Designing RV Anna Weber–van Bosse

As NIOZ Royal Netherlands Institute for Sea Research prepares to bring its new flagship research vessel Anna Weber–van Bosse into service, attention is shifting from construction to capability. During a visit to the NIOZ research institute on Texel, the westernmost of the Dutch Wadden Islands, Hydro International spoke with Gert-Jan Reichart, head of the Ocean Systems department. He has been closely involved in the vessel’s development, from the earliest design choices through to commissioning.

NIOZ coordinates research programmes that extend from the North Sea to the open ocean. The RV Anna Weber–van Bosse was designed not simply as a replacement vessel, but as a platform intended to expand how multidisciplinary ocean research is planned, executed and shared. Rather than listing specifications, Reichart explains the ship through the opportunities it was designed to create and the new ways of working it enables.

Prioritizing working space and modularity

Every new research vessel is expected to open doors that were previously closed. For the Anna Weber–van Bosse, Reichart says, the key decision was to prioritize working space and layout rather than sheer dimensions. He points first to the enlarged aft deck. Much of its design was actually inspired by long-established practices in the offshore industry, where deck layout directly determines what can be done safely and efficiently. For NIOZ, this translated into a vessel built around modularity and containerized laboratories.

Modularity is not just a design feature but an operational philosophy, with container labs central to how the institute works. They help to streamline logistics, in particular for long expeditions or campaigns involving equipment exchanges at different ports. But Reichart explains that the new vessel takes this concept much further. Containerized laboratories are prepared onshore, fully equipped and tested, then installed as complete units. Instead of rebuilding laboratories at sea, containers can be swapped during port calls. The Anna Weber–van Bosse is configured to carry multiple layers of lab containers on deck, as well as additional units in the hold. Fixed onboard labs are intentionally compact, as most specialized work takes place in the containers. Once onboard, scientists can begin work almost right away. The result, Reichart says, is less time spent setting up and more time doing science.

Enabling parallel scientific workflows

The ship also accommodates significant larger scientific teams than its predecessor. While not every expedition will require the full capacity, Reichart stresses that the option itself is a very important one. Combined with the increased deck space, increased berthing allows research programmes to scale up when needed, instead of forcing teams to fragment their work across multiple voyages. According to Reichart, larger teams make it possible to combine disciplines and research questions within a single expedition. Instead of choosing between sediment studies, water-column observations or biological work, activities like these can now be carried out in parallel.

Given the cost and logistical complexity of ship time, this ability to integrate multiple scientific programmes within one voyage represents a substantial gain in efficiency and scientific coherence. Reichart repeatedly returns to the cost of days at sea. “Days at sea are expensive. The more scientific programmes you can combine within a single expedition, the better. This ship really adds value because it allows different disciplines to work in parallel, so that research questions no longer have to be divided across multiple voyages simply because of platform limitations,” he says.

Beyond the size alone, Reichart highlights changes in how deck operations are organized. On earlier vessels, sediment sampling and water-column work typically took place from the same side of the ship, forcing teams to work sequentially. On the Anna Weber–van Bosse, however, operations can be distributed more flexibly across the vessel. While samples are being processed in the laboratories, the ship already can reposition or prepare for the next activity. Reichart is careful to note that not everything happens simultaneously, but the overall workflow is becoming more continuous, with fewer idle periods between operations.

A first mission that is also a full system test

When Reichart talks about the ship’s first scientific mission, he consistently frames it as both research and validation. Many of the onboard systems are new to NIOZ, he notes, and the early voyages will inevitably involve testing, calibration and fine tuning under real operating conditions. The inaugural expedition will continue ongoing research into past sea-level change in the North Sea using sediment records. This is a deliberate choice, Reichart says. The region provides a familiar and well-studied environment, while still demanding the use of a wide range of sensors and sampling systems.

The mission requires the simultaneous operation of shallow-water and deep-water multibeam systems, sub-seafloor acoustic techniques and sediment coring equipment. According to Reichart, this combination will allow the vessel’s acoustic performance, sensor integration and data workflows to be exercised together, rather than in isolation. By coupling system testing with active sediment sampling, the expedition will hopefully ensure that validation does not come at the expense of scientific output.

“For us, the first expedition is not just about commissioning the ship. It is about using the ship as it is meant to be used. By combining system testing with ongoing research in the North Sea, we can evaluate the full measurement chain – from acoustic mapping to physical sampling and data integration – in real operating conditions, while at the same time producing scientific results that matter,” he comments. For Reichart, this approach reflects how the Anna Weber–van Bosse is intended to be used more broadly – not as a platform that alternates between testing and science, but as one where operational learning and scientific work progress side by side.

