I find in SH3 and SH5 that there is a bit of a glitch with the homing torpedoes. If you set them to impact and the most shallow depth they will usually run up the screws of the ship and detonate as if they were magnetically triggered.
Anyway, in SH5, the homing torpedoes are not nearly as "magical" as they are in SH3. They have a much narrower "cone of vision" in front of them to seek after, and targets have to be moving at high speed or they won't track at all.
If you don't have real nav installed then you should be able to see your torpedoes on the map screen. When they are tracking they "wiggle" as they go.
Steve
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