ROSON-1D with 70 kN pushing force
Since 1982, ROSON has been recognized as the global standard for offshore Cone Penetration Testing (CPT). The ROSON-1D is a compact and reliable CPT system designed for geotechnical soil investigation on the seabed. With a maximum pushing force of 70 kN, it is suitable for both nearshore and offshore applications. Its smart, modular design and ease of operation allow the ROSON-1D to be deployed from a wide range of vessel types, without requiring any vessel modifications.
ROSON-1D: a compact and versatile CPT system
The ROSON-1D is designed for seabed surveys at water depths of up to 1,500 meters. The system can be deployed from a vessel using an A-frame, crane, or moonpool. Its Single Drive system pushes the CPT rod string into the seabed using two electrically driven wheels, enabling reliable measurements at penetration depths of up to 20 meters below the seabed.
Nearshore application for water depths up to 500 m
For projects at water depths of up to approximately 500 meters, the ROSON-1D provides an efficient and reliable solution for nearshore CPT applications. In these situations, a simplified system configuration is often sufficient, and the use of a self-tensioning winch is typically not required.
In both nearshore and offshore environments with relatively shallow water depths, the measuring cable can be routed directly from the cone to the vessel deck. This allows direct connection to the Icontrol system, eliminating the need for a cable reel in the mast and further simplifying system operation
Easy operation and smart data acquisition
The ROSON-1D is fully compatible with the digital Icone data acquisition system and supports all commonly used cone sizes (5 cm², 10 cm², and 15 cm²). In addition, the system accommodates click-on modules for Seismic, Vane, Conductivity, and Magneto testing, enabling flexible and efficient offshore CPT operations.
Compact and versatile Why the ROSON-1D?
- Compact design and quick to deploy.
- Accurate data output via the Icone data acquisition system.
- Proven reliability with more than 40 years of operational track record.
- Easily accessible frame for efficient operation and maintenance.
- Robust, low-maintenance construction with minimal wear and tear.
- Suitable for deployment from a wide range of vessels, including vessels of opportunity.
Specifications ROSON-1D
| Feature | ROSON-1D |
| Dimensions (LxWxH) | 2,3 x 2,3 x 2,42 m |
| Max. pushing force | 70 kN |
| Surface pressure | 14 – 20.5 kPa |
| Weight (excl. ballast) | 5.800 kg |
| Dimensions winch* (LxWxH) | 2,4 x 2,0 x 2,18 m |
| * only for the offshore version, up to 1500 m water depth. |
Standard delivery
The ROSON-1D comes standard with:
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Lifting frame
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Sheave block
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Umbilical
- Control box
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Winch (not supplied with the nearshore version – up to 500 m water depth)
Optional equipment
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Guiding mast, available in lengths of 3.4, 6 and 10 m.
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Ballast (2 x 2 m)
ROSON-1D in the spotlight
Which ROSON solution best fits your project?
In addition to the ROSON-1D, A.P. van den Berg also offers variants for heavier-duty applications:
| Model | Max. pushing force | Application |
| ROSON-1D | 70 kN | Nearshore 500 m Offshore 1500 m |
| ROSON-2D | 140 kN | Nearshore 500 m Offshore 1500 m Deep Water 4000 m |
| ROSON-3D | 200 kN | Nearshore 500 m Offshore 1500 m Deep Water 4000 m |
The ROSON-2D and ROSON-3D are optionally available with innovative SingleTwist (ST) technology, providing enhanced safety and efficiency during Cone Penetration Testing.
Related CPT systems
Curious to know whether the ROSON-1D is suitable for your project? Contact us for personal advice or explore our other CPT systems, including the ROSON-ST and the WISON-APB wireline system.
Are you looking for a reliable CPT system?
We offer innovative solutions for onshore, nearshore and offshore projects. Our team of experts will be happy to advise you on the best choice for your situation. Schedule a no-obligation consultation and discover how our CPT systems can take your project to the next level. Contact us today!