One vessel, multiple acoustic layers

Reichart describes the sensor configuration as a viable response to earlier compromises. Formerly, deep-water and shallow-water multibeam systems often had to be used separately. On the Anna Weber–van Bosse, both are installed on a permanent base. This allows the vessel to switch seamlessly between survey modes. For him, the addition of a dedicated shallow-water multibeam marks a qualitative step for hydrographic work in the North Sea, where earlier deep-water systems were largely unsuited to resolving fine-scale seabed features.

Multiple acoustic doppler current profilers (ADCPs) and a broadband singlebeam echosounder further extend the ship’s capabilities, supporting both physical oceanography and biological research. By placing ADCPs on the drop keel that can be lowered several metres below the hull, Reichart explains, current measurements are taken below the near-surface mixing layer, thus reducing noise and improving data quality. For hydrographic and physical oceanography applications, this offers more stable and representative current profiles.

Acoustic integration has received particular attention. Multibeam systems are mounted in a hull-integrated gondola structure designed for managing water flow and minimizing bubble interference. The bow shape was selected to reduce air entrainment, although Reichart is clear that some effects will only become fully apparent once the vessel operates in a wide range of sea states. “There are always trade-offs in this kind of design. Some effects only become visible once you are at sea and start working in different conditions. That is when you really learn how the interaction between hull shape, propulsion and sensors affects your measurements,” he acknowledges.

Data that connects sensors and samples

When the conversation turns to data, Reichart’s focus shifts from volume to meaning. “For us, data is not just numbers coming from a sensor. It becomes valuable because it is linked to physical samples and to the context in which it was collected. If you can trace a sample back to a specific location, instrument and expedition, you preserve its scientific value for many years,” he explains.

The institute operates an internal data system that links measurements, samples and metadata across expeditions. A physical sample can be traced back to the cruise, station and sensor environment in which it was collected. Reichart describes this traceability as essential for long-term scientific value. On board, the vessel functions as a local data cloud. Scientific data streams are accessible throughout the ship, including in individual cabins. Researchers can follow multibeam maps or conductivity, temperature, and depth (CTD) profiles in real time and decide when they need to be on deck.

After each expedition, data is synchronized with shore-based systems and archived for long-term use, with open access where appropriate. Reichart is candid about emerging challenges. High-resolution video from remotely operated vehicles (ROVs) and other systems generates volumes of data that cannot simply be stored indefinitely. Addressing that issue, he says, requires new approaches to data reduction, compression and automated analysis. NIOZ is actively expanding expertise in this area, including the use of tools based on artificial intelligence (AI).

Automation and safety as quiet upgrades

While much attention has been directed towards sensors and data, Reichart also highlights changes in routine deck operations. Automation has been introduced not just for the sake of efficiency, but also for safety. CTD systems are now deployed and recovered using dedicated handling arms, rather than requiring crew to manually guide heavy equipment alongside the hull.

Piston coring operations have also been transformed. The new system supports sediment cores of up to 28m, handled by a hydraulic mechanism that transfers the core directly into deployment position. Reichart describes this as a fundamental shift away from older techniques that relied on complex rigging and manual intervention. For him, the reduction of operational risk on deck is as important as any gain in efficiency.

Robotics extending reach beyond the ship

The Anna Weber–van Bosse was designed from the outset to work closely with NIOZ’s Marine Robotics activities. Large ROV systems require significant deck space and specialist teams. Reichart describes the ship as a stable and flexible base for not only ROV operations, but also autonomous underwater vessel (AUV) deployments and the use of gliders. Autonomous platforms extend the vessel’s reach even further. While the ship conducts survey work, an AUV can map additional areas in parallel.

Reichart is realistic about communication limits underwater. High-resolution datasets are usually only fully transferred once vehicles return to the deck, although gliders can transmit subsets of data when they surface. In the longer term, Reichart expects that some ROV missions will be supported by pilots working onshore, connected via modern satellite links. This would reduce the need to carry full operator teams during long transits.

DP2 to operate inside offshore wind farms

When asked about the dynamic positioning (DP2) capability, which is a bit unusual for a research vessel of this size, Reichart explains that it is primarily about being able to operate safely and effectively inside offshore wind farms. Those areas are taking up an increasingly large part of the North Sea, and at the same time they are coming with major research questions, particularly about their ecological impact. “With DP2, if one engine fails, you can still continue operating with the other. If you want to work within wind farm areas, you need that level of redundancy,” he says.

The vessel is also equipped with a battery package as part of a hybrid propulsion system. The battery can be used for peak shaving, which according to Reichart means that the engines don’t have to be run at full power all time, and also serves as a backup when something goes wrong. Because of that hybrid setup, the engines themselves can be smaller and more energy efficient, while still providing the reliability needed for dynamic positioning. “When you are holding position under DP, the forces involved are considerable. I remember seeing the bow thrusters during construction and being struck by their scale; you could literally stand inside them. That really gives you a sense of the power required,” he states.

