Ship system, display device, and ship program

Abstract

To provide a vessel system, a display device, and a vessel program capable of predicting an index value for environmental conservation.SOLUTION: A vessel system 100 includes a calculation unit 13 for calculating a value for an index based on numerical performance for environmental conservation. Therefore, the calculation unit 13 is capable of calculating an index value for environmental conservation based on navigating track record of the past. Here, the calculation unit 13 predicts and calculates an index value for a second period T2 when a prescribed period has a first period T1 from a starting point to the present and a second period T2 from the present to an ending point. Thus, the calculation unit 13 is capable of predicting the index value for a prescribed period for this time by predicting and calculating the index value regarding the second period T2 which is the future portion in the prescribed periods for carrying out calculation for the index value. Due to the above, the index value for the environmental conservation is capable of being predicted.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a ship system, a display device, and a ship program. [Background technology]

[0002] A conventional ship system is known, as described in Patent Document 1. This ship system predicts the fuel efficiency of a ship based on past fuel consumption records. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-10984 Summary of the Invention [Problem to be solved by the invention]

[0004] In some cases, indicators are applied that are ranked based on numerical performance for environmental conservation. For example, an indicator related to regulations called the Carbon Intensity Indicator (CII) may be applied to reduce greenhouse gas emissions. Such indicators are ranked over a predetermined unit time period, such as one year. To obtain a desired rank, it is necessary to predict the value of the indicator.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a ship system, a display device, and a ship program that are capable of predicting the value of an index for environmental conservation. [Means for solving the problem]

[0006] The ship system of the present invention comprises a calculation unit that calculates the value of an index based on numerical performance for environmental conservation, and an information acquisition unit that acquires performance information regarding the ship's voyage performance.The calculation unit calculates the value of the index for a predetermined period, with the predetermined period being the unit of time.If the predetermined period includes a first period from the start point to the present, and a second period from the present to the end point, the calculation unit predicts and calculates the value of the index for the predetermined period including the second period.

[0007] The ship system includes an information acquisition unit that acquires performance information regarding the ship's voyage performance, and a calculation unit that calculates the value of an index for environmental conservation based on numerical performance. Therefore, the calculation unit can calculate the value of an index for environmental conservation based on past voyage performance. Here, if the specified period includes a first period from the start point to the present and a second period from the present to the end point, the calculation unit predicts and calculates the value of the index for the specified period including the second period. In this way, the calculation unit can predict the value of the index for the current specified period by predicting and calculating the value of the index for the second period, which is the future part of the specified period for which the value of the index is calculated. From the above, the value of the index for environmental conservation can be predicted.

[0008] The calculation unit may calculate at least one of the index value and the index rank information from the ship's sailing conditions. In this case, the calculation unit can calculate what ship's sailing conditions should be set to satisfy the target index rank by appropriately changing the ship's sailing conditions.

[0009] The calculation unit may automatically set rank information of the index for a predetermined period and calculate the value of the index, thereby enabling the calculation unit to perform calculations using appropriate rank information of the index that can be realized.

[0010] The calculation unit may set rank information for the target index set by the user and calculate the value of the index, thereby enabling the calculation unit to determine whether the index according to the user's request is feasible, and if so, to calculate the navigation conditions for achieving the index.

[0011] The calculation unit may perform calculations using at least the ship speed during the second time period as the sailing conditions of the ship. In this case, the calculation unit can calculate what ship speed should be used during the second time period to achieve a desired index rank.

[0012] The calculation unit may perform calculations using at least sea state rank information, which classifies sea states into multiple ranks, as the ship's navigation conditions. Because the load on the ship when sailing varies depending on the sea state rank, sea states are navigation conditions that affect CO2 emissions. Therefore, by having the calculation unit perform calculations taking into account the sea state rank information, the index value can be calculated accurately.

[0013] The calculation unit may perform calculations that include at least seasonal information as navigation conditions. Because the load on a ship when sailing varies depending on the season, the season is a navigation condition that affects CO2 emissions. Therefore, by having the calculation unit perform calculations taking seasonal information into account, the index value can be calculated accurately.

[0014] The display device according to the present invention displays at least one of the calculation results of the ship system and information used in the calculations.

