Server, method, and computer program for deriving optimal ship route

Abstract

The optimal route derivation server, which derives an optimal route for a ship, includes: a storage unit, which matches and stores ocean data including wind, wave height, and ocean current for each time and position included in operation data for each operation obtained from an automatic identification device installed on the ship; a corrected ship speed derivation unit, which derives a first corrected ship speed by eliminating the influence of ocean current from the speed of the ship for each operation, and derives a second corrected ship speed that takes into account the influence of wind at each position for the first corrected ship speed, and a third corrected ship speed that takes into account the influence of waves at each position for the first corrected ship speed; a speed reduction curve derivation unit, which derives a first speed reduction curve due to wind and a second speed reduction curve due to waves based on the basic speed of the ship, the second corrected ship speed, and the third corrected ship speed; and a route determination unit, which derives an optimal route for the ship by using a ship speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied.

Description

[Technical field]

[0001] The present invention relates to a server, a method, and a computer program for deriving an optimal ship route. [Background technology]

[0002] The Speed ​​Reduction Algorithm (SRA) is used to analyze the reduction in ship speed due to the influence of weather factors and current factors, and to calculate the ship's position.

[0003] The ship speed reduction algorithm is also used to evaluate ship performance speed. To calculate ship performance speed, a method is used to analyze the speed down curve for the entire voyage, which calculates how much the ship speed is affected by weather and ocean current factors.

[0004] That is, the vessel speed reduction algorithm is used to calculate the vessel performance speed and the vessel position, which are the main information for determining the vessel's route. At this time, the accuracy of the vessel speed reduction curve is the key to accurately calculating the vessel performance speed and the vessel position.

[0005] Regarding a technology for analyzing the speed of a ship and providing a ship's route, Korean Patent No. 10-2006925, which is a prior art, discloses a ship route and speed determining device, a ship route and speed determining method, and a recording medium.

[0006] Conventionally, although the degree of influence of wind, waves, and ocean currents varies for each individual ship, a fixed speed reduction curve was uniformly reflected in the recommended route for each ship. In other words, instead of a speed reduction curve for an individual ship, a speed reduction curve for a ship type or a sister ship (same ship type or fleet) was adjusted to a predetermined ratio and used, and therefore an optimal recommended route that reflected the sailing characteristics of each ship could not be provided.

[0007] In addition, in the past, it was not possible to obtain a ship's position and navigation information without receiving an operation report for each individual ship via the shipping company, so there was no choice but to use an algorithm that was not significantly different from the existing speed reduction algorithm.

[0008] As described above, the conventional method has a drawback in that the accuracy of the optimum recommended route for a ship is low since the actual sailing characteristics of each individual ship cannot be reflected. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] International Publication No. 2021 / 106096 Summary of the Invention [Problem to be solved by the invention]

[0010] The objective of the present invention is to provide a server, method and computer program that matches and stores marine data including wind, wave height and ocean currents for each time and position contained in operation data for each operation obtained from an automatic identification system installed on a ship.

[0011] The objective of the present invention is to provide a server, method, and computer program that derive a first corrected ship speed that eliminates the influence of ocean currents from the ship speed for each operation, derive a second corrected ship speed that eliminates the influence of ocean currents from the first corrected ship speed, derive a second corrected ship speed that takes into account the influence of wind at each position into the first corrected ship speed, and derive a third corrected ship speed that takes into account the influence of waves at each position into the first corrected ship speed.

[0012] The objective of the present invention is to provide a server, a method and a computer program that derive a first speed reduction curve due to wind and a second speed reduction curve due to waves based on a ship's basic speed, a second corrected ship speed and a third corrected ship speed, and derive an optimal route for the ship using a ship speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied.

[0013] However, the technical problems to be solved by this embodiment are not limited to those described above, and other technical problems may exist. [Means for solving the problem]

[0014] As a technical means for solving the above-mentioned technical problem, one embodiment of the present invention may provide an optimal route derivation server including: a storage unit that matches and stores ocean data including wind, wave height, and ocean current for each time and position included in operation data for each operation acquired from an automatic identification system installed on a ship; a corrected ship speed derivation unit that derives a first corrected ship speed by excluding an influence of ocean current from the speed of the ship for each operation, and derives a second corrected ship speed that takes into account an influence of wind at each position on the first corrected ship speed, and a third corrected ship speed that takes into account an influence of waves at each position on the first corrected ship speed; a speed reduction curve derivation unit that derives a first speed reduction curve due to wind and a second speed reduction curve due to waves based on the basic speed of the ship, the second corrected ship speed, and the third corrected ship speed; and a route determination unit that derives an optimal route for the ship using a ship speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied.

