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Vessel location system

  • US 4,345,462 A
  • Filed: 01/31/1980
  • Issued: 08/24/1982
  • Est. Priority Date: 01/19/1978
  • Status: Expired due to Term
First Claim
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1. Sea compass apparatus comprising;

  • longitude indicator means,latitude indicator means,means for driving each indicator means in one direction or the other,and control means for controlling said driving means including means responsive to vessel speed and vessel direction,said means responsive to vessel direction including means for registering the direction of travel of the vessel and enabling said drive means to drive the indicator means in a direction of longitude and latitude corresponding to the direction of travel,said means for registering the direction of travel of the vessel including means for registering the direction of travel of the vessel in a decimal notation demarcating a position within one of the four quadrants, and means responsive to said decimal notation for driving one of said north and south motor means and one of said east and west motor means at a speed that is a function of the position in the active quadrant.

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