The performance of transfer alignment directly determines the initial alignment accuracy and autonomous navigation capability of weapon platform inertial navigation systems, which plays a critical role in the combat effectiveness of weapons such as missiles and torpedoes. Based on the theoretical framework of transfer alignment, this paper systematically investigates the influence mechanisms of parameter quality such as position errors, attitude errors, and velocity errors of the master inertial navigation system on the transfer alignment performance of the slave inertial navigation system. Through quantitative simulation analysis of the evolution laws of velocity errors, position errors, and heading errors of the slave inertial navigation system under different error scenarios, the effects of ship maneuvers on the convergence time and steady-state errors of transfer alignment are revealed. Additionally, suggestions for optimizing ship navigation states are proposed, providing a theoretical basis and technical reference for engineering applications.