Abstract: An asymmetric bridge of a ship where the main navigation workstation is located aside the center line of the ship on the starboard side of bridge at the starboard end of the bridge. The front bulkhead of the bridge is directed from the main navigation workstation to the port side of the ship in an angle abaft the beam. The aft bulkhead of the bridge is directed from the main navigation workstation to the port side of the ship in an angle between the direction of center line of the ship. The angle is preferably 10.degree.-15.degree. and the angle 40.degree.-45.degree.. The angle of the field of vision is about 320.degree. seen along the bulkheads of the bridge.

Abstract: A stern arrangement for a ship where the stern of the ship is made modifiable or convertible for at least two different purposes by moving or by replacing at least a part of the stern. The stern of the ship is convertible to be a towing notch or to be equipped with a stern roller. The invention provides an icebreaker which is equipped with a towing notch in wintertime and with a stern roller in the summertime for open water operations.