SH5 RAOBF Question

Hello everyone! I recently installed the Wolves of Steel mod for SH5 and I'm loving it so far! I am interested in using the RAOBF to make targeting solutions, but I am having some issues. I played through the tutorial, but even with the exact numbers they gave me, I launched a torpedo and totally missed the intended target. I thought this might just be a glitch in the game, but I have tried a few attacks in the actual game, and have once again, missed terribly. Does anyone have any advice on using this instrument effectively during combat? Any help would be appreciated! Thanks!