Van der Leun North America, Inc.

Because every ship is unique, we make desks entirely to measure. No size is impossible for us. Of course, you can also choose the colour you like.

Because the bridge is the central spot of ships, it deserves extra attention and comforts, such as integration and accessibility of all necessary components from different suppliers. These have to be assembled and applied in various ways. As regular servicing is also important, depth-adjustable back plates make it possible to do this as efficiently and effectively as possible.

In addition to supplying your desk, we can also make sure the desk integrates smoothly with all your ship's systems.

The Van der Leun cable chains are smart adaptable systems. Based on your project specifications, we calculate the radius and load-bearing capacity and provide the ideal cable chain for you. Our cable chains have proven their value on many occasions and in various applications worldwide.

Given the great diversity of applications, each cable chain requires its own unique design. All cable chains are custom-made for each application and we import your application data using state-of-the-art 3D drawing systems.

Our cable chains are made from high-grade, robust and solid stainless steel 316 that remains intact and continues to function optimally even under the most extreme conditions and with the heaviest vibrations on, for example, heavy-rock cutter suction dredgers.

It is important to ensure that a cable chain is properly secured and that the radii of the ship or equipment-based cables and hoses are taken into account. This is at the heart of our standard procedures, based on quality and excellent workmanship. It is what makes us stand out. 

The heat exchanger - also known as the Hex Unit - is available in several variants. We also have a Mini Hex, which is the Hex Unit's little brother.

Both units are designed in such a way that the components are easily accessible from the front for maintenance.

The Mini Hex has a soldered heat exchanger and is smaller in size. The piping system also has a smaller diameter than its big brother, but due to the dual-stage vane pump its flow equals that of the big hex unit in certain situations.

The standard capacity of the Mini Hex is 40KW, in the version with a plate heat exchanger it is also available with slightly larger capacities. The standard design of the Hex Unit comes with a plate cooler, which can be extended to 180 kW. Instead of a technical water system, seawater can be used for cooling. If required, the plate coolers can be supplied with a classification certificate.

This heat exchanger has been specially developed to ensure a stable cooling water temperature while minimising condensation in the frequency controls.
Both systems can be equipped with a single or double pump, and also for the supply of external and internal water the configuration may vary.

The Hex Units have a dedicated control circuit with a three-way valve.  An overpressure valve ensures that the pressure does not reach undesired levels.  Deaeration of the system occurs at three locations: on the pump itself to prevent the seals running dry; on the cooler by means of an automatic deaerator, and by manual deaeration. The latter is also used for filling the system.

The system is equipped with a pressure and temperature transmitter which ensures that data can be read into each system via a 4-20mA signal. A standard feature is a flow switch which issues a warning when there is no flow. Leakage detection in the drip tray of the heat exchanger sends out an alarm in case of water leakage.

The system is used to monitor, control and optimise the performance of installed energy sources such as batteries and generators. It also continuously monitors and controls power sources based on load and battery charge status.

Before a battery runs low, the EMS initiates appropriate action. The operator does not have to worry about charging batteries and manually changing power sources.

The EMS is perfectly suitable for monitoring various strings of batteries, balancing the SOC between the sets when charging and discharging.

Another important task of the system is collecting data from the battery systems and presenting these values in a clear and understandable way, such as differing voltages between cells. Also, temperatures of individual cells can be monitored. Each deviation in voltage or temperature can be compared to oil pressure and temperature deviations in a conventional combustion engine. Classification Societies also require these values to be available at the operating station.

The EMS also ensures that the battery system interfaces with the bus voltage via a power converter. This bus voltage, AC or DC, must be constantly maintained within a normal voltage range to ensure a stable voltage network on board. In situations where a battery system issues a power limit as a safety precaution, the EMS responds by taking action and informing the operator if necessary.

KEY FEATURES:

• Customized design
  • PMS systems are usually too complex and/or different to be built using a standardized system.
• Black-out prevention/restoration:
  • Generator(s) standby start/stop activation.
  • Automatic generator synchronization.
  • Automated generator + rail breakers control.
• Power consumption optimization:
  • Equipment limitation/reduction of CPP / dredge pump / jet pump.
  • Generator(s) standby start/stop activation.
  • Automatic generator synchronization.
  • Automated generator breaker control.
• Operation modes, custom design according to client requirements:
• Generator standby start/stop activation.
  • Automatic generator synchronization.
  • Automated generator + rail breakers control.
  • User login (by engineer of customer) to accommodate for changes by customer.
• Multi lingual:
  • Languages real-time selectable by operator.
• Selection of A-brand components using the latest technologies.
• Integration of hardware:
  • Integrated into the main switchboard delivered by Van der Leun or stand-alone to be integrated in main board delivered by another supplier.
• Communications/links possible to integrate systems of other suppliers:
  • Engine control systems.
  • Variable pitch propeller systems.
  • Dredge control systems.
  • Logging / voyage data systems

KEY FEATURES:

• Modular design.
• HMI design:
  • Alarm, Channel configuration (Analog + Digital), Event history, Inhibits, Disabled alarms, Group alarms, Patrol timer, Cabin panels state/selection, Tank measurements, key side and System page (communication state of components).
• Fast ethernet network based remote IO.
• Centrally stored configuration and event history.
• Optimized user interface:
  • Experience used since 2007 (v1), currently AMS sales version is at v3.Multi lingual:
• Multi lingual.
  • 2 languages real-time selectable by operator.
• User login (by engineer of customer) to accommodate for changes by customer:
  • Alarm channels behavior, alarm group selections, new alarms, alarm texts, analog ranges, tank level alarms, alarm inhibits and temporary disabling alarms (due to sensor failures)
• Data bus connection integration:
  • Communicate with several systems (like Vodas / engines)
  • Modbus serial / TcpIp / Rs232 / Rs485 and more.
• Integration of hardware:
  • Integrated into the main switchboard delivered by Van der Leun or stand-alone to be integrated in main board delivered by another supplier.
• Additional custom options:
  • Lay-up with external alarm capabilities.
  • Data passthrough to other customer systems.