Technology and Operations  
This forum is for discussing technological & operational matters pertaining to U-boats. 
Re: Salt water vs. fresh
Posted by: SnakeDoc ()
Date: January 17, 2013 09:10AM

Hi,

Don Thomas Wrote:
-------------------------------------------------------

> Is there an equation relative to the amount of
> water the submarine displaces while on the surface
> to its speed?

Can't give you detailed data, but here is some information:

The KTB for U-604's 1st patrol:
28 August, 1942, 04.20:
"During the pursuit, at the suggestion of the Engineering Officer, converted
main ballast and reserve fuel oil tanks 2 and 4 for use as ballast tanks. The
remaining fuel oil, 1 ton, was transferred from the ballast tanks to the regulating
and reserve fuel oil tank. At the same time the negative buoyancy tanks were blown.
Thereby gaining about 1 knot. With the high enemy speed of 16 knots these
measures were decisive."

[uboatarchive.net]

--
Regards
Maciek


[www.tvre.org]

Options: ReplyQuote


Subject Written By Posted
Salt water vs. fresh Don Thomas 01/14/2013 06:48AM
Re: Salt water vs. fresh ROBERT M. 01/14/2013 08:42PM
Re: Salt water vs. fresh Don Thomas 01/17/2013 02:29AM
Re: Salt water vs. fresh ROBERT M. 01/17/2013 03:38AM
Re: Salt water vs. fresh SnakeDoc 01/17/2013 09:10AM
Re: Salt water vs. fresh SnakeDoc 01/17/2013 09:49AM
Re: Salt water vs. fresh SnakeDoc 03/18/2013 03:20PM
Re: Salt water vs. fresh ROBERT M. 03/18/2013 09:20PM
Re: Salt water vs. fresh Ken Dunn 01/17/2013 11:03AM


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