Feature 6 | GREEN CRAFT TECHNOLOGY New design keeps Baltic clean


Finnish ship design and marine engineering consultant, ILS, has prepared the tender documentation and carried out the project design of a new multi-purpose ice-going environmental protection vessel, writes Henrik Segercrantz.


has been created by designers ILS, of Finland. Te shipbuilding contract with Uudenkaupungin Työvene Oy shipyard and the Finnish Environment Institute was signed in October 2007 and ILS subsequently signed a contract with the shipyard to continue the work as main designer. Te new craſt has been designed for naval


A


duties and as a support vessel for oil and chemical combating work, fire-fighting, rescue, and emergency towing duties. It is also fitted with a moonpool and an ROV for diving and underwater duties, includ- ing that of recovering oil from shipwrecks. Te vessel is to be able to fulfil its tasks in the existing ice and sea conditions in the Gulf of Finland, and is fitted with some new innovative oil combating solutions. ‘The background of this project was


actually the environmental icebreaker project which we worked on a few years ago, and which has now been shelved,’ said Jyrki Lehtonen, managing director at ILS. Back in 2004, the Finnish Maritime Administration and the Finnish Environ- ment Institute issued a tender based on project design work and a technical specification from ILS for a new icebreaker, which was to double as a stand-by oil and chemical combatant vessel also capable of various rescue duties. Te icebreaker in the tender had a length


of 108.4m, a breath of 24m, a draught of 7m, and an azimuthing propulsion power of 2 x 8MW. Te operational area was to be the Gulf


of Finland, where oil transportation is rapidly increasing. However, it turned out that this vessel became too expensive, partly due to the fact that there was not work for the vessel during the summer


Ship & Boat International May/June 2008


new vessel, for the Finnish Environment Institute, which will also serve the Finnish Navy,


The new multi-purpose ice-going environmental protection vessel for the Finnish Environment Institute and the Finnish Navy has been designed by ILS.


period in the Baltic Sea area (the area of operation permitted for the vessel to be able to handle its stand-by duties), and thus no income. Synergies were not found for a multi-


purpose icebreaker project, but worked out well in combining the needs of the Finnish Environment Institute and the Finnish Navy for a new multi-purpose ice-going environmental protection vessel. Te €47 million vessel is being financed by both parties and will be in service in early 2011.


The new vessel With a length of 71.4m, a breadth of 14.5m, a depth of 7.0m, and a draught of 5.0m, the vessel has a deadweight of 1118dwt. Tere is a capacity for a standard crew of 20 people, but it can accommodate a total of 40 people onboard over an extended time. Te vessel is set to receive Germanischer Lloyd’s OILREC and CHEMREC and also Fi-Fi1 classification.


Four Wärtsilä 9L20 DE diesel genera-


tors, each rated at 1800kW, will drive electric inverter-controlled ABB propul- sion motors and two Rolls-Royce’s Ulstein Aquamaster azimuth thrusters, each rated at 2700kW. Te bollard pull will be 64tonnes. Te vessel has an oil collection tank, with a capacity of around 1000m3


, and


there is one centrally-located stainless steel tank for chemical collection, with a total capacity of 180cm3


. Tis tank doubles-up


as a cable tray, and will be used in cable- laying duties by the navy.


Oil recovery The vessel wi l l be capable of recovering oil in open water in sea states with a significant wave height of up to 2m. In normal sailing conditions, oil will be recovered using two oil booms, one on each side, with excess treated water put back into the sea. Te specified capacity is 2000m3


oil per day. Te vessel’s stable oil 53


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