[LonePalm]

Between sunset and sunset ships are required to display navigation lights. Most ships do not show any other external lights so that other ships can see their navigation lights, and vice versa. Even cruise ships darken ship from the bridge forward.

The blue component in lighting destroys night vision. Ships 'rig for red', use red lighting, to preserve night vision and still allow people to move about safely.

It doesn't reduce detection. If you are close enough to see red lighting on a ship's bridge you are already too damn close for safe navigation.

WWG1WGA

Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)

[reed13k]

True about too close, but on my commands [ships I was on] ‘rig for red’ also included barriers for all lights to prevent leakage.

[little jeremiah]

Hmm, so what specifically does “rig for red” mean? If it isn’t helpful for avoiding detection.