Ship monitoring system, ship monitoring method, and information processing device

A ship monitoring method performed by a ship monitoring system, the method comprising:

• generating, by a first data generator of the ship monitoring system, first ship data indicative of a position and a velocity of a first ship;
• generating, by a second data generator of the ship monitoring system, second ship data indicative of a position and a velocity of a second ship;
• calculating, by processing circuitry of the ship monitoring system, a risk value indicative of a risk of a collision between the first ship and the second ship based on the first ship data and the second ship data;
• generating, by the processing circuitry of the ship monitoring system, a discontinuous sound pattern with an interval according to the risk value;
• and
• controlling, by the processing circuitry of the ship monitoring system, an alarm to sound according to the discontinuous sound pattern,
• wherein the method further comprises:
• determining, by the processing circuitry, a meeting relationship between the first ship and the second ship based on the first ship data and the second ship data, and
• changing, by the processing circuitry, a mode of the discontinuous sound pattern according to the meeting relationship,
• wherein the discontinuous sound pattern includes, in one cycle, a set period where there is one or more discontinuous sounds, and a silent period where there is no discontinuous sound, and
• wherein the method further comprises changing, by the processing circuitry, a number of the one or more discontinuous sounds included in the set period according to the meeting relationship.

An information processing device, comprising:

• processing circuitry configured to:
• calculate a risk value indicative of a risk of a collision between a first ship and a second ship based on first ship data indicative of a position and a velocity of the first ship, and second ship data indicative of a position and a velocity of the second ship, and
• generate a discontinuous sound pattern with an interval according to the risk value, and
• an alarm configured to sound an alarm according to the discontinuous sound pattern,
• wherein the processing circuitry:
• determines a meeting relationship between the first ship and the second ship based on the first ship data and the second ship data, and
• changes a mode of the discontinuous sound pattern according to the meeting relationship,
• wherein the discontinuous sound pattern includes, in one cycle, a set period where there is one or more discontinuous sounds, and a silent period where there is no discontinuous sound, and
• wherein the processing circuitry changes a number of the one or more discontinuous sounds included in the set period according to the meeting relationship.