[0015] The display device according to the present invention can visually display information for calculating index values ​​and calculation results to the user.

[0016] The ship program of the present invention includes a calculation step for calculating the value of an index based on numerical performance for environmental conservation, and an information acquisition step for acquiring performance information regarding the ship's voyage performance.In the calculation step, the value of the index for a predetermined period is calculated, with the predetermined period being used as a unit of time.If the predetermined period has a first period from the start point to the present, and a second period from the present to the end point, the calculation step predicts and calculates the value of the index for the predetermined period including the second period.

[0017] According to the ship program of the present invention, it is possible to obtain the same functions and effects as the ship system described above. [Effects of the Invention]

[0018] According to the present invention, it is possible to provide a ship system, a display device, and a ship program that are capable of predicting the value of an index for environmental conservation. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a block diagram illustrating a ship system according to an embodiment of the present invention. [Figure 2] 1 is a schematic diagram showing a ship sailing; [Figure 3] FIG. 10 is a conceptual diagram for explaining the ranking of CII. [Figure 4] FIG. 10 is a diagram showing a screen for selecting a calculation mode of the calculation unit. [Figure 5] FIG. 2 is a diagram illustrating an example of a screen displayed by a display device. [Figure 6] FIG. 2 is a schematic diagram for explaining the calculation content of a calculation unit. [Figure 7] FIG. 2 is a diagram illustrating an example of a screen displayed by a display device. [Figure 8] FIG. 2 is a schematic diagram for explaining the calculation content of a calculation unit. [Figure 9] FIG. 2 is a diagram illustrating an example of a screen displayed by a display device. [Figure 10] FIG. 2 is a diagram illustrating an example of a screen displayed by a display device. [Figure 11] FIG. 2 is a diagram illustrating an example of a screen displayed by a display device. [Figure 12] 4 is a flowchart showing processing steps of the ship system according to the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same or corresponding parts will be designated by the same reference numerals, and duplicated explanations will be omitted.

[0021] FIG. 1 is a block diagram showing a ship system 100 according to an embodiment of the present invention. The ship system 100 is a system installed on a ship 150 (see FIG. 2). However, some or all of the ship system 100 does not necessarily have to be installed on board the ship, and may be installed on land. For example, a minimum amount of data may be transmitted from the ship to land, and calculations may be performed on land. Here, the ship system 100 calculates the value of an index based on numerical performance for environmental conservation and calculates a rank for the index. As such an index, an index related to regulations called the Carbon Intensity Indicator (CII) for reducing greenhouse gas emissions is adopted.

[0022] The CII index and ranking will be explained with reference to Figure 3. First, a CII calculation value is calculated for each ship based on the CII Index Guidelines. A calculation method is set for each type of ship. For example, for bulk carriers, tankers, container ships, gas carriers, LNG carriers, general cargo ships, reefer carriers, and combined vessels, the CII value is calculated by "CO2 emissions / (DWT x voyage distance)". DWT indicates the maximum summer load draft, and the value in the "Supplement" of the IEE certificate is used. For cruise ships, car carriers, or RO-PAX ferries, the CII value is calculated by "CO2 emissions / (gross tonnage x voyage distance)". Next, the CII reference line (average CII value) is calculated. The CII reference line is calculated by the "CII ref =a·Capacity -c " The coefficients a and c are determined according to the type of ship. "Capacity" is the value used in the DWT portion of the CII calculation formula mentioned above.

[0023] Next, the CII standard value is calculated. The CII standard value is calculated as follows: CII standard value = ((100-Z) / 100) x CII ref "Z" indicates the reduction rate (%) from the CII reference line for each ship type. The reduction rate (Z%) will be applied from 2023, starting from 5%, and is expected to increase by 2% each year until 2026, and will continue to increase thereafter.

[0024] As shown in Figure 3, the CII reference value is determined by the reduction rate (Z%) from the CII reference line. Rankings A to E are determined based on this CII reference value. Specifically, thresholds d1 to d4 for each rank are set for the CII reference value, and ships are divided into ranks A to E based on the thresholds d1 to d4. These CII reference values ​​and thresholds d1 to d4 for each rank are set according to the type of ship. By calculating the CII calculation value for the ship 150 to be evaluated and comparing the CII calculation value with the CII reference value and thresholds d1 to d4, it is possible to determine the rank information for the ship 150 to be evaluated.

