Vessel navigation system and navigation method thereof

A vessel navigation system, comprising:

• a data transceiver configured to receive a sailing path;
• a processor connected to the data transceiver, wherein the processor comprises a path navigator, the path navigator is configured to generate a course control command and a speed control command by configuring the sailing path in accordance with a navigation method;
• a direction controller connected to the processor, wherein the direction controller is configured to control a direction of a vessel according to the course control command;
• and
• a propeller module connected to the processor, wherein the propeller module is configured to control a speed of the vessel according to the speed control command;
• wherein the navigation method comprises:
• (a) driving a vessel to sail along a sailing path, the sailing path comprising at least two nodes, wherein the at least two nodes comprise a first node and a second node being connected by a first line segment;
• (b) generating a first tracking point on the first line segment when a distance between the vessel and the first node being less than a first length, and driving the vessel to sail according to the first tracking point, wherein the first tracking point is away from the first node by a second length;
• (c) generating a second tracking point on the first line segment when a distance between the vessel and the first tracking point being less than the first length, and driving the vessel to sail according to the second tracking point, wherein the second tracking point is away from the first tracking point by the second length;
• and
• (d) repeating the step (b) and step (c) until the vessel passes through each node;
• wherein the first length is twice as much as a length between perpendiculars (LPP) of the vessel, and the second length is triple as much as the perpendiculars (LPP) of the vessel.