IHC Systems Dedicated to Efficient Dredging Dredge'TrqckPF€senta^oh"System,

'Efficient Dredging' helps contractors to make the most of their dredging equipment: to generate high economic and ecological benefits, achieve optimal utilisation rates, reduce dredging time, make the dredging process smoother, simplify fault diagnosis, reduce downtime and wear, prevent under- and overdredging, and maximise crew satisfaction. Even after a shipbuilder has built reliable and efficient equipment, and even after contractors have optimised equipment utilisation, the Efficient Dredging concept continues to make a significant contribution, providing dredgers with extra 'senses' and...

Benefits Efficient Dredging starts with dredging in the right place and at the right depth. Dredging in the wrong locations and overdredging can involve major energy wastage and costs. Under-dredging may mean being called back to finish the job correctly. All dredging scenarios of this kind imply high costs for the dredging contractor, if not the client, and they can also have a negative impact on the hydrodynamic and environmental aspects of the dredging job. In terms of dredge operations, the need for accurate dredging implies that operators must know the position of dredger in the wide context...

Typical System Architecture The core of the system is a dedicated PC containing the DTPS algorithms and models running on Microsoft Windows. The software is dongle-protected to prevent unauthorised use. At present, the DTPS function is usually an integrated and/or distributed part of a larger monitoring and automation TCP/IP network such as IHC Systems' dredging control system (see the DCS brochure on the website). The DTPS computer receives its dredger and sensor data from a dedicated computer - the IHC Digisys computer - which is the platform for the respective STPM/ DLM/ DPM/ACC/XPM applications....

Depending on the specific DTPS functionality and options, the dredging depth and/or lateral position of the dredger and the dredging 'tool' are presented as 'dressed wire models' on the video screen with respect to the waterline and the vessel's centreline and in the context of the dredging area and DTM. The top, side and back views of the ship, including the suction pipe or cutter ladder or boom and stick, are presented together with detailed tool and bathymetric information in a digital terrain model (DTM) of the dredge area in a particular geographic projection model. The DTM is updated continuously...

Equipment geared to performance DTPS can be used for sending information to, for example, ECDIS and DP/DT systems. Depending on the type of dredger, DTPS exchanges data with the Digisys computer: • On board TSHDs with the STPM® and/or DLM® function • On board CSDs with the DPM® and/or ACC® function • On board excavators with the XPM® and/or AXC function Options • Touch screen operated version • Electronic Chart System background ECS (S57, VPF, ARC) • Additional survey package

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