[0025] The configuration of the ship system 100 will be described. The ship system 100 is installed, for example, on a ship. However, some or all of the ship system 100 does not necessarily have to be installed on the ship, and may be installed on land. As shown in FIG. 1 , the ship system 100 includes an input device 2, a display device 3, and a computing device 10.

[0026] The input device 2 is a user interface for a user to input various information to the arithmetic device 10. The input device 2 is composed of input devices such as a keyboard, a touch panel, a mouse, and a microphone. The display device 3 is a user interface for displaying various information to the user based on signals from the arithmetic device 10. The display device 3 is composed of an output device such as a monitor.

[0027] The arithmetic device 10 is a device that performs various calculations for route evaluation. The arithmetic device 10 includes a processor, a memory, a storage, and a communication interface, and is configured as a general computer. The processor is a computing device such as a CPU (Central Processing Unit). The memory is a storage medium such as a ROM (Read Only Memory) or a RAM (Random Access Memory). The storage is a storage medium such as an HDD (Hard Disk Drive). The communication interface is a communication device that realizes data communication. The processor controls the memory, storage, and communication interface, and realizes the functions of the arithmetic device 10, which will be described later. The arithmetic device 10 realizes various functions, for example, by loading a program stored in the ROM into the RAM and executing the program loaded into the RAM by the CPU. The arithmetic device 10 may be composed of multiple computers. The arithmetic device 10 includes an information acquisition unit 11, a selection unit 12, a calculation unit 13, and a storage unit 16.

[0028] The information acquisition unit 11 acquires a reference value for ranking an index (the above-mentioned CII) based on numerical performance for environmental conservation. The information acquisition unit 11 acquires a CII reference value and thresholds d1 to d4 based on the type of ship 150. The information acquisition unit 11 also acquires various information necessary for the calculations described below by the calculation unit 13. The information acquisition unit 11 acquires performance information related to the voyage performance of the ship 150. The information acquisition unit 11 also acquires information related to various voyage conditions of the ship 150. The information acquisition unit 11 may acquire the various information from input information of the input device 2, may acquire the information from the memory unit 16, or may automatically acquire the information from sensors installed on the ship 150. A more detailed description of the information acquired by the information acquisition unit 11 will be given later.

[0029] The selection unit 12 selects the content of the calculation by the calculation unit 13. Here, the display device 3 displays a screen as shown in FIG. 4 as a screen for selecting the content of the calculation by the calculation unit 13. As shown in FIG. 5, at least three tabs are displayed selectably on the screen. "Current CII" is a mode for calculating values ​​related to the current index (CII), comparing them with past data, and displaying the contents. "CII estimation from voyage" is a mode for inputting the contents of a future voyage and predicting the index (CII). "Voyage estimation from target rating" is a mode for predicting the contents of an expected future voyage from the rank of the target CII. The selection unit 12 selects one of the three tabs corresponding to the tab specified by the user.

[0030] The memory unit 16 stores information for performing various processes in the ship system 100. For example, the memory unit 16 may store CII reference values ​​and threshold values ​​corresponding to each ship type. The memory unit 16 also stores a ship program P.

[0031] The calculation unit 13 calculates the value of an index (CII) based on numerical performance for environmental conservation. The calculation unit 13 calculates the value of the index for a predetermined period, with the predetermined period being the unit of time. For example, a period of "one year" is set as the predetermined period. In the following explanation, the start point of the predetermined period may be set to "January 1st," the end point of the predetermined period to "December 31st," and the current predetermined period may be referred to as "this year." The calculation unit 13 calculates the value of the index for the predetermined period and calculates the rank of the index. However, the length of the predetermined period is not particularly limited and may be set arbitrarily.