[0015] In another embodiment of the present invention, there may be provided an optimal route derivation method including the steps of: matching and storing ocean data including wind, wave height and ocean current for each time and position included in operation data for each operation acquired from an automatic identification system installed on a ship; deriving a first corrected ship speed by excluding an influence of ocean current from the speed of the ship for each operation, deriving a second corrected ship speed by taking into account an influence of wind at each position on the first corrected ship speed, and a third corrected ship speed by taking into account an influence of waves at each position on the first corrected ship speed; deriving a first speed reduction curve due to wind and a second speed reduction curve due to waves based on the basic speed of the ship, the second corrected ship speed and the third corrected ship speed; and deriving an optimal route for the ship using a ship speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied.

[0016] In yet another embodiment of the present invention, a computer program may be provided that includes a sequence of instructions stored on a computer-readable recording medium, the sequence of instructions including: matching and storing oceanographic data including wind, wave height, and ocean current for each time and position included in operation data for each operation acquired from an automatic identification system installed on a ship; deriving a first corrected ship speed by excluding an influence of ocean current from the speed of the ship for each operation; deriving a second corrected ship speed by considering an influence of wind at each position on the first corrected ship speed, and a third corrected ship speed by considering an influence of waves at each position on the first corrected ship speed; deriving a first speed reduction curve due to wind and a second speed reduction curve due to waves based on a base speed of the ship, the second corrected ship speed, and the third corrected ship speed; and deriving an optimal route for the ship by using a ship speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied.

[0017] The above-mentioned means for solving the problems are merely examples and should not be construed as limiting the present invention. In addition to the above-mentioned exemplary embodiments, there may be additional embodiments described in the drawings and the detailed description of the invention. Effect of the Invention

[0018] According to any one of the means for solving the problems of the present invention described above, by matching and storing oceanographic data including wind, wave height, and ocean current for each time and position contained in the operation data for each operation obtained from an automatic identification device installed on the ship, it is possible to provide a server, method, and computer program that provide an optimal route taking into account the operation characteristics of each ship by matching the operation data, which is easy to collect and use due to the large amount of information, with location-based oceanographic data.

[0019] It is possible to provide a server, method and computer program that derive a first corrected ship speed that eliminates the effects of ocean currents from the ship speed for each operation, and derive a second corrected ship speed that takes into account the effects of wind at each position on the first corrected ship speed, and a third corrected ship speed that takes into account the effects of waves.

[0020] A server, method and computer program can be provided that derives a first speed reduction curve due to wind and a second speed reduction curve due to waves based on the ship's basic speed, a second corrected ship speed and a third ship speed, and derives an optimal route for the ship using a ship speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied, thereby deriving an optimal route using a unique speed reduction curve that takes into account the ship's operating characteristics. [Brief description of the drawings]

[0021] [Figure 1] FIG. 2 is a configuration diagram of an optimum route derivation server according to an embodiment of the present invention. [Diagram 2] 4 is an exemplary diagram for explaining a process of deriving a first speed reduction curve according to an embodiment of the present invention; FIG. [Diagram 3]11 is an exemplary diagram for explaining a process of deriving a second speed reduction curve according to an embodiment of the present invention. FIG. [Figure 4] 4 is a flowchart of a method for deriving an optimum route for a ship executed in an optimum route derivation server according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, the embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. In the drawings, in order to clearly explain the present invention, parts that are not related to the description are omitted, and similar parts are designated by similar reference numerals throughout the specification.

[0023] Throughout the specification, when a part is said to be "connected" to another part, this includes not only when it is "directly connected" to another part, but also when it is "electrically connected" to another part via another element in between. Furthermore, when a part is said to "include" a certain component, this should be understood to mean that it can further include other components, not excluding other components, unless otherwise specified to the contrary, and does not preclude the presence or possibility of addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0024] In this specification, the term "module" includes a unit realized by hardware, a unit realized by software, and a unit realized by using both. Also, one unit may be realized by using two or more pieces of hardware, and two or more units may be realized by one piece of hardware.

