Lastest developments in deck machinery
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LATEST DEVELOPMENTS IN DECK MACHINERY High-performance ARR hawser winch technology advances from Markey Machinery The current expansion in the energy industry, particularly LNG shipping, among other forces, is increasing the need for more dynamic and exotic shipping systems. Environmental concerns and "not in my back yard" attitudes have resulted in the location of energy terminals outside populated areas and protected waters. This has generated the need for tugs and towing systems that are capable of safely handing large cargo vessels in extremely dynamic and variable open-water conditions. controlled slip and high kilowatt-dissipation capability, and the ability to freewheel line out at extremely high speeds. The winches are powered by one or more AC motors that are controlled by variable frequency drives. Real time load and speed sensing provide the information required to the system's controller to allow the winch to respond during changing dynamic conditions. These load and speed data are displayed at the operator's console to keep him in touch with the response of the system during ship-handling operations and are recorded via a data-logging system for later analysis. Markey currently has a number of Render-Recover utilities in operation, including their DESS-52 186kW Electric High- Performance ARR Hawser Winch, DESF-48 75kW Electric High- Pcrformance ARR Hawser Winch, and is currently developing double-drum waterfall versions of 186kW, 242kW, and 567kW. For further information contact: Markey Machinery, USA. Web: www.marketmachinery.com Under such dynamic conditions, traditional towing practices such as locking towing winch drums to create line pulls beyond the winch's drive capacity can create excessively high-peak line loads or slack line conditions that raise the spectres of fouled propellers or snapping tow lines. As a result, most responsible towing companies have started looking for towing systems that are more dynamic in nature to accommodate these ever demanding conditions. Such systems would need to be able to operate in rough water conditions by a flexible and dynamic winching system that would maintain a "constant" line tension, thereby reducing the potential of slack line Render-Recover is a term trade-marked by Markey Machinery of Seattle, Washington, USA to describe its dynamic tensioning hawser winch technology. It refers to the capability of the winch to accommodate dynamic conditions between the tug and the tow without allowing destabilising high line loads, or slack line conditions. "Render" refers to the condition where the wave action produces forces separating the tug from the tow, resulting in line spooling off of the winch to prevent overload. A combination of pneumatic mechanical brakes and dynamic resistance braking of the electric motor restricts and controls this outhaul. The "Recover" action occurs when wave forces move the tug and the tow toward each other and the controller drives the electric motor to respond very quickly to retrieve the line in such a manner so as to prevent a slack line condition. All Markey Render-Recover winches include safety features such as brakes with MARINE TECHNOLOGY GENTS WANTE BURRARD HEAVY DUTY DECK MACHINERY TOWING WINCHES ANCHOR WINDLASSES MOORING CAPSTANS CARGO WINCHES HYDRAULIC OR ELECTRIC DRIVES BURRARD IRON WORKS LIMITED 220 Alexander Street, Vancouver, B.C. V6A 1C1 E-Mail: englneering@burrardironworks.com HJD Towing Winch M.V. "Marshall Foss' WORK BOAT WORLD November 2007 73

Nor Crane & Winch Group Norway - Singapore - Dubai - China | Singapore : 12 Pioneer Sector 1, Te Dubai : Al Jadaf Shipdocking Yard 79, Te E-mail : info@norcrane.com Web : www.norcrane.ae l\lor Grane & Winch is one ot the tastest growing companies within manufacturing of hydraulic and electric deck machinery, specialized for harbor system both hydraulic and electrical driven, electro hydraulic cranes from 40Tm up to 1250 Tm. Within in its two years existence have also managed to build up own workshop in China, Singapore and Dubai with full test facilities for both winches and

LATEST DEVELOPMENTS IN DECK MACHINERY Improved winch wire control from Rolls-Royce Marine Rolls-Royce Marine has developed an electric spooling device which is of particular interest for fishing winches. Rolls Royce insist that their device gives excellent spooling while significantly reducing wear and tear on the wire. The device can be applied to new trawl winches, older Rauma Brattvaag winches and in some cases retrofitted to winches of other makes. The function of a spooling device is to guide wire on to the drum of a winch in a controlled fashion. This prevents the wire from piling up...

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LATEST DEVELOPMENTS IN DECK MACHINERY Fischcon's deck machinery at work in Port of Rotterdam Fischcon produce in-house engineered, custom-built units containing rotating equipment for marine businesses all over Their product range includes fire-fighting pumps, general pump systems, hydraulic power packs, on-shore generator sets, marine generator sets, compressor packages, and much more. Their 4,500m2 workshop, located near the canal connecting Vianen and Rotterdam, allows them to build and handle structures up to 20 X 12 X 8.5 metres and with weights of up to 400 tonnes, while their...

LATEST DEVELOPMENTS IN DECK MACHINERY MacGREGOR Group have acquired Plimsoll, Singapore MacGREGOR Plimsoll is the new name for Plimsoll Corporation, which was acquired earlier this year by the MacGREGOR Group - part of the Cargotec Corporation. At about the same time MacGREGOR also acquired Plimsoll focuses on the development of hydraulic deck machinery equipment for ship owners, yards and operators. Its key products arc a comprehensive range of winches and cranes for offshore and marine applications. Its products are installed on various kinds of offshore support vessels, oil rig vessels,...