[0032] The calculation unit 13 calculates at least one of the index value and the index rank information from the navigation conditions of the ship 150. The calculation unit 13 automatically sets the rank of the index for a predetermined period and calculates the index value. Alternatively, the calculation unit 13 sets a target index rank set by the user and calculates the index value. The calculation unit 13 may perform calculations that include at least the ship speed during the second period T2 as the navigation conditions of the ship 150. The calculation unit 13 may perform calculations that include at least sea state rank information (Beaufort scale) that divides sea states into multiple ranks as the navigation conditions of the ship 150. The calculation unit 13 may perform calculations that include at least seasonal information as the navigation conditions. The calculation unit 13 may also set many other navigation conditions and perform calculations, but these other navigation conditions will be described later.

[0033] As shown in FIG. 2, the predetermined period may include a first period T1 from the start point to the present, and a second period T2 from the present to the end point. In this state, the rank of the index for this year has not been determined because the voyage for this year has not yet been completed. The calculation unit 13 predicts and calculates the value of the index for the predetermined period including the second period T2, which is the remaining period of this year. Note that for the previous year and earlier, data on the voyage performance for the entire year exists, so the rank of the index for each year can be determined.

[0034] The following describes a case where the calculation unit 13 performs calculations related to the "Current CII" mode (see FIG. 4). In this case, the display device 3 displays a screen such as that shown in FIG. 5. In this mode, the calculation unit 13 calculates the index values ​​and progress of the index ranks based on the navigation performance for the first period T1 of this year, and visualizes and displays them on the display device 3 together with past data. The "CII" graph at the top of the screen displays the index values ​​and index ranks for two years ago (dash-dotted line), one year ago (dashed line), and this year (solid line) in chronological order. The "Annual CO2 emission" graph shows the annual CO2 emissions. The "Annual Sailed distance" graph shows the annual sailed distance. The "Final CII estimate from past year date" table displays the current index prediction values ​​and prediction ranks based on one year ago and two years ago. In the table, "Estimated final CII" is entered as the value of the indicator on the last day of the period, calculated by proportionally calculating the final value against the corresponding date of the previous year. "Estimated final CII rating" is entered as the rank of the indicator as of the last day of the period, calculated from the calculated value of "Estimated final CII."

[0035] Next, a case where the calculation unit 13 performs calculations related to the "CII estimation from voyage" mode (see FIG. 4) will be described. For example, the calculation unit 13 sets "navigating at a fixed vessel speed" as the content of a future voyage and predicts the index (CII) for the second period T2. As shown in FIG. 6(a), assume that the current vessel 150 is at its current position CP. If 200 days have passed since the start of this year's voyage, the number of remaining voyage days this year is "365 - 200 = 165 days." Here, the faster the vessel speed, the greater the fuel consumption per voyage distance. Therefore, the faster the fixed vessel speed, the lower the rank of the index. Therefore, by using the calculation unit 13, it is possible to calculate and predict at what value the vessel speed should be fixed for the voyage in order to achieve the set rank of the index.

[0036] The calculation unit 13 knows the CO2 emissions and the voyage distance for the first period T1 up to today. Therefore, it can calculate how much emissions need to be reduced and how long the voyage should be for the remaining days of the second period T2 to achieve the set index rank. Therefore, the calculation unit 13 can calculate the index rank corresponding to each ship speed by preparing multiple ship speeds and calculating the emissions when sailing for the number of days of the second period T2 at each speed to calculate the index value.

[0037] Here, as shown in Figure 6(b), if the navigation route for the second period T2 (shown by the two-dot chain line) is known, the ship will have to stop at ports PT2 and PT3, and the time other than the stop time will be considered as the navigation time. Therefore, the calculation unit 13 calculates the index value after determining the stopping time and navigation time. The calculation unit 13 also performs calculations using, as the navigation conditions of the ship 150, at least sea state rank information, which classifies sea states into multiple ranks. Sea states are phenomena that occur at sea and can affect the operation of the ship 150. Examples of sea state information include wind speed, wave height, and ocean currents. The calculation unit 13 classifies sea states into multiple sea state ranks based on the sea state information and classifies the navigation conditions by sea state rank. When sailing on a route with a high sea state rank (e.g., a route with high wind speed), CO2 emissions will vary even at the same ship speed. The calculation unit 13 also takes into account the fuel efficiency of each auxiliary engine when calculating the index value.

