soil Investigation

Vibrocoring | Cone Penetration (CPT) | dynamic load testing


Our Vibro-Corer is ideal for the exploration of near-surface grounds (i. a. for the subsoil investigation of offshore cable routes). The Geo-Corer 3000 + 6000 is a high frequency, electrically driven vibrocoring system. It can penetrate fast into all common unconsolidated sediments, including compact sands and stiff clays. The modular construction of the Geo-Corer enables a core recovery with a length of 3 m, 6 m or 9 m. The Vibro-Corer can be deployed from a relatively small vessel, based on its modular system and lightweight structure.

Deep Sea CPT

Deep Sea CPT is performed with our high-resolution Cone-Penetration System. The Cone-Penetration Tester with pore pressure measurement (CPTu) is ideal for the near-surface exploration of e.g. offshore cable routes. Our system is equally suited on- and offshore for ground reconnaissance by means of CPTu. The Cone-Petration System operates from the seafloor during offshore operations. The tool is lifted just a few meters and stays in the water during continuous offshore surveys. The device reaches with the so-called “Dangling Operation” optimal performance times. The application of the Cone-Penetrtion System is possible within a very short time from almost every platform (truck, jack-up platform, pontoon, vessel) because of its compact construction. The powerful hydraulic drive enables a CPT-penetration depth of up to 30 m. Therefore, it is suited for a variety of exploration.

Dynamic load testing

The realization of measurements, accompanying the installation at the pile, requires an accurate implementation. An early observance throughout the planning saves costs and unpleasant surprises during the construction process. The “ GmbH” offers installation predictions for foundation elements, such as bulkheads or offshore-posts, to support your project.

We perform dynamic measurements at foundation piles as well. The measurements are executed for example as dynamic load testing. Force and deformation on the pile head is measured collateral to the dynamic probing. A measurement for a ramming impact, e. g. on-situ concrete piles, is possible too.

Pile carrying capacity can be arranged from the gained data. The deduction of an increasing factor for the pile carrying capacity is possible depending on the arrangement of the pile-tests. Our clients profit especially from our know-how, which is built on several research papers and project tasks in this field, particularly in the offshore wind sector. During the installation of dynamic probing measurements, a monitoring of the permissible voltage in the pile, according to DIN EN 12699, is possible as well.

The dynamic measurements can be realized on displacements piles, in-situ concrete, injection piles, micro piles, wooden piles, steel profiles or bulkheads. A PAX Pile Driving Analyzer from the “PDI inc.” company is used as an acquisition unit.

Your requirement is not listed? 

Ask us about it. We will be happy to create a concept or offer for you.

Structure health monitoring

Structure health monitoring for offshore wind turbines

Offshore wind turbines are exposed to a constant stress of wind and waves. Vibration, which is caused from the rotating rotor, strains the construction too. This permanent strain leads to a debilitation of the structure and hence reduces the life time of a wind turbine considerably. A structural health monitoring system (SHM) along with a continuous or cyclic evaluation of the data can identify the damage at an early stage and helps to distinguish the cause. In case of a change in the structure, the life time of a wind turbine can be extended significantly due to a timely inspection.

Our experts have long-term experience in design, installation and maintenance, data recording, server management and data analysis of SHM-systems on offshore wind farms. We offer you an entire SHM with long-term monitoring and transmission of monthly and yearly reports about the condition of your installations.


FolLowing sensors are installed by default:

Accelerometers for natural frequency analysis

Inclinometer record the incline of the wind turbine

Potential sensors measure the corrosion resistance

Position sensor monitor the grout joint between the transition piece and the foundation