WO2014188584A1 - 船舶管理装置、船舶管理システム及びプログラム - Google Patents
船舶管理装置、船舶管理システム及びプログラム Download PDFInfo
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- WO2014188584A1 WO2014188584A1 PCT/JP2013/064479 JP2013064479W WO2014188584A1 WO 2014188584 A1 WO2014188584 A1 WO 2014188584A1 JP 2013064479 W JP2013064479 W JP 2013064479W WO 2014188584 A1 WO2014188584 A1 WO 2014188584A1
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- navigation
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B49/00—Arrangements of nautical instruments or navigational aids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B79/00—Monitoring properties or operating parameters of vessels in operation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/08—Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
Definitions
- the present invention relates to a technique for supporting efficient navigation.
- Patent document 1 refers to a database based on data obtained from a tank test in which the amount of drainage and trim of a ship are variously changed, and a navigation system that calculates the amount of water poured into a ballast tank so that the trim of an actual ship is optimized Is described.
- an object of the present invention is to make it possible to specify navigation conditions that can exhibit higher navigation performance than when a ship navigates under predetermined navigation conditions.
- the present invention provides a first navigation condition indicating a navigation condition of a ship including at least a basic condition related to navigation of the ship and an inclination of the ship, and a navigation performance of the ship corresponding to the first navigation condition.
- An acquisition means for acquiring the data a specifying means for specifying the navigation performance associated with the first navigation condition whose basic condition matches a predetermined navigation condition based on the first data, and the specifying means.
- a ship management device including output means for outputting a first navigation condition corresponding to a higher navigation performance among the specified navigation performances as second data.
- the basic condition includes at least one of weather, sea conditions, hull dirt, draft, ship speed, fuel consumption, horsepower, and rotation speed, and the navigation performance is determined by ship speed.
- a configuration that includes at least one of fuel consumption, horsepower, and fuel consumption and that does not overlap with the basic conditions may be adopted.
- the first data is provided for each of a plurality of different ships or ship types, and the specifying means corresponds to the ship or ship type given as the predetermined navigation condition.
- a configuration for specifying the fuel consumption amount based on the first data may be employed.
- the ship management apparatus which concerns on this invention WHEREIN The structure provided with the correction
- the ship management apparatus which concerns on this invention WHEREIN The structure provided with a display means to display said 2nd data as information of a character or an image may be employ
- the present invention also provides a ship management system comprising the ship management apparatus and a communication device that is mounted on the ship and transmits third data indicating the predetermined navigation conditions to the ship management apparatus.
- the present invention provides a computer with a first navigation condition indicating a navigation condition of a ship including at least a basic condition relating to navigation of the ship and an inclination of the ship, and a navigation performance of the ship corresponding to the first navigation condition.
- Acquisition means for acquiring first data indicating: and specifying means for specifying the navigation performance associated with the first navigation condition in which the basic condition matches a predetermined navigation condition based on the first data;
- a program for causing the first navigation condition corresponding to higher navigation performance among the navigation performance specified by the specifying means to function as output means for outputting as second data is provided.
- Block diagram showing the hardware configuration of the monitoring device Diagram illustrating the data structure of condition data
- Block diagram showing the functional configuration of the control unit The flowchart which shows the process which the control part of a monitoring apparatus performs Diagram showing an example of condition data
- the figure which illustrates the information displayed on a display part The figure which shows the whole structure of a ship management system Block diagram showing the hardware configuration of the monitoring device
- the figure which illustrates the information displayed on a display part Diagram illustrating the data structure of condition data Diagram illustrating the data structure of condition data
- FIG. 1 is a block diagram showing a hardware configuration of a monitoring apparatus 100 according to an embodiment of the present invention.
- the monitoring device 100 is mounted on a ship such as a cargo ship, and is a device for notifying a user (operator or the like) of a state when the ship navigates.
- the monitoring device 100 can be realized by a general personal computer, for example.
- the monitoring device 100 includes a control unit 110, a storage unit 120, an input unit 130, an operation unit 140, and a display unit 150.
