Objectives  In order to determine the antagonism relationship and mutual influence between anti-ship missiles and shipborne defensive weapons, and meet the design requirement by using quantitative methods to provide the configuration for the self-defense weapons in warships,

  Methods  this paper mainly realizes the simulation of the anti-hit problem between a single anti-ship missile and a warship based on the discrete sequence method. The Monte-Carlo method is then used to carry out a discrete sequency-based assessment of a warship's air defense performance. Through this method, the convergence of the evaluation is solved.

  Results  The results indicate that the diameter of the anti-ship missile, position of attack and velocity will each have an impact on the penetration effect, and the velocity effect is most obvious. The reduction of the attack distance within the range of the shipborne defense system will significantly reduce the probability of being hit; otherwise, with the reduction of the attack distance outside of the defense distance, the effect on the probability of successful interception is not significant. It is also pointed out that the reaction time of the shipborne weapon system and success rate of single interception are important factors affecting the defensive effects of a shipborne weapon system. In particular, when the speed of an anti-ship missile increases, its impact will be more significant.

  Conclusions  The results of this research can provide technical support for the quantitative design of ships based on survivability.