Abstract: There are four major factors affecting the shipboard equipment which subjected to battle damages under shock load of weapon attack.This paper established a three-dimensional model of ship hull and electrical system.U sing the Matlab software,a Monte-Carlo simulation of ship under multiple weapon attacks was carried out.Method for calculating the damage probability and damage level of various portion of electrical system was propose d taking into account the multiple damage factors.The damages to the warship electrical system were evaluated as the assessment weights were confirmed by Hierarchical Analysis Process.Suggestions were also provided for designing and protection of the electrical system