Technical digest Sietas lands wind deal A
contract signed by Dutch dredging and engineering firm Van Oord and Hamburg’s J.J. Sietas KG Schiffswerft will see construction of the first offshore wind installation vessel in Germany. The 6,500dwt vessel, for transporting and installing offshore wind power plants, will be capable of lifting 900 tonnes at an outreach of 30mtr and will be capable of working at a height of up to 120mtr. During installation work, a crew of up to 74 people will be accommodated in
Tracking energy P
ortugal’s Tecnoveritas has been working with APL/NOL of Singapore on the installation of Voyage Energy and Emissions Optimizers (VEEO) on board 24 of the companies’ container ships. The vessels, of up to 4,000teu, trade worldwide. Monitoring shipboard energy requirements and emissions performance accurately is vital for owners to initiate steps to improve fuel efficiency and to prepare for the possible cost of emissions in the future. Owners must know how energy is used on board, says Tecnoveritas, and therefore the
Class NK initiatives
apanese classification society Class NK is involved in no fewer than 22 greenhouse gas-related research projects involving 40 organisations including owners, builders, research organisations and equipment manufacturers including power companies, coatings companies and propeller manufacturers. The society is contributing funds of around $25m towards the projects which range from optimising hull forms, to reducing
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frictional resistance, improving propulsive efficiency, raising engine efficiency through such means as waste heat recovery, improving operational efficiency and examining the potential of using hybrid electric power and natural energy in shipboard operations. One such project, under
development with Mitsubishi Heavy Industries (MHI), involves and air lubrication system to reduce
resistance between a ship’s hull and the surrounding sea water. A trial system fitted on board MHI’s 19,500dwt heavy-lift vessel Yamatai, is estimated to have cut CO2 emissions by 10% and now further tests are to be carried out on board a bulk carrier. Meanwhile the class society is also working with Nippon Paint on a new generation of low resistance hull coatings aimed at fuel savings of 10%.
impact of each energy-saving action on operational costs. The Voyage Energy and Emissions Optimizer gathers shipboard data including main engine fuel consumption, propeller shaft energy delivered to the propeller, thrust, hull resistance, alternator power production, speed, distance, different fuels in use, engine and boiler performance, incinerator emissions and weather conditions. Continuous visual displays enable ships’ crews to decide on energy-
single and double cabins.
Siemens Marine Solutions will supply the diesel-electric propulsion and automation system, as well as the medium voltage system for power generation and distribution. Siemsens’ Siship Imac ship automation system will be installed to handle the monitoring, alarm and control functions of electrical systems on board and Siemens will be responsible for the project management, engineering and commissioning of the entire diesel-
electric propulsion system.
The deal comes as pressure grows to hasten the development of offshore wind resources, with fuel prices continuing to climb and a marked anti- nuclear swing adding further pressure to future energy supplies. Meanwhile, leading class society representatives predict that growing numbers of purpose-built wind installation and support vessels built to higher specifications will replace today’s lower-spec craft.
VEEO concept overview
saving actions – a change of course, for example, or a change in vessel trim. A ship’s real-time energy consumption and emissions are also displayed and logged.
The patented Vacuumarator™ pump is the most
www.jetsgroup.com JETS VACUUM AS. Myravegen 1, 6060 Hareid, Norway. Tel. + 47 70 03 91 00. Fax + 47 70 03 91 01. E-mail:
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