Station keeping and waypoint tracking methods
First Claim
1. A method for controlling movement of a marine vessel powered by a marine propulsion system commanded by a control module, the method being carried out by the control module and comprising:
- controlling a propulsion device of the marine propulsion system so as to automatically maneuver the marine vessel along a track including a series of waypoints;
determining whether a next waypoint in the series of waypoints is a predetermined stopover waypoint at or near which the marine vessel is to electronically anchor;
in response to determining that the next waypoint is the predetermined stopover waypoint, calculating a distance between the marine vessel and the predetermined stopover waypoint;
in response to the calculated distance being less than or equal to a threshold distance, decreasing a magnitude of thrust of the propulsion device;
in response to sensing that the marine vessel has thereafter slowed to a first threshold speed, controlling the marine propulsion system to further decrease vessel speed; and
in response to sensing that one of (a) the marine vessel has thereafter slowed to a second threshold speed that is less than the first threshold speed or (b) the calculated distance has thereafter begun to increase, controlling the propulsion device so as to maintain the marine vessel at an anchor point that is at or near the predetermined stopover waypoint.
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Accused Products
Abstract
A method for controlling movement of a marine vessel includes controlling a propulsion device to automatically maneuver the vessel along a track including a series of waypoints, and determining whether the next waypoint is a stopover waypoint at or near which the vessel is to electronically anchor. If the next waypoint is the stopover waypoint, a control module calculates a distance between the vessel and the stopover waypoint. In response to the calculated distance being less than or equal to a threshold distance, the propulsion device'"'"'s thrust is decreased. In response to sensing that the vessel thereafter slows to a first threshold speed, the vessel'"'"'s speed is further reduced. In response to sensing that the vessel thereafter slows to a second, lower threshold speed or passes the stopover waypoint, the propulsion device is controlled to maintain the vessel at an anchor point that is at or near the stopover waypoint.
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Citations
22 Claims
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1. A method for controlling movement of a marine vessel powered by a marine propulsion system commanded by a control module, the method being carried out by the control module and comprising:
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controlling a propulsion device of the marine propulsion system so as to automatically maneuver the marine vessel along a track including a series of waypoints; determining whether a next waypoint in the series of waypoints is a predetermined stopover waypoint at or near which the marine vessel is to electronically anchor; in response to determining that the next waypoint is the predetermined stopover waypoint, calculating a distance between the marine vessel and the predetermined stopover waypoint; in response to the calculated distance being less than or equal to a threshold distance, decreasing a magnitude of thrust of the propulsion device; in response to sensing that the marine vessel has thereafter slowed to a first threshold speed, controlling the marine propulsion system to further decrease vessel speed; and in response to sensing that one of (a) the marine vessel has thereafter slowed to a second threshold speed that is less than the first threshold speed or (b) the calculated distance has thereafter begun to increase, controlling the propulsion device so as to maintain the marine vessel at an anchor point that is at or near the predetermined stopover waypoint. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for controlling movement of a marine vessel, the system comprising:
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a marine propulsion system including a marine propulsion device; a control module that controls a magnitude of thrust, a shift position, and a steering angle of the marine propulsion device; an electronic navigation device that provides to the control module a desired track including a series of waypoints, wherein the series of waypoints includes a stopover waypoint at or near which the marine vessel is to electronically anchor; and a position determination device that provides to the control module a current, actual geographic location of the marine vessel as the marine vessel navigates the desired track under the command of the control module; wherein, in response to determining that the marine vessel has reached a threshold distance from the stopover waypoint, the control module commands the marine propulsion device'"'"'s magnitude of thrust to decrease; wherein, in response to sensing that the marine vessel has thereafter slowed to a first threshold speed, the control module commands the marine propulsion system to further decrease vessel speed; and wherein, in response to sensing that one of (a) the marine vessel has thereafter slowed to a second threshold speed that is less than the first threshold speed or (b) a distance between the marine vessel and the stopover waypoint has thereafter begun to increase, the control module controls at least one of the magnitude of thrust, the shift position, and the steering angle of the marine propulsion device so as to maintain the marine vessel at an anchor point that is at or near the stopover waypoint. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification