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Improved Double-Acting Ship Solutions for Transportation Systems Aker Arctic Technology Inc Newsletter March 2011 Arctic PassionNews 1 / 2011 Improved Solutions for Ice management Double-Acting transportation protects ships Ship systems and floaters at Better open water features and Choose right on page 4 work more on page 3 How does it work on page 9 Arctic Passion News March 2011 In this issue Towards risk assessment Page 2 From the Managing Director Page 3 Improved based safety ruling Double-Acting Ship Page 4 Complete solutions for transportation needs Dear reader, These ongoing processes have put an Page 9 Ice management unfortunate time-out in short term for protects ships and tankers When writing these words for the further investments in new harsh Page 14 Ice pressure previous Arctic Passion News the environment operations as the industry is on fixed structures Macondo well was still leaking and the waiting for authorities' attitudes in the Page 15 What's up industry shocked from the consequences post-Macondo world. On the other hand Page 16 Trip to Norway of the accident. The leak was rather the new situation has changed the quickly stopped and the well closed. BP overall situation dramatically; the trend has to be praised on the fact how well appears to be that now the operator Announcements they managed to work in finding the himself needs to start thinking on his solutions to cut the deepwater leak. Now risks in any planned activity and create the investigation committees have his own risk assessment and his own published their reports and authorities in decision-making on acceptable risk all oil producing nations are reviewing levels, which then need to be their rules, practices and safety demonstrated to the authorities. standards. I expect this trend and these processes The offshore industry, as well as the to bring rapidly new findings and world shipping, is among the most potential for new solutions, as well as globalised branches of economic activity. new technologies and practices into The ships and floaters are moved quickly harsh environment operations. One of from one ocean to another and the such key activities is rapidly evolving operators need to cope with various philosophies for Ice Management, Pekka Salmi national practices. This is one of the protective icebreaker operations to Senior adviser Pekka Salmi retired in major industry challenges. The mitigate the risks in offshore and September 2010. Pekka served AARC differences in rule and regulations over shipping operations in icy and cold Arctic and the companies preceding AARC one single border line are well conditions. In this newsletter you will find during his 40 year long career and can demonstrated in the Norwegian initiative also articles on how Aker Arctic is now enjoy his well earned retirement called Barents 2020, where the safety participating in solving the problems for days. regime in the North Sea and the Russian these new demands. Arctic are being analysed and compared in order to find a way towards more Last year we started publishing this harmonised rule settings. newsletter as an experiment which our customers had expressed the need for, Similarly the world shipping is in order to better follow what we are encountering the safe ice operation doing and how technologies for Arctic standards differently in Northern Europe, operations are developing. The feedback Canada, the Caspian Sea and Russian from our customers has been entirely Arctic. There is today an ongoing positive. Therefore we are now process led by IMO to find harmonised encouraged to continue with the tradition practices, with a goal set for 2012 to and you now have in hand the first issue something called Polar Code, for 2011. We hope you will enjoy your incorporating an effort to find uniform reading and learning on how much there thinking also in the technical guidelines still is room for improvement and As part of the Christmas preparations a for safe ship construction. potential for better practices and brief gathering by AARC staff was solutions in safe and sustainable Arctic arranged to celebrate awards for operations. employment anniversaries. Mr. Esa Hakanen (in the picture) and Mr. Sami Saarinen were celebrated for their first 10 years with the Group, Mr. Kauno Mikko Niini Sarkkinen and Ms. Ann-Cristin Forsén for 20 years, Mr. Mauri Lindholm for 30 years and Mr. Mikko Niini for 40 years. Aker Arctic Technology Inc will participate in the following events. Come and meet us there. Front cover The latest of Aker Arctic's design 12-15. April 2-5. May 21-24. June achievements are five Shallow-Draught Arctic Shipping Summit 2011 OTC 2011 Mioge 2011 Icebreaking Tugs for STX Norway Helsinki, Finland Houston, Texas Moskow, Russia Offshore AS. Stand number 1325, Pavillion 2, hall 1 First of the series "Mangystau-1" was hall E delivered last August from STX Braila 11-14. July 20-23. September 12-16. September shipyard in