First off, the attack periscope wasn't x8, it was x1.5 and x6, while the observation 'scope was x1 and x4. The purpose was to observe, or look for targets while submerged, which is why it's in the control room for easy access. The smaller resolution gave it a wider field of view, and the larger head and lens let in more light, which made it much better at night.
__________________
“Never do anything you can't take back.”
—Rocky Russo
|