Ships for navigating in icy waters having improved propulsion performance in open water and at the same time good maneuverability forward in icy waters are provided. Such ships include those having a bow area with a bulb adapted to generate a bow wave in phase opposition with respect to that generated by the ship's hull.

Ships for navigating in icy waters having improved propulsion performance in open water and at the same time good maneuverability forward in icy waters are provided. Such ships include those having a bow area with a bulb adapted to generate a bow wave in phase opposition with respect to that generated by the ship's hull.

Provided is a control system for operating a floating wind turbine under sea ice conditions. The control system includes a detection device configured for detecting a formation of ice in a critical zone around the floating wind turbine, and an ice inhibiting device configured for manipulating the floating wind turbine in such a manner that the critical zone is free of a threshold amount of the detected formation of ice. Furthermore, a floating wind turbine is provided which includes a wind rotor including a wind rotor including a blade, a tower, a floating foundation, and an above-described control system. Additionally, a method for operating a floating wind turbine under sea ice conditions is provided.

A method to utilize an ice-breaker (10) in a novel way such that tanks of the anti-roll system and/or tanks (21, 22, 23 and 24) of the heeling system are used for recovering and/or processing oil (16) to be recovered from water. The oil is separated from water in a tank of the anti-roll system and/or a tank (21) of the heeling system of the ice-breaker, which tank contains warm water (15) and steam heat pipes (19). The tanks of the anti-roll system and/or tanks of the heeling system of the ice-breaker have separate oil recovery piping which is used when the heeling tanks of the ice-breaker are used for responding to an oil spill.

A method to utilize an ice-breaker (10) in a novel way such that tanks of the anti-roll system and/or tanks (21, 22, 23 and 24) of the heeling system are used for recovering and/or processing oil (16) to be recovered from water. The oil is separated from water in a tank of the anti-roll system and/or a tank (21) of the heeling system of the ice-breaker, which tank contains warm water (15) and steam heat pipes (19). The tanks of the anti-roll system and/or tanks of the heeling system of the ice-breaker have separate oil recovery piping which is used when the heeling tanks of the ice-breaker are used for responding to an oil spill.