| 11. | At 16 : 10, the submarine rose to periscope depth.
|
| 12. | Snow frosted the periscope and prevented accurate identification of possible targets.
|
| 13. | There is also a second periscope aft of the conning tower.
|
| 14. | The gunner and loader each received a day periscope as well.
|
| 15. | The commander is provided with seven periscopes, a periscopic sight.
|
| 16. | The second projecting bay also has three vision blocks and periscopes.
|
| 17. | The first Mercury spaceflight had no windows, just a periscope.
|
| 18. | He is a member of Periscope Studio in Portland, Oregon.
|
| 19. | But workers using dogs and periscopes also pulled out another 30 corpses.
|
| 20. | The league now has the entire world in its periscope.
|