[0038] FIG. 7 shows the input screen displayed on the display device 3 when the calculation unit 13 performs calculations in this mode. "Sailing information" in FIG. 7 is a table showing information on various voyage conditions corresponding to multiple ship speeds. The number of ship speed columns may be increased. "Sailing time (day)" indicates the number of days of sailing, and is a variable input box with an initial input of 0. "Loaded voyage rate (%)" indicates the loaded voyage rate, and is a variable input box with an initial input of 50. "Ballast voyage rate (%)" indicates the ballast voyage rate, and is automatically input according to the loaded voyage rate. "Estimated BF scale" indicates the estimated Beaufort scale (wind scale), and is a variable select box with an initial input of BF=0. "Fuel type (M / E)" indicates the fuel type (main engine), and is a variable select box with an initial input of HFO. "Estimated A / E Fuel consumption (ton / day)" shows the estimated auxiliary fuel consumption, and the initial input is the auxiliary fuel consumption during navigation, and it is a variable input box. "Fuel type (A / E)" shows the fuel type (auxiliary), and the initial input is HFO, and it is a variable select box.

[0039] "Porting information" in Figure 7 is a table showing berthing information corresponding to multiple cases. Note that the number of cases may be increased further. "Porting time (day)" indicates the number of days of berthing, and the initial input is 0, and it is a variable input box. "Estimated A / E Fuel consumption (ton / day)" indicates the estimated auxiliary fuel consumption, and the initial input for Case 1 is the A / E fuel consumption when berthing, the initial input for Case 2 is the A / E fuel consumption when unloading, and for Case 3 it is 0, and it is a variable input box. "Fuel type (A / E)" indicates the fuel type (auxiliary), and the initial input is HFO, and it is a variable select box. "Estimated Boiler Fuel consumption (ton / day)" indicates the estimated boiler fuel consumption, and the initial input for Case 1 is the boiler fuel consumption when berthing, the initial input for Case 2 is the boiler fuel consumption when unloading, and for Case 3 it is 0, and it is a variable input box. "Fuel type (Boiler)" indicates the fuel type (Boiler), and the initial input is HFO, and it is a variable select box. The "FOC margin (%)" table in Figure 7 has an initial input of 5, and it is a variable box.

[0040] 7 as input information, and calculates the index for the second period T2. First, the calculation unit 13 calculates the predicted CO2 emissions by calculating and adding up the following equation (1) for the navigation information. Predicted CO2 emissions = (Sailing time) x (Loaded voyage rate) x (Main engine power output read from the Loaded Power curve for the selected BF) x (FOCR for the selected fuel read from the FOC curve) x 24 x (CO2 conversion factor for the selected fuel) + (Sailing time) x (Ballast voyage rate) x (Main engine output read from Ballast's Power curve at the selected BF) x (FOCR of the selected fuel read from the FOC curve) x 24 x (CO2 conversion factor of the selected fuel) …(1)

[0041] Furthermore, the calculation unit 13 calculates the predicted CO2 emissions amount by calculating and summing the following equation (2) for the berthing information. Predicted CO2 emissions = (Porting time) x (Estimated A / E Fuel consumption) x 24 x 1000000 x (CO2 conversion factor for selected A / E fuel) + (Porting time) x (Estimated boiler fuel consumption) x 24 x 1000000 x (CO2 conversion factor for selected boiler fuel) …(2)

[0042] The calculation unit 13 calculates and sums the sailing information by "(Sailing time) x (Ship speed) x 24" to obtain the predicted sailing distance. As a result, by calculating the following formula (3), it is possible to calculate the predicted index value for the entire period including the second period T2. Expected CII= ((Sailing CO2 emissions)+(PortingCO2 emissions)+(Elapsed annual CO2 emissions))x(100%+FOCmargin) / ((Current annual cruising range) + (Expected cruising distance)) / DWT … (3)

[0043] Next, a case where the calculation unit 13 performs calculations related to the "Voyage estimation from target rating" mode (see FIG. 4) will be described. For example, the calculation unit 13 sets the content of the future voyage as "navigating with a fixed voyage distance" and predicts the index (CII) for the second period T2. As shown in FIG. 8, assume that the current ship 150 is at its current position CP. If 300 days have passed since the start of this year's voyage, the number of remaining voyage days for this year is "365 - 300 = 65 days." The calculation unit 13 predicts the value of the index when the route RT is determined. That is, the calculation unit 13 sets the voyage conditions for arriving at port PT4 via the route RT within 65 days of the second period T2 and calculates the value and rank of the index. At this time, when the target index is ranked, the calculation unit 13 determines whether it is possible to navigate at that rank and calculates the ship speed at that time.