Romania and has POAC 2011 Neva 2011 RAO 2011 successfully met the harsh North Montreal, Canada St. Petersburg, Russia St. Petersburg, Russia Caspian ice conditions. Hall 7 2 Arctic Passion News March 2011 Improved Double-Acting Ship AARC is an independent Arctic Risto Kurimo is a hydrodynamics technology provider and is working in specialist with experience from cooperation with many international shipyards, model testing and developing clients, oil companies, shipowners and Azipods. He is a Naval Architect and has shipyards in developing new solutions. worked in the industry over 30 years and One of such regular client over the at AARC since 2006. In his free time years has been Daewoo Shipbuilding & Risto enjoys boating both at sea and in Marine Engineering Co., Ltd. (DSME) Finnish Lake Päijänne together with his with whom AARC has recently wife and two sons. developed a new Double-Acting ship design with improved open water performance and reduced fuel consumption. The Double-Acting ship concept is Twin gondola stern open water can be reached compared to designed to run ahead in open water and a conventional open pram type stern with astern in heavy ice conditions. The AARC has extensive knowledge of ice twin pod propulsion. This improved actual bow form can be optimized for the going vessels and DSME of open water performance in open water is possible selected route and the superior ice going vessels. By combining their knowledge because of a very favourable flow performance when running astern the companies managed to develop a interaction between the stern gondolas reduces the need to use icebreaker new hull form that can efficiently be used and the propulsion units. The successful assistance. The benefit from the freedom both in ice and in open water. fine-tuning of the gondola form means no in bow form design is that the Double- “The vessel we designed is an Aframax sacrifices of ice going capability were Acting Ship has much better open water size tanker with a completely new type of made. Running astern the vessel can characteristics than conventional ice ice breaking stern. The aft body has twin penetrate consolidated ridges almost going vessels. Anyhow, as a keen seeker POD propulsion, twin gondola type hull continuously with creeping speed and by of continuous improvements AARC and cut-off transom,” says Project turning the PODs from side to side. started to investigate in co-operation with Manager Mr. Risto Kurimo from AARC, The vessel is intended for shipping crude DSME if it would be possible to develop who has also been responsible for the oil from Pechora Sea to Murmansk, but a new type of Double-Acting Ship with project in AARC. ice model tests demonstrated that from further improved open water The twin gondola stern results in high ice performance point of view the vessel characteristics without compromising on propulsion efficiency. In spite of a slightly could be capable to operate also on Kara ice going features. higher open water resistance of the twin Sea. gondola a fuel saving of around 10% in The newly developed ice breaking twin gondola stern form Model ready for astern running ice tests with pulling type pods turned for backing position Comparison of propulsion efficiency()D in open water D when sailing ahead Fuel savings fuel savings are achieved by “ 0,70 adopting this new twin This has been a two-year gondola stern form.” 0,60 interactive development project with the customer. All The concept design was 0,50 ice model tests have been presented at the Arctic 0,40 performed in our testing Shipping conference in 0,30 facility whereas open water Montreal in November last features have been tested at year (Sung-pyo Kim, Young- 0,20 SHIP 1 SHIP 2 SHIP 3 SHIP 4 DSME Arctic SSPA in Sweden,” Mr. Kurimo bok Choi and Risto Kurimo: Aframax Tanker “Hull Form Development for Ships 1...4 from Aker Arctic Database: continues. “This highly ice Typical icebreaking ships with open pram type stern, capable vessel works well DSME 100k TDW Class equipped with twin pulling type pod propulsion units also in open water and clear Arctic Tanker”). 3 Arctic Passion News March 2011 Complete solutions for transportation needs Developing transportation systems can sometimes last as long as 20 years. AARC follows its customer projects from the early stages until the operation is running. Ice performance characteristics for tankers in 80.000-100.000 tdw size class (level ice) P [MW] required shaft power Conventional tankers with ice class 60 Bulbous bow designed for icebreaking Moderate icebreaking bow 50 Extreme ice bow Extreme Double Acting Tanker stern Mastera/Tempera 40 T/T Manhattan 1970 T/T Manhattan 1969 30 Arctic bulbous bow 20 10 0 0,0 0,5 1,0 1,5 2,0 2,5 Hi [m] ”There are three things that set us apart AARC's database contains information about ice conditions and correlations generated from our competitors: the spectra of from model tests and tests from real vessels.
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