Technology and Operations  
This forum is for discussing technological & operational matters pertaining to U-boats. 
Go to: Forum List•Message List•New Topic•Search•Log In•Print View
Re: Draught at periscope depth?
Posted by: ThomasHorton ()
Date: January 08, 2010 03:41PM

A very interesting question.

That document stated that the Fixed optics (the aft/attack) periscope could be raised 17 feet (page 30) But I could not find the same information on the Watch keeping (Forward/search/night) periscope.

If you reference [www.scribd.com] page 79, that diagram appears to have both periscopes fully extended (perhaps a wrong assumption on my part)

If my assumption about that graphic is correct, it would indicate that you are correct in that the numbers have been reversed. It would appear that the submarine would have to be at a shallower depth (keel depth) to use the Forward (obs/search/night) periscope than the deeper depth for the Aft (attack) periscope.

Options: Reply•Quote


Subject Written By Posted
Draught at periscope depth? elanaiba 01/06/2010 05:54PM
Re: Draught at periscope depth? ThomasHorton 01/08/2010 03:41PM
Re: Draught at periscope depth? Jerry and Charla Mason 01/08/2010 04:45PM
Re: Draught at periscope depth? elanaiba 01/08/2010 05:05PM
Re: Draught at periscope depth? elanaiba 01/08/2010 05:27PM
Re: Draught at periscope depth? Jerry and Charla Mason 01/08/2010 11:11PM
Re: Draught at periscope depth? ThomasHorton 02/03/2010 06:48PM


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.
 **     **  ********   *******   **     **  ********  
  **   **   **        **     **  **     **  **     ** 
   ** **    **        **     **  **     **  **     ** 
    ***     ******     ********  *********  **     ** 
   ** **    **               **  **     **  **     ** 
  **   **   **        **     **  **     **  **     ** 
 **     **  ********   *******   **     **  ********