Hull ice tests completed at Aker Arctic’s laboratory in Helsinki

The development of the new Kvarken ferry’s optimal hull shape is underway. This so-called Hull Optimization Programme and the first open-water tests were described in our previous newsletter. We have now performed similar tests in ice conditions at Aker Arctic’s laboratory in Helsinki.

– The route between Vaasa and Umeå is almost always ice-covered during certain parts of winter. The ice conditions vary greatly from year to year due to e.g. the average temperature of the winter. In addition, the route’s local variations can be significant. Sudden changes in the weather can lead to several-meter-thick ice ridges in a very short time, according Mr Torvald Hvistendahl, the Naval Architect at SSPA. He showcases a figure illustrating the ice condition variations during the past 30 years.


Figure: The ice condition variations during the past 30 years.

– Reliability is one of the most highly valued characteristics of the new ferry designed to operate between Vaasa and Umeå. In other words, the new ferry is expected to have a high level of usability with only few traffic disruptions. However, an overly ambitious ice capacity can, at the same time, result in the ferry becoming less energy efficient in the open water. Therefore, this situation provides a good example of assessing and balancing two characteristics in order to reach an optimal solution, Hvistendahl continues.


World-leading knowledge

The testing of a model-scale ship’s performance in ice conditions is an extremely specialized area of operation − one where the Helsinki-based Aker Arctic company is the best in the world. The material characteristics of ice are far from linear, and the recreation of e.g. 50 centimeters of thick level ice in model-scale is a complex task. In a somewhat simplified way, the ice in laboratory conditions is similar to the consistency of “Frozen Margaritas”.

It takes a long time to create the right consistency and, therefore, it is important to try to make good use of the ice by running several test series. For example, the first performance test is run through unbroken ice, followed by a test in the brash ice, which is then followed by maneuverings etc. In this way, the valuable ice is utilized to its full potential and the researchers gain results from different scenarios.

The tests performed in June proceeded according to plan and provided promising results. The ferry passed all the tests, and the collected data is now ready to be put together. These results − together with the previous tests performed in open water − form an important basis for the continuing optimization and design work of the new ferry. We hope to return with more reports about the ferry’s development during this autumn.


Photograph of the tests at Aker Arctic’s laboratory in Helsinki

11.01.2019 The new Kvarken ferry will be built in Raumo
12.07.2018 Kvarken Link AB has invited four shipyards to hand in their binding offers
15.02.2018 The Project Midway Alignment Is Going Ahead – Request for Information Sent to Potential Shipyards
19.04.2017 Work for the new Kvarken ferry runs smoothly
19.09.2016 Midway Alignment Honoured with the International Sail of Papenburg Award
03.06.2016 Further Development of the Strait Continues
18.04.2016 A Succesful First Year for Kvarken Ports 
16.02.2016 Flags Raised in Celebration of Cross-Border Collaboration
16.12.2015 End of the First Phase and Finalization of the New Application
16.12.2015 Collaboration Benefits the Development of Logistics
01.12.2015 Fun Facts About Midway Alignment´s Communication
25.11.2015 Cross-Border Collaboration to Attract Tourists
05.11.2015 Guided by Systems Thinking
28.10.2015 City of Vaasa and Umeå Municipality to establish a joint company – ”Midway Alignment Ab Oy”
30.09.2015 Pieces are Falling into Place
25.09.2015 Even a Global Company can be a Regional Actor
24.09.2015 Construction of an LNG Terminal in Vaasa is Explored
14.09.2015 The Timing of the EU Visit Is Just Right
09.09.2015 The Port Manager Has Several Irons in the Fire
26.06.2015 Hull ice tests completed at Aker Arctic’s laboratory in Helsinki
24.06.2015 Improving Space Utilisation in the Port of Vaasa
05.06.2015 Midway Alignment in brief
18.05.2015 First tests completed in the Hull Optimization Programme
05.05.2015 München Transport and Logistics Tuesday May 5th, 2015
05.05.2015 Railway to Port Could Serve as Special Transport Route
04.05.2015 Prepared for a successful exhibition!
16.04.2015 Ship Design is All About Optimization
10.04.2015 The completion of the new ferry’s preliminary design is an important milestone
07.04.2015 Preparation for the Second Phase of the Project Is the Key to Success
26.03.2015 The Baltic Trendsetters Club Certificates presented
24.03.2015 Midway Alignment and Kvarken Ports goes MÜNCHEN TRANSPORT LOGISTIC May 5-8, 2015
23.03.2015 New trends and sunny faces at EnergyWeek
04.03.2015 Wasaline's result positive before depreciation
29.01.2015 Cargo collaboration important for Wasaline
29.01.2015 Positive News: Growth from the North Report Published in Tromsø
29.01.2015 Wasaline Has Opened Spring Season
28.01.2015 Harbour Rail Is An Important Transport Corridor
16.01.2015 We have now launched Kvarken Ports - a joint company for the ports of Umeå in Sweden and Vaasa in Finland
02.01.2015 Now we have launched - Kvarken Ports
12.12.2014 An Eventful First Year
01.12.2014 Kvarken passenger service designed according to customers’ wishes and needs
18.11.2014 Visibility for Midway Alignment in Gothenburg
13.11.2014 Exports from the Port of Vaasa increasing
12.11.2014 The North Bothnia Line − Good news and effects also for Midway Alignment
11.11.2014 Viking Grace receives international environmental prize
03.11.2014 Kvarken Ports CEO: We are stronger together
08.10.2014 Stena Line-Wasaline cooperation
28.08.2014 Midway Alignment Is Gaining Momentum – The Concept Is Shaping Up
05.08.2014 Wärtsilä wins ship design contract for environmentally sound Gulf of Bothnia ferry
02.07.2014 Midway Alignment – Popular seminar at Almedalsveckan