Data for maritime engineering as well as research

Beyond scientific research, Reichart notes that the Anna Weber–van Bosse is instrumented to collect data relevant to maritime engineering. Systems are in place to monitor propulsion behaviour, energy use and underwater noise, including the ability to observe propeller performance below the waterline.

Hull form, winches with active heave compensation and overall stability were tested extensively using scale models. Predicted vessel accelerations remained within design limits across a range of sea states, although Reichart emphasizes that real-world performance will ultimately be confirmed during sea trials.

The same holds true for the vessel’s acoustic performance. For hydrographic and acoustic measurements, Reichart emphasizes underwater radiated noise remains a critical factor. That is why the acoustics will be validated through dedicated testing rather than assumed from design alone.

As a result, the ship can function as a living laboratory for the maritime sector, generating real-world operational data alongside scientific measurements. For Reichart, this reflects a broader trend toward closer integration between marine science and maritime technology development.

A robust mid-size vessel for flexible deployment

Reichart is explicit that the Anna Weber–van Bosse occupies a deliberate mid-size niche within the international research fleet. It sits between coastal research vessels and the very large global platforms operated by several European partners, a positioning that was carefully considered during the design phase. He says that the vessel is large enough to support complex, multidisciplinary expeditions, including extended campaigns with substantial scientific teams, containerized laboratories and integrated robotics operations. At the same time, the vessel is small enough to remain adaptable and cost-effective, avoiding the operational and financial overheads associated with the largest research vessels. This allows it to be deployed more flexibly and more frequently.

This balance also shapes where the ship can operate. The Anna Weber–van Bosse is equipped with a light ice class, enabling it to work at the margins of ice-covered regions, provided conditions remain within defined limits. Reichart is careful to stress that the vessel is not intended as an icebreaker, nor as a replacement for polar-class ships. Instead, it is designed to work in demanding environments where resilience is required but full icebreaking capability is neither necessary nor practical. In his view, that positioning creates a highly favourable operational niche, as the vessel is robust enough to support research in regions such as the North Sea, the Arctic margin and more distant ocean basins.

Contributing to filling global observing gaps

Looking beyond the vessel itself, Reichart places the Anna Weber–van Bosse within a broader and increasingly uncertain global observing landscape. Access to research regions, he notes, has always been influenced by geopolitics, security considerations and funding priorities.

What concerns him more is the growing pressure on long-term ocean monitoring systems. Large parts of the global observing infrastructure have historically depended on a limited number of major contributors. As some of those commitments are reduced or withdrawn, gaps inevitably emerge in sustained observation and data continuity.

Reichart argues that this makes well-equipped, flexible research vessels more important than ever. Rather than relying on a single dominant monitoring framework, ocean science increasingly depends on distributed contributions from national institutes and international partnerships. In that context, vessels such as the Anna Weber–van Bosse become more than national assets. Reichart sees them as essential nodes in a fragmented but interconnected observing system, capable of supporting targeted campaigns, filling regional gaps and contributing high-quality data to shared international datasets.

Enabling science rather than defining it

As the conversation draws to a close, Reichart returns to a theme that runs throughout his reflections on the new vessel. The Anna Weber–van Bosse, he points out, was not designed to prescribe the scientific priorities. Instead, its purpose is to enable research by giving scientists the operational freedom to pursue them. The expanded working space, modular laboratories, improved acoustic performance, integrated robotics and data systems are all means to that end.

Reichart concludes: “This ship is not meant to define the science. It is meant to remove constraints. By giving scientists more deck space, more flexibility, better data integration and the ability to combine different methods in a single expedition, it allows research questions to lead again, rather than the limitations of the platform. In that sense, the Anna Weber–van Bosse is designed to support the kind of collaborative and data-driven ocean science that is becoming increasingly important.”

The vessel’s success, Reichart argues, should therefore not be measured in terms of specifications alone, but in terms of the scientific combinations it makes possible. From sediment coring and water-column studies to autonomous mapping and long-term observation, whether in the North Sea or more distant regions, the Anna Weber–van Bosse is intended to support an ocean science community in an ever-evolving landscape.

About Gert-Jan Reichart

Prof. dr. Gert-Jan Reichart is head of ocean systems at NIOZ, the national oceanographic institute and centre of expertise in the Netherlands for the ocean, sea, and coast. His research focuses on the ocean, with a particular emphasis on the role it plays in regulating and moderating the climate.

Reichart has been closely involved in the development of the largest Dutch research vessel, the RV Anna Weber-van Bosse, for the past decade. As part of the preparations, he sat down with scientists, ship engineers, and potential crew members, and he visited shipyards together with the construction supervision team as part of the European tendering process. Everyone’s hard work has now culminated in the delivery of the new Dutch ocean-going research vessel by Armón Shipyard in Vigo, Spain.