Abstract: Some issues concerning the calculation of the largest launch range (LLR) for wake homing torpedo (WHT) are discussed. The LLR for WHT torpedo shows its uniqueness and complexity over straight running torpedo. The precise calculation of the LLR for WHT depends on the accurate description of the final homing pursuing trajectory of the torpedo, which is virtually impossible. An approximate calculation method is therefore presented and analyzed. The results show that the method is simple and very effective for attack decision making (ADM) of the launcher, typically the submarine. The LLR for WHT is also found not unique but changing with the anticipated impact point, which poses problems in its application to submarine ADM, therefore some solutions are proposed.