This drawing?
http://www.starshipdatalink.net/art/images/dec-2.gif
The actual model doesn't have a torp launcher muzzle anywhere, of course - but there's a beauty shot of the ship where the base of the neck features very bright white lights where there is no window. This could be argued to be the launcher with the covers slid back for action.
Who knows, perhaps the whole ribbed forward edge of the neck is one big rolling door, optionally revealing only the lowermost launcher, or then two, or three, or then all six of them vertically stacked?
Timo Saloniemi