Technology and Operations  
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Re: Unintentional surface breech (broach) after torpedo launch
Posted by: ROBERT M. ()
Date: September 08, 2012 12:11AM

SnakeDoc, et al:

When the boat launches torpedoes, the breech doors are wide open, allowing seawater
to flood the tubes. The flooded seawater weighs more than the launched torpedo, correct? So how does the u-boat broach? IMO, the boat was very light, out of trim
well before the torpedo launches. And the CO could have slowed his advance during
launches. U.S. boats have a WRT (water round torpedo) tank to take care of this
excess water, which allows them to reload the tubes. When the tube is ready to
launch a torpedo, seawater is blown from the WRT tank to the torpedo tube, in order
to equalize the tube with sea pressure so the outer doors can be opened. This is
how trim is maintained during launches.

Does anyone have another explanation?

Have a nice day,

ROBERT M.

Options: ReplyQuote


Subject Written By Posted
Unintentional surface breech after torpedo launch NEEBLAMMERS 09/07/2012 09:20AM
Re: Unintentional surface breech after torpedo launch SnakeDoc 09/07/2012 10:12AM
Re: Unintentional surface breech (broach) after torpedo launch ROBERT M. 09/08/2012 12:11AM
Re: Unintentional surface breech (broach) after torpedo launch SnakeDoc 09/08/2012 08:20AM
Re: Unintentional surface breech (broach) after torpedo launch ROBERT M. 09/10/2012 08:44AM
Re: Unintentional surface breech (broach) after torpedo launch SnakeDoc 09/10/2012 09:25AM
Re: Unintentional surface breech (broach) after torpedo launch ROBERT M. 09/10/2012 09:48AM


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