[0025] In this specification, some of the operations and functions described as being performed by a terminal or device may instead be performed by a server connected to the terminal or device. Similarly, some of the operations and functions described as being performed by a server may instead be performed by a terminal or device connected to the server.

[0026] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0027] FIG. 1 is a configuration diagram of an optimal route derivation server according to an embodiment of the present invention. Referring to FIG. 1, the optimal route derivation server 100 may include a storage unit 110, a corrected ship speed derivation unit 120, a speed reduction curve derivation unit 130, and a route determination unit 140. Here, the optimal route derivation server 100 derives a second corrected ship speed considering the influence of wind and a third corrected ship speed considering the influence of waves from the ship speed for each operation, and based on this, derives a first speed reduction curve for wind and a second speed reduction curve due to waves, thereby deriving an optimal route for the ship using a ship speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied. Hereinafter, a process of deriving an optimal route for the ship through each unit of the optimal route derivation server 100 will be described.

[0028] The storage unit 110 may store oceanographic data including wind, wave height, and ocean current for each time and position included in the operation data for each operation acquired from an Automatic Identification System (AIS) installed on the ship, by matching the data. Here, the AIS is an automatic tracking system using a transceiver installed on the ship, and is mainly used in ship traffic services. For example, the AIS can prevent collisions between ships at sea by having a satellite detect the AIS signature of the ship. Such an AIS may display, for example, the ship's name, position, speed, ship type, expected time of departure, expected time of arrival at the port of entry, etc. The operation data may include the ship's position, course, speed, etc. for each operation.

[0029] The corrected vessel speed derivation unit 120 may derive a first corrected vessel speed that eliminates the influence of ocean currents from the vessel speed for each operation. The corrected vessel speed derivation unit 120 may calculate the first corrected vessel speed based on the following formula 1, for example.

[0030] First corrected ship speed = SOG (Speed ​​of Ground) - [Current Factor] (Equation 1)

[0031] Referring to Equation 1, the speed of a ship on the water (SOG) may refer to the speed of the ship on the sea measured by a satellite. The current factor refers to the value of the ocean current that the ship encounters during its route, and by analyzing the ocean current at each position along the ship's route, the effect of the ocean current on the ship at each position can be understood. Such an ocean current can be, for example, V current Here, the reason for deriving the first corrected vessel speed by removing the effect of ocean currents from the vessel speed is to analyze only the effect of wind and waves on the vessel speed.

[0032] The corrected ship speed derivation unit 120 may derive a second corrected ship speed that takes into account the influence of wind at each position on the first corrected ship speed, and a third corrected ship speed that takes into account the influence of waves at each position on the first corrected ship speed.

[0033] The speed reduction curve derivation unit 130 may derive a first speed reduction curve for wind and a second speed reduction curve for waves based on the basic ship speed, the second corrected ship speed, and the third corrected ship speed. Here, the process of deriving the first speed reduction curve and the second speed reduction curve will be described in detail with reference to FIGS. 2 and 3.

[0034] 2 is an exemplary diagram illustrating a process of deriving a first speed reduction curve according to an embodiment of the present invention. Referring to FIG. 2, the corrected vessel speed deriving unit 120 may derive a second corrected vessel speed 200 based on the wind direction and wind speed at each position.

[0035] For example, the corrected ship speed derivation unit 120 may calculate the wind speed 201 (W p The corrected vessel speed deriving unit 120 may derive the second corrected vessel speed 200 according to the wind direction 202 (Wind's angle on the bow) and the wind speed 201 (Wind's angle on the bow). For example, when the wind direction 202 is 0° and the wind speed 201 is 50 kn, the corrected vessel speed deriving unit 120 may derive the second corrected vessel speed 200 as 80 kn. In another example, when the wind direction 202 is 180° and the wind speed 201 is 20 kn, the corrected vessel speed deriving unit 120 may derive the second corrected vessel speed 200 as 103 kn.