[0044] 9 to 11 show input screens displayed by the display device 3 when the calculation unit 13 performs calculations in this mode. "Target CII rating" in FIG. 9 indicates the rank of the target index, with the initial input being B, and is a variable select box. "Estimated future sailing distance in this year (NM)" indicates the predicted future sailing distance this year, with the initial input being 0, and is a variable input box. "Loaded voyage rate (%)" indicates the loaded voyage rate, with the initial input being 50, and is a variable input box. "Estimated BF scale" indicates the predicted Beaufort scale (wind force scale), with the initial input being BF0 (scale rank 0), and is a variable select box. "Fuel type (M / E)" indicates the fuel type (main engine), with the initial input being HFO, and is a variable select box. "Estimated A / E Fuel consumption at sailing (ton / day)" shows the estimated auxiliary engine fuel consumption (when at anchor), and the initial input for Case 1 is the auxiliary engine fuel consumption when at anchor, and is a variable input box. "Fuel type (A / E)" shows the fuel type (auxiliary engine), and the initial input is HFO, and is a variable select box. "Estimated Boiler Fuel consumption at porting (ton / day)" shows the estimated boiler fuel consumption, and the initial input for Case 1 is the boiler fuel consumption when at anchor, and is a variable input box. "Fuel type (Boiler)" shows the fuel type (boiler), and the initial input is HFO, and is a variable select box. "FOC margin (%)" shows the fuel consumption margin, and the initial input is 5, and is a variable input box.

[0045] When input is completed on the input screen of FIG. 9 and the "Calculation" button is pressed, the display device 3 displays the screen shown in FIG. 10. In the table on the top side, "Calculated date" indicates the date and time of calculation. "Estimated CII value" indicates the predicted final CII (value of index). "Estimated CII rating" indicates the predicted final CII rank (rank of index). "Current CII value" indicates the intermediate CII (value of index) at the date and time of calculation. "Current CII rating" indicates the intermediate CII rank (rank of index) at the date and time of calculation.

[0046] The table in the lower part of Figure 10 shows the threshold for each rank in the "CII boundary" corresponding to the CII rank (rank of the index). The threshold for rank A of CII is the CII at the boundary between rank A and rank B at the date and time of calculation. The threshold for rank B of CII is the CII at the boundary between rank B and rank C at the date and time of calculation. The threshold for rank C of CII is the CII at the boundary between rank C and rank D at the date and time of calculation. The threshold for rank C of CII is the CII at the boundary between rank C and rank D at the date and time of calculation. The threshold for rank D of CII is the CII at the boundary between rank D and rank E at the date and time of calculation.

[0047] The calculation unit 13 calculates the target CII value by back-calculating from the target CII rank. The calculation unit 13 calculates the amount of CO2 that can be emitted by back-calculating from the current navigation distance and the estimated navigation distance using equation (4). Potential CO2 emissions = (target CII x DWT x ((current annual voyage distance) + (future voyage distance)) - (current annual CO2 emissions)) / (100% + FOC margin) ... (4)

