DEFINING THE SHIP MAGNETIC PERFORMANCE BY MEANS OF PASSAGE CHARACTERISTICS

Defining the necessary level of protection for the ship in order to fulfil its operational purpose is a prerequisite in ship magnetic signature analysis and in adopting the appropriate method of reduction. In the study of ship magnetic field it is vital to thoroughly establish its components for an accurate assessment by using several efficiency indicators chosen precisely on the basis of those components. This paper performs the analysis of the passage characteristic of a medium sized special ship on the basis of its longitudinal magnetic characteristic. Furthermore, the results acquired through Fourier harmonic expansion are compared to the measured values. The time differential of the passage characteristic is also significant in this way. Therefore the possibility of passage characteristic control and implicitly the ship protection against magnetic mines emerges by means of complete knowledge of the ship’s magnetic field and adjusting the speed when transiting a mine danger area.