NEWS
Renewables TAS enters market
BMT Nigel Gee and Houlder Ltd have teamed up to develop a unique Turbine Access System (TAS), which will increase the safety of crew as well as transfer wave height capability. Te TAS achieves this by allowing the vessel a
degree of vertical movement at the turbine by utilising a damped roller system and executing crew transfer via a lightweight, motion compensated gangway. In allowing the vessel a degree of damped
movement, the connection between the vessel and the turbine becomes a controlled one as opposed to the traditional uncontrolled reliance on a total friction connection. Te vertical movement of the vessel results in a safer connection, eliminating the risk of friction breakaway. Tis, in turn, results in an ability to remain on station at the turbine in greater wave heights than achieved with the static friction lock-on technique. Furthermore, the damped roller system allows the
vessel to position efficiently and safely at the turbine without the need for dynamic positioning, eliminat- ing wasted working time. Te roller system restricts the vessel movement
in terms of surge, yaw and sway, and hence the lightweight gangway is only required to react to motions of pitch, heave and roll. Depending on the application, the roll motion can either be absorbed using a resilient mounting or by active motion compensation. Heave and pitch are absorbed using active motion control. Te TAS therefore provides an access platform which is static in relation to the turbine and which is separated from the roller system at the vessel – turbine connection point.
Propulsion Imtech works with
green tug project Imtech Marine Group has announced that it is to provide solutions to save energy, reduce CO2 emissions and to improve environmental comfort for the Zero Emission Ships initiative. One of the solutions Imtech Marine Group will be
offering to the project is its Green Hybrid Propul- sion System. Incorporated into a tug it will provide a Green Hybrid Tug that will be environmentally friendly, energy efficient and powerful when needed, say Imtech. To achieve this a diesel-electric propulsion system
has been used. Te supply of power is in balance with the demand for power more than in conventional propulsion systems. With two or three diesel-generator sets, the choice of which sets to run and which sets to stop depends on the demand for power. An energy storage system has been incorporated along
with high-energy lithium-ion battery banks that can store the efficiently generated power when not needed. Te diesel-generator sets can be run either very efficiently, storing a surplus of energy into the batteries, or not run at all. When extra power is needed or the diesels are not running at all, the energy can be taken from the batteries to provide power for the propulsion system. With large direct diesel engines the storage of excess
energy is done via a shaſt generator and a lithium-ion battery system. Te parallel hybrid propulsion system can be extended by coupling diesel-generator sets to the energy storage system and to the shaſt generator. Te main direct diesels can be stopped by the use of a
clutch. A calculated choice can be made in the amount of direct diesel power, the amount of diesel-electric power and the amount of battery energy storage installed to provide a very efficient propulsion system.
Acquisition Aveva acquires
Logimatic’s MARS Aveva has announced the acquisition of Logimatic’s MARS business from Logimatic Holdings AS. Tis strategic acquisition of the MARS products
BMT Nigel Gee and Houlder Ltd develop a Turbine Access System that will enhance the safety of crew members (Credit: BMT Nigel Gee).
8
and services will be merged into Aveva’s Enterprise Solutions Group and tightly aligned with its flagship AVEVA NET solution. Te new combination will create an engineering and information management offering for the marine and plant industries, with integrated materials and project management as well as operational planning for design, production and construction.
Ship & Boat International July/August 2010
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76