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INSTRUMENTED LOCK ENTRY AND TRAVERSING SYSTEM

  • US 20050090971A1
  • Filed: 03/04/2004
  • Published: 04/28/2005
  • Est. Priority Date: 06/20/2003
  • Status: Active Grant
First Claim
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1. A navigational aid for watercraft navigating a waterway comprising:

  • one or more sensors for determining the position of said watercraft with respect to nearby landmarks; and

    a feedback device for updating a pilot of said watercraft as to said position.

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