[0048] The calculation unit 13 calculates the predicted ship speed by performing a reverse calculation using the following equation (5). If it is difficult to find an exact solution, the calculation unit 13 finds an approximate solution. If the calculation unit 13 cannot find a solution, it determines that it is impossible. Amount of CO2 that can be emitted = (Future voyage distance / Ship speed / 24) x (Loaded voyage rate) x (Main engine output read from the Loaded power curve at the selected BF based on ship speed) x (FOCR of the selected fuel as read from the FOC curve) x 24 x (CO2 conversion factor of the selected fuel) + (Future voyage distance / Ship speed / 24) x (Ballast voyage rate) x (Main engine output read from the Ballast power curve based on ship speed at the selected BF) x (FOCR of the selected fuel as read from the FOC curve) x 24 x (CO2 conversion factor of the selected fuel) + (Remaining Time - Future Voyage Distance / Shipspeed / 24) x (Estimated A / E Fuel Consumption) x 24 x 1,000,000 x (CO2 Conversion Factor for Selected A / E Fuel) + (Remaining period - Future voyage distance / Shipspeed / 24) x (Estimated boiler fuel consumption) x 24 x 1,000,000 x (CO2 conversion factor for selected boiler fuel) …(5)

[0049] When input is completed on the input screen of Figure 9 and the "Calculation" button is pressed, the display device 3 displays the screen shown in Figure 11 as the calculation results of the above equations (4) and (5). "Calculated date" indicates the date and time when the calculation was performed. "Possibility" indicates the possibility of calculation, and indicates whether the calculation was possible or not. "Estimated Ship Speed" indicates the predicted ship speed. "Sailing time" indicates the date and time of sailing, and the number of days of the remaining period when the ship will be sailing. "Porting time" indicates the date and time of porting, and the number of days of porting time when the ship will be ported, and the number of days of the remaining period when the ship will be ported. "Current CII value" indicates the intermediate CII as of the date and time when the calculation was performed. "Current CII rating" indicates the intermediate CII rank as of the date and time when the calculation was performed.

[0050] Next, the ship system and ship program P according to this embodiment will be described with reference to FIG. 12. The processing shown in FIG. 12 is implemented by causing a computer to execute the ship program P. FIG. 12 is a flowchart showing the processing of the ship system 100 according to this embodiment. As shown in FIG. 12, the display device 3 displays a screen for a user to input various information (step S10). The information acquisition unit 11 acquires various information for calculating the index value and the index rank (step S20: information acquisition step). The information acquisition unit 11 may acquire information entered on the input screen, or may acquire information stored in the memory unit 16. Next, the calculation unit 13 calculates the index value based on the numerical performance for environmental conservation (step S30: calculation step). In the calculation step S30, the index value for the second period T2 is predicted and calculated. Next, the display device 3 displays the calculation result (step S40). This completes the processing shown in FIG. 12.

[0051] Next, the functions and effects of the ship system 100, the display device 3, and the ship program P according to this embodiment will be described.

[0052] The ship system 100 of this embodiment is equipped with a calculation unit 13 that calculates the value of an index based on numerical performance for environmental conservation, and an information acquisition unit 11 that acquires performance information regarding the voyage performance of the ship 150.The calculation unit 13 calculates the value of the index for a predetermined period, with the predetermined period being the unit of time.If the predetermined period has a first period T1 from the start point to the present, and a second period T2 from the present to the end point, the calculation unit 13 predicts and calculates the value of the index for the predetermined period including the second period T2.

[0053] The ship system 100 includes an information acquisition unit 11 that acquires performance information regarding the voyage performance of the ship 150, and a calculation unit 13 that calculates the value of an index for environmental conservation based on numerical performance. Therefore, the calculation unit 13 can calculate the value of an index for environmental conservation based on past voyage performance. Here, if the predetermined period includes a first period T1 from the start point to the present and a second period T2 from the present to the end point, the calculation unit 13 predicts and calculates the value of the index for the predetermined period including the second period T2. In this way, the calculation unit 13 can predict the value of the index for the current predetermined period by predicting and calculating the value of the index for the second period T2, which is the future portion of the predetermined period for which the index value is calculated. From the above, the value of the index for environmental conservation can be predicted.

[0054] The calculation unit 13 may calculate at least one of the index value and the index rank information from the navigation conditions of the ship 150. In this case, the calculation unit 13 can calculate what navigation conditions of the ship should be set to meet the target index rank by appropriately changing the navigation conditions of the ship.

[0055] The calculation unit 13 may automatically set rank information of the index for a predetermined period and calculate the index value, thereby enabling the calculation unit 13 to perform calculations using appropriate rank information of the index that can be realized.

