PURPOSE: To obtain underwater acoustic silulation equipment which can execute a high-speed arithmetic processing by saving energy of computation and by making the computation efficient, in the underwater acoustic simulation equipment generating an underwater acoustic simulation signal in a sonar system of an underwater running body.

CONSTITUTION: Correlative phase computation for each vibrator 02 and underwater acoustic waveform computation not containing phase information among vibrators are executed separately from each other, and a correlative phase is given by a random number in compliance with a Rician distribution, while an offset value of the Rician distribution is determined by the position and the direction of an underwater acoustic source. By synthesizing the result of the correlative phase computation for each vibrator 02 with the result of the underwater acoustic waveform computation not containing the correlative phase information on each vibrator, an underwater acoustic signal for each vibrator is generated.