Method for detecting and preventing faulty operations of e.g. machine parts of motor ship, involves identifying source of anomalies from information of acoustic spectrum, and determining machine parts corresponding to identified anomalies

摘要

The method involves acoustically detecting machine parts of a ship (2) during displacement of the ship by recording an acoustic spectrum of the ship outside the ship in an aquatic environment. Information i.e. frequential data, of the recorded acoustic spectrum are processed. The frequential data and a level of the recorded acoustic spectrum are extracted. A source of anomalies e.g. abnormal wears, are identified from the processed information. The machine parts corresponding to the identified anomalies are determined.