[0056] The calculation unit 13 may set rank information for the target index set by the user and calculate the value of the index. This allows the calculation unit 13 to determine whether the index according to the user's request is feasible, and if it is feasible, to calculate the navigation conditions for achieving it.

[0057] The calculation unit 13 may perform calculations that include at least the ship speed during the second period T2 as the sailing conditions of the ship 150. In this case, the calculation unit 13 can calculate what ship speed should be used during the second period T2 to achieve a desired index rank.

[0058] The calculation unit 13 may perform calculations using at least sea state rank information, which classifies sea states into multiple ranks, as the navigation conditions of the ship 150. Sea states are navigation conditions that affect CO2 emissions, because the load on the ship 150 when sailing differs depending on the sea state rank. Therefore, by having the calculation unit 13 perform calculations taking into account the sea state rank information, the index value can be calculated accurately.

[0059] The calculation unit 13 may perform calculations that include at least seasonal information as navigation conditions. Because the load on the ship 150 when sailing varies depending on the season, the season is a navigation condition that affects CO2 emissions. Therefore, by having the calculation unit 13 perform calculations taking seasonal information into account, the index value can be calculated accurately.

[0060] The display device 3 according to this embodiment displays at least one of the calculation results of the ship system 100 described above and information used in the calculations.

[0061] The display device 3 according to this embodiment can visually display information for calculating index values ​​and calculation results to the user.

[0062] The ship program P of this embodiment includes a calculation step S30 that calculates the value of an index based on numerical performance for environmental conservation, and an information acquisition step S20 that acquires performance information regarding the voyage performance of the ship 150.In the calculation step S30, the value of the index for a predetermined period is calculated, with the predetermined period being used as the unit of time.If the predetermined period has a first period from the start point to the present, and a second period from the present to the end point, the calculation step S30 predicts and calculates the value of the index for the predetermined period including the second period T2.

[0063] According to the ship program P of the present invention, it is possible to obtain the same functions and effects as the above-mentioned ship system.

[0064] The present invention is not limited to the above-described embodiments.

[0065] For example, in FIGS. 5 to 11, examples of the contents displayed by the display device 3 and the route have been described, but these are merely examples and may be changed as appropriate. [Explanation of symbols]

[0066] 11...information acquisition unit, 13...calculation unit, 100...ship system, P...ship program.

Claims

1. a calculation unit that calculates a value of CII, which is an index based on numerical performance for environmental conservation; an information acquisition unit that acquires performance information regarding the voyage performance of the ship; The calculation unit calculates a value of the CII, which is the index, for a predetermined period of time, with the predetermined period being a unit of time; When the predetermined period has a first period from a start point to a present time and a second period from the present time to an end point, The calculation unit predicts and calculates the value of the CII, which is the index, for the specified period including the second period.

2. The ship system according to claim 1 , wherein the calculation unit calculates at least one of a value of the index CII and rank information of the index CII from the sailing conditions of the ship.

3. A ship system as described in Claim 2, wherein the calculation unit performs calculations using at least seasonal information as the navigation conditions.

4. A ship system as described in claim 2 or 3, wherein the calculation unit performs calculations using at least sea state rank information that divides sea states into multiple ranks as the navigation conditions of the ship.

5. The ship system according to any one of claims 1 to 4, wherein the calculation unit automatically sets rank information of the index CII for the specified period and calculates the value of the index CII.

6. The ship system according to any one of claims 1 to 5, wherein the calculation unit sets rank information of the CII, which is the index of the user's goal, and calculates the value of the CII, which is the index.

7. The ship system according to any one of claims 1 to 6, wherein the calculation unit performs calculations using at least the ship speed during the second period as the sailing conditions of the ship.

8. A display device that displays at least one of the calculation results of the ship system according to any one of claims 1 to 7 and information used in the calculation.

9. a calculation step of calculating a value of CII, which is an index based on numerical performance for environmental conservation; an information acquisition step of acquiring performance information relating to the voyage performance of the ship; In the calculation step, a value of the CII, which is the index, is calculated for a predetermined period of time as a unit of time; When the predetermined period has a first period from a start point to a present time and a second period from the present time to an end point, In the calculation step, the value of the CII, which is the index, for the specified period including the second period is predicted and calculated.

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