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Methods for controlling movement of a marine vessel near an object

  • US 10,259,555 B2
  • Filed: 08/25/2016
  • Issued: 04/16/2019
  • Est. Priority Date: 08/25/2016
  • Status: Active Grant
First Claim
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1. A method for controlling movement of a marine vessel near an object, the marine vessel being propelled by thrust generated by a marine propulsion system according to commands from a controller, the method comprising:

  • accepting, with the controller, a signal representing a desired movement of the marine vessel from a desired movement operational section;

    resolving the desired movement of the marine vessel into a target linear thrust and a target moment about a preselected point on the marine vessel;

    determining a magnitude and a direction of a thrust vector of the marine propulsion system that will result in achievement of the target linear thrust and the target moment about the preselected point on the marine vessel;

    sensing, with a sensor, a shortest distance between the object and the marine vessel and a direction of the object with respect to the marine vessel; and

    with the controller, comparing the shortest distance between the object and the marine vessel to a predetermined range;

    wherein in response to the marine vessel being within the predetermined range of the object, the controller automatically nullifies any vector components of the thrust vector that would otherwise cause net thrust in the direction of the object.

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