[REQ] A real difference between observation and attack periscopes

[Sailor Steve]

Originally Posted by mcarlsonus

...the observation scope DID have a lower magnification than the attack. The whole purpose was to use that scope as a "high observation" piece, or to enhance night vision. Such captains as Fluckey and O'Kane (my hero! - and the reason I'm here today. He and the Tang rescued my Naval Aviator Dad from the drink!) used it constantly as "one more eye."

This 'scope does have a wider field of view and is certainly NOT stealthy! And, by the way, Capt. O'Kane swore by 7x50 binoculars and built additional watch stations onto the Tang's superstructure.

According to the actual manual, both scopes have the same power:
http://www.maritime.org/fleetsub/pscope/index.htm
http://www.maritime.org/fleetsub/pscope/chap4a.htm#4A
http://www.maritime.org/fleetsub/pscope/chap6a.htm#6A
http://www.maritime.org/fleetsub/pscope/chap7a.htm#7A

Also note that the maximum elevation of the 91KA4OT / 1.41HA Observation Periscope is 74.5 degrees, not 85 or "straight up" as has been stated on other threads.