[0036] The speed reduction curve derivation unit 130 may derive a first speed reduction curve 210 for the wind based on the base speed of the vessel and the second corrected vessel speed 200. For example, the speed reduction curve derivation unit 130 may derive the first speed reduction curve 210 including a ratio 211 of the first corrected vessel speed to the base speed of the vessel (e.g., 100 kn) for each wind direction 203.

[0037] 3 is an exemplary diagram illustrating a process of deriving a second speed reduction curve according to an embodiment of the present invention. Referring to FIG. 3, the corrected vessel speed deriving unit 120 may derive a third corrected vessel speed 300 based on the wave direction and wave height at each position.

[0038] For example, the corrected vessel speed derivation unit 120 may derive the third corrected vessel speed 300 according to the wave height 301 and the wave direction 302. For example, when the wave direction 302 is 0° and the wave height 301 is 10h, the corrected vessel speed derivation unit 120 may derive the third corrected vessel speed 300 as 40kn. In another example, when the wave direction 302 at the bow is 180° and the wave height 301 is 4h, the corrected vessel speed derivation unit 120 may derive the third corrected vessel speed 300 as 96kn.

[0039] The speed reduction curve derivation unit 130 may derive a second speed reduction curve 310 for a wave based on the base speed of the vessel and the third corrected vessel speed 300. For example, the speed reduction curve derivation unit 130 may derive the second speed reduction curve 310 including a ratio 311 of the first corrected vessel speed to the base speed of the vessel (e.g., 100 kn) for each wave direction 303.

[0040] Returning again to FIG. 1, the route determination unit 140 may derive an optimal route for the vessel using a vessel speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied.

[0041] The route determination unit 140 may derive a priority order of influence for the first speed reduction curve and the second speed reduction curve through a comparison between the second corrected vessel speed and the third corrected vessel speed at each position. For example, the route determination unit 140 may derive a priority order of influence for the first speed reduction curve and the second speed reduction curve based on whether the vessel speed is affected by wind or waves through a comparison between the second corrected vessel speed and the third corrected vessel speed at each position.

[0042] For example, the route determination unit 140 may derive a priority order of the influence of the first speed reduction curve and the second speed reduction curve for each of multiple navigation sections, or may derive a priority order of the influence of the first speed reduction curve and the second speed reduction curve for all navigation sections.

[0043] The route determination unit 140 may derive an optimal route for the vessel using a vessel speed reduction algorithm to which either the first speed reduction curve or the second speed reduction curve is applied based on the derived priority order of the influence degree. For example, when the derived priority order of the influence degree is, for example, the first speed reduction curve > the second speed reduction curve, the route determination unit 140 can derive an optimal route for the vessel using a vessel speed reduction algorithm to which the first speed reduction curve is applied, since the influence of wind on the vessel speed is greater than that of waves. In another example, when the derived priority order of the influence degree is, for example, the second speed reduction curve > the first speed reduction curve, the influence of waves on the vessel speed is greater than that of wind, so the route determination unit 140 can derive an optimal route for the vessel using a vessel speed reduction algorithm to which the second speed reduction curve is applied.

[0044] In yet another example, the route determination unit 140 may derive an optimal route for each voyage section using a ship speed reduction algorithm that applies either a first speed reduction curve or a second speed reduction curve for each voyage section.

[0045] For example, if the first speed reduction curve has a higher impact priority than the second speed reduction curve for a first voyage section, the route determination unit 140 may derive an optimal route for the first voyage section using a ship speed reduction algorithm that applies the first speed reduction curve, and if the second speed reduction curve has a higher impact priority than the first speed reduction curve for a second voyage section, the route determination unit 140 may derive an optimal route for the second voyage section using a ship speed reduction algorithm that applies the second speed reduction curve.

[0046] The storage unit 110 may update the first speed reduction curve and the second speed reduction curve for each operation. For example, when the first speed reduction curve and the second speed reduction curve are derived by the speed reduction curve derivation unit 130 every time operation data acquired through the operation of the ship is stored, the storage unit 110 updates the first speed reduction curve and the second speed reduction curve, thereby providing an optimized route for the ship and improving the accuracy of the optimal route.

[0047] As a result, the present invention uses operation data generated through the actual operation of a ship without receiving an operation report of the ship from a shipping company, and has the advantage of being applicable to various ships by utilizing the large amount of data and easy collection and use.In addition, the present invention has the advantage of being highly usable because it can be freely integrated and matched with location-based global ocean data.

