>>8357903 (PB - Q)
>>8357903 (PB - Q)
>Silent running is a tactic used when….
Silent running is a stealth mode of operation for naval submarines. The aim is to evade discovery by passive sonar by eliminating superfluous noise: nonessential systems are shut down, the crew is urged to rest and refrain from making any unnecessary sound, and speed is greatly reduced to minimize propeller noise.
>>8357870 (pb - Q)
>Rig for Red.
Periscope depth soon?!
You rig for red shortly before you come to periscope depth at night to …
"Yes, subs rig for red at night, and rig for black when going to periscope depth."
"Turn the control center lights to red in preparation for PD. Red light making it easier for your eyes to adjust to darkness when you rigged for black prior to heading up to PD."