General Discussions  
This is the place to discuss general issues related to the U-boat war or the war at sea in WWII. 
Go to: Forum List•Message List•New Topic•Search•Log In•Print View
Re: what's the red light for?
Posted by: Keith Lloyd ()
Date: January 14, 2002 04:13AM

<HTML>The red light was used to preserve the crew's night vision when viewing through the periscope and when moving from the boat's interior to the bridge while surfaced. Also, when the boat is on the surface, any light that may inadvertantly filter to the outside will less likely be detected by an enemy ship or aircraft. White light is easily seen from a distance, while red is much more difficult to see. This is the same reason why infantry flashlights have a red lens.</HTML>

Options: Reply•Quote


Subject Written By Posted
what's the red light for? Kruger 01/14/2002 03:24AM
Re: what's the red light for? Keith Lloyd 01/14/2002 04:13AM
Re: what's the red light for? Yuri IL\'IN 01/14/2002 10:21PM
Re: what's the red light for? W. Frank 01/14/2002 04:20AM
Re: what's the red light for? Leif... 01/14/2002 07:33AM
Re: what's the red light for? Doxbox 01/14/2002 04:16PM
Re: what's the red light for? Parade 01/14/2002 08:25PM
Thanks a lot! Kruger 01/15/2002 12:14AM
Re: Thanks a lot! Peter Colson-Osborne 01/16/2002 04:25PM
Re: what's the red light for? Stuart Cockroft 01/19/2002 04:05PM
Dangers using red light: Don't navigate using red Jack 01/15/2002 12:24PM
Re: Red goggles are OK! Garth 01/15/2002 12:54PM
Re: Red goggles are OK! Parade 01/15/2002 10:14PM
Re: Dangers using red light: Don't navigate using J.T. McDaniel 01/15/2002 10:42PM
Submarine on Reef jim kippola 01/16/2002 03:15AM
Re: Submarine on Reef dogbox 01/16/2002 10:28AM
Re: what's the red light for? Rodney Martin 01/28/2002 09:39PM


Go to: Forum List•Message List•Search•Log In
Your Name: 
Your Email: 
Subject: 
Spam prevention:
Please, enter the code that you see below in the input field. This is for blocking bots that try to post this form automatically.
  *******   ********  **     **  ********   ********  
 **     **  **        ***   ***  **     **  **     ** 
 **         **        **** ****  **     **  **     ** 
 ********   ******    ** *** **  ********   **     ** 
 **     **  **        **     **  **     **  **     ** 
 **     **  **        **     **  **     **  **     ** 
  *******   ********  **     **  ********   ********