This study focuses on the simulation of pressure and acoustic signals for underwater use, and aims to eliminate challenges, which have a hindering effect on the accurate modeling of pressure signals in sea environments. Pressure signal is key because it provides unique features of object presence or absence, needed in case a number of underwater activities. On the other hand, the sea does not have a well-defined pressure signal and the simulation of that signal is inherently complex. For this specific project, pressure signals that the objects will generate will be determined by their size and tonality. Consequently, according to this, pressure signals will be high impedance received signals. This processing of signals on the basis of the presence or absence of objects also offers the timing information about the object’s arrival and departure. Underwater environments have a very versatile sound space which usually extends from 0 to 10 kHz. The objects are able to generate a unique signature because of the equipment they have on board after which they are used for a very long time. Fourier transforms are used as a tool to detect these peculiarities; once they have been detected, the contributions made to the signature by the major frequencies can be identified. On the other hand, both spectral analysis techniques are implemented to explore the ripples, roll-off, as well as overshoot, thus making it comprehensive to know and understand more about all its characteristics.