To reduce the interference of corrosion electric field of ship on electromagnetic communication equipment, it is necessary to suppress or eliminate the corrosion electric field. A submarine corrosion electrostatic field model was established by using the three-dimensional boundary element method (3D-BEM) to investigate the influence of compensation anode positions on the electric field damping effect. The principle of electrostatic field damping was explained based on the electric dipole model theory, and the reasons for the difference in corrosion electric field of ship with different compensation anode positions were analyzed. Numerical simulation results show that the circumferential position of the compensation anode had little influence on the damping effect, while longitudinal position had significant influence on the damping effect. In addition, when the longitudinal distance between compensation anode and propeller was 16.6 m, 10.8 m, 5 m, and 1 m, the damping effect of the electric field modulus was 3.41%, 24.88%, 49.27%, and 34.15%, respectively.