[0048] The optimum route derivation server 100 may be executed by a computer program stored in a medium including a sequence of commands for deriving an optimum route for a ship. When executed by a computing device, the computer program may include a sequence of commands for matching and storing oceanographic data including wind, wave height, and ocean current for each time and position included in operation data for each operation acquired from an automatic identification device installed on the ship, deriving a first corrected ship speed by removing the influence of ocean current from the speed of the ship for each operation, deriving a second corrected ship speed by considering the influence of wind at each position on the first corrected ship speed, and a third corrected ship speed by considering the influence of waves at each position on the first corrected ship speed, deriving a first speed reduction curve for wind and a second speed reduction curve for waves based on the basic speed of the ship, the second corrected ship speed, and the third corrected ship speed, and deriving an optimum route for the ship using a ship speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied.

[0049] Fig. 4 is a flowchart of a method for deriving an optimum ship route executed in an optimum route derivation server according to one embodiment of the present invention. Referring to Fig. 4, the method for deriving an optimum ship route executed in the optimum route derivation server 100 includes steps that are processed in a time series manner according to the embodiment shown in Figs. 1 to 3. Therefore, even if the content is omitted below, it also applies to the method for deriving an optimum ship route executed in the optimum route derivation server 100 according to the embodiment shown in Figs. 1 to 3.

[0050] In step S410, the optimal route derivation server 100 may match and store oceanographic data including wind, wave height, and ocean current for each time and position included in the operation data for each operation obtained from an automatic identification device installed on the ship.

[0051] In step S420, the optimal route derivation server 100 may derive a first corrected ship speed that eliminates the effects of ocean currents from the ship speed for each operation, and may derive a second corrected ship speed that takes into account the effects of wind at each position on the first corrected ship speed, and a third corrected ship speed that takes into account the effects of waves at each position on the first corrected ship speed.

[0052] In step S430, the optimum route derivation server 100 may derive a first speed reduction curve due to wind and a second speed reduction curve due to waves based on the basic ship speed, the second corrected ship speed and the third corrected ship speed.

[0053] In step S440, the optimum route derivation server 100 may derive an optimum route for the vessel using a vessel speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied.

[0054] In the above description, steps S410 to S440 may be further divided into additional steps or combined into fewer steps depending on the embodiment of the present invention. Also, some steps may be omitted as necessary, and the order of steps may be changed.

[0055] The method of deriving an optimum route for a ship, which is executed in the optimum route derivation server described in Figures 1 to 4, may be embodied in the form of a computer program stored in a medium executed by a computer or a recording medium including instructions executable by a computer. Also, the method of deriving an optimum route for a ship, which is executed in the optimum route derivation server described in Figures 1 to 4, may be embodied in the form of a computer program stored in a medium executed by a computer.

[0056] A computer-readable medium may be any available medium that can be accessed by a computer, including both volatile and nonvolatile media, and both separate and non-separate media. A computer-readable medium may also include computer storage media, including both volatile and nonvolatile, separate and non-separate media embodied in any method or technology for storage of information, such as computer-readable instructions, data structures, program modules, or other data.

[0057] The above description of the present invention is for illustrative purposes only, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and are not limiting. For example, each component described as a single type may be implemented in a distributed form, and similarly, each component described as a distributed type may be implemented in a combined form.

[0058] The scope of the present invention is indicated by the claims set forth below rather than by the above detailed description, and all modifications and variations derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included within the scope of the present invention.

Claims

1. An optimal route derivation server for deriving an optimal route for a ship, a storage unit that matches and stores oceanographic data including wind, wave height, and ocean current for each time and position included in operation data for each operation acquired from an automatic identification system installed on the ship; a corrected ship speed derivation unit that derives a first corrected ship speed by eliminating the influence of ocean currents from the ship speed for each operation, and derives a second corrected ship speed by adding the first corrected ship speed to the influence of wind at each position, and a third corrected ship speed by adding the first corrected ship speed to the influence of waves at each position; a speed reduction curve deriving unit that derives a first speed reduction curve due to wind and a second speed reduction curve due to waves based on the basic speed of the ship, the second corrected ship speed, and the third corrected ship speed; a route determination unit that derives an optimal route for the ship using a ship speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied; An optimum route derivation server comprising:

2. the corrected ship speed deriving unit derives the second corrected ship speed based on a wind direction and a wind speed at each of the positions, and derives the third corrected ship speed based on a wave direction and a wave height at each of the positions.

