A SHIP PROPELLED BY A TWO-STROKE SLOW-RUNNING INTERNAL COMBUSTION ENGINE

摘要

The engine room of a ship (1) is positioned so far forward in the ship that several cargo holds (3) are located aft of the engine room. The ship has a tall slender superstructure (6). The main engine (8) is connected with the propeller (7) through a transmission shaft (9) at least 40 m long. The combination of the length of the shaft, a slow-running main engine, and a tall, slender superstructure results in a imminent risk of inconvenient vibration in the superstructure generated by axial resonance vibration in the shaft (9). A hydraulically acting damper device (10) mounted near the aft end of the transmission shaft damps the axial vibration to an acceptably low level.