[PSUBS-MAILIST] forum

["David Bartsch" <dbartsch2236@hotmail.com>]

Hi,
  In my past I was stationed aboard a fleet ballistic submarine (a 41 for 
freedom boat) and made thirteen deterent patrols. Even years later, I think 
back at how incredible that ship really was and how great my time aboard her 
was. I was so lucky.
  I have spent some twelve years researching a small passive sonar with a 
solidly mounted array. It can train around and listen and detect small 
pleasure craft and other acoustics such as fish and biologically produced 
sounds. It uses a fraction of the power required for depth sounders and can 
be easily built from easy to aquire components. I designed it as primarily a 
collision avoidance sonar, but am so impressed with the outcome that I will 
utilize it as the primary sonar system abard my under construction ambient 
sub.
 In 2004, an award was presented to a fellow submariner reguarding his 
sonar ideas...I would love to review his notes. I too would be willing to 
share my discoveries with anyone interested as it will open a whole new 
world to anyone willing to take the trip.
 On May 6th, I will complete the project that has competed for funds with 
the sub...A ten foot two staged rocket with video camera.                    
                           David Bartsch

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