2. The optimum route calculation server according to claim 1 .

3. the speed reduction curve derivation unit derives the first speed reduction curve including a ratio of the first corrected vessel speed to a basic vessel speed for each wind direction and for each wind speed, and derives the second speed reduction curve including a ratio of the first corrected vessel speed to a basic vessel speed for each wave direction and for each wave height.

2. The optimum route calculation server according to claim 1 .

4. the route determination unit derives a priority order of influence on the first speed reduction curve and the second speed reduction curve through a comparison between the second corrected vessel speed and the third corrected vessel speed at each of the positions; deriving an optimal route for the vessel using a vessel speed reduction algorithm that applies either the first speed reduction curve or the second speed reduction curve based on the derived priority order of the impact degree; 2. The optimum route calculation server according to claim 1 .

5. The storage unit updates the first speed reduction curve and the second speed reduction curve for each flight.

2. The optimum route calculation server according to claim 1 .

6. The navigation data includes at least one of a position, a course, and a speed of the vessel for each of the navigation operations; 2. The optimum route calculation server according to claim 1 .

7. A method for deriving an optimal ship route in an optimal route derivation server, comprising: matching and storing oceanographic data including wind, wave height, and ocean current for each time and position included in navigation data for each navigation acquired from an automatic identification system installed on the ship; deriving a first corrected ship speed by removing the influence of ocean currents from the ship speed for each operation, deriving a second corrected ship speed by adding the first corrected ship speed to the influence of wind at each position, and deriving a third corrected ship speed by adding the first corrected ship speed to the influence of waves at each position; deriving a first speed reduction curve due to wind and a second speed reduction curve due to waves based on the base speed of the vessel, the second corrected vessel speed, and the third corrected vessel speed; deriving an optimal route for the vessel using a vessel speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied; An optimum route deriving method comprising:

8. The step of deriving the corrected vessel speed comprises: deriving the second corrected vessel speed based on a wind direction and a wind speed at each of the positions; and deriving the third corrected vessel speed based on wave direction and wave height at each of the positions.

8. The optimum route deriving method according to claim 7.

9. The step of deriving the speed degradation curve comprises: deriving the first speed reduction curve including a ratio of the first corrected vessel speed to the base vessel speed for each wind direction and wind speed; and deriving the second speed reduction curve including a ratio of the first corrected vessel speed to the base speed of the vessel for each wave direction and wave height.

8. The optimum route deriving method according to claim 7.

10. The step of deriving the optimal route includes: deriving an influence priority for the first speed reduction curve and the second speed reduction curve through a comparison between the second corrected vessel speed and the third corrected vessel speed at each of the positions; and deriving an optimal route for the vessel using a vessel speed reduction algorithm that applies either the first speed reduction curve or the second speed reduction curve based on the derived priority of the impact degree.

8. The optimum route deriving method according to claim 7.

11. updating the first speed reduction curve and the second speed reduction curve for each flight; 8. The optimum route deriving method according to claim 7.

12. The navigation data includes at least one of a position, a course, and a speed of the vessel for each of the navigation operations; 8. The optimum route deriving method according to claim 7.

13. A computer program stored on a computer readable recording medium including a sequence of instructions for deriving an optimal route for a ship, the computer program comprising: The computer program, when executed by a computing device, Match and store oceanographic data including wind, wave height, and ocean current for each time and position included in the operation data for each operation acquired from the automatic identification system installed on the ship; deriving a first corrected ship speed by removing the influence of ocean currents from the ship speed for each operation, deriving a second corrected ship speed by adding the first corrected ship speed to the influence of wind at each position, and deriving a third corrected ship speed by adding the first corrected ship speed to the influence of waves at each position; deriving a first speed reduction curve for wind and a second speed reduction curve for waves based on the base speed of the vessel, the second corrected vessel speed, and the third corrected vessel speed; a sequence of commands for deriving an optimal route for the vessel using a vessel speed reduction algorithm to which the first speed reduction curve or the second speed reduction curve is applied; 2. A computer program stored on a computer-readable recording medium.

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