| Summary: | Background To design a ship its specific design requirements are to be known. These are, together with class notations, specified in previous reports and extended in this report. Since the requirements are formed iteratively, design freedom is possible. This is used to implement several innovations into the design which improve the performance of the vessel. The vessel is designed for worldwide operations to support offshore installations, in open waters and first year ice. Results The vessel is built with regards to a good performance in open water and ice, safe transportation of cargo and safe working conditions for the crew. The hull of the ship is designed with three operational modes in mind. An open water bow for low resistance in open water, an ice bow to allow good performance in ice and both are designed to reduce slamming during dynamic positioning operations. Installation of two Azipod thrusters gives good maneuverability with little compromise on performance in ice or open water. Four engines with three different sizes make sure the power supply meets the requirement, minimizing energy losses due to overcapacity. To meet strict environmental laws the ship is able to use LNG as fuel and therefore does not exhaust SOx. Besides that fuel oil can be used in less strict areas. The hold is filled with tanks for dry bulk and liquid mud, meeting the average for this size of vessel. Winterization is achieved by the extended superstructure (ESS) which protects crew, cargo and even survivors from an oil rig catastrophe from the environment. As the market changes, the demands for ships change. The modular container hold allows for extra tanks, pumps and engines to be placed, adapting the ship to owner needs. Even towing is possible, and might even be necessary when performing ice management. There are however some design choices that require attention. The ESS, in combination with the LNG tanks, limits the line of sight from the bridge. Helicopter landing facilities should be provided, but are hard to achieve ...
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