Abstract
Monitoring vibrations (VMs) of the sea-going ships are necessary to measure and control under the Rules for Classification and Construction of Sea-going Ships of some national registers, such as Russian Maritime Register (RMR) of shipping, Edit 2014. The VM is important and necessary for safety marine diesel engine (MDE) in its technical operation at dangerous levels of torsional, axial or lateral vibrations (TVs, AVs, LVs), which appear in practice at some abnormal regimes, especially on the two-stroke MDE and its main propulsion plant (MPP). This paper presents the results of experimental study for monitoring vibration of the four-stroke MDE, and it’s MPP in the sea — trail test of the MV.KN168, designed and manufactured by Hong Ha Shipyard (Haiphong, Vietnam, 2017). The vibration signals were measured and analyzed using Multi-channel Measurement and Monitoring Vibration System (MMMVS) made by Vietnam Maritime University (VMU).The vibration research results on the four-stroke MDE of the MV.KN168 indicated that the vibration levels of the every measured position lie in the allowable limitations.
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