- the control unit 110 is a means for controlling the operation of each unit of the monitoring device 100.
- the control unit 110 includes an arithmetic processing device such as a CPU (Central Processing Unit) and a memory, and executes display control by the display unit 150 and calculations necessary for the display by executing a predetermined program.
- arithmetic processing device such as a CPU (Central Processing Unit) and a memory
- the storage unit 120 is a means for storing data.
- the storage unit 120 includes a recording medium such as a hard disk or a flash memory, and stores data used by the control unit 110.
- the storage unit 120 can store a program executed by the control unit 110 and a navigation condition DB (database).
- the navigation condition DB is a database that records, for each navigation condition, a navigation condition that is a condition related to the navigation of the ship and a fuel consumption amount when the ship navigates under the navigation condition.
- a navigation condition that is a condition related to the navigation of the ship and a fuel consumption amount when the ship navigates under the navigation condition.
- data about a ship on which the monitoring device 100 is mounted is recorded. Therefore, the data recorded in the navigation condition DB is different for each ship or ship type (that is, the type of ship).
- the data stored in the navigation condition DB corresponds to an example of “first data” in the present invention.
- FIG. 2 is a diagram showing a data structure of data recorded in the navigation condition DB.
- the navigation condition DB includes a combination of three types of navigation conditions of “trim”, “draft” and “ship speed”, and “fuel consumption” when the ship navigates under these navigation conditions. Is recorded. That is, the navigation conditions in this embodiment are trim, draft, and ship speed.
- the trim refers to the difference between the bow draft and the stern draft, and is positive when the bow draft is larger than the stern draft (front trim), and negative when the stern draft is larger than the bow draft (rear trim). Is the value.
- the draft is the vertical distance from the bottom of the ship to the surface of the water.
- the draft is the average value of the draft at the bow and the stern draft.
- the ship speed refers to the speed of the ship, and here it is assumed to be the ground speed (however, it may be the water speed).
- the navigation condition DB fuel consumption under various navigation conditions is recorded.
- the navigation condition DB describes the fuel consumption in each case where the trim is changed by 0.5 m, the draft is changed by 1 m, and the boat speed is changed by 1 knot.
- the data recorded in the navigation condition DB is determined in advance based on a tank test using a model ship, values actually measured during past voyages, and the like.
- individual data constituting the navigation condition DB that is, data indicating a combination of trim, draft, ship speed, and fuel consumption is referred to as “condition data”.
- the navigation conditions included in the condition data are referred to as “first navigation conditions”.
- the input unit 130 and the operation unit 140 are means for receiving data input.
- the input unit 130 includes an interface for communicating with a measurement device mounted on the ship, and acquires data indicating navigation conditions from the connected measurement device.
- the operation unit 140 includes input devices such as a mouse and a keyboard, and supplies data corresponding to a user operation to the control unit 110.
- the display unit 150 is a means for displaying information.
- the display unit 150 includes a display device such as a liquid crystal display, and displays information (characters or images) corresponding to image data supplied from the control unit 110.
- the display unit 150 may include means for reproducing sound (such as a speaker), and may output information not only visually but also auditorily.
- FIG. 3 is a block diagram showing a functional configuration of the control unit 110.
- the control unit 110 can realize functions corresponding to the acquisition unit 111, the identification unit 112, the output unit 113, and the correction unit 114 illustrated in FIG. In other words, the control unit 110 can function as a ship management apparatus according to the present invention by executing the program.
- the acquisition unit 111 is a unit that acquires condition data.
- the acquisition unit 111 acquires condition data from the navigation condition DB stored in the storage unit 120. Note that the acquisition unit 111 does not have to acquire all the condition data included in the navigation condition DB, and only acquires the necessary condition data.
- the specifying unit 112 is a unit that specifies the navigation performance when the ship navigates under predetermined navigation conditions.
- the specifying unit 112 sequentially acquires data indicating the navigation conditions of the vessel being navigated, and specifies the fuel consumption at that time based on the data and the condition data acquired by the acquiring unit 111.
- the fuel consumption corresponds to an example of an index indicating the navigation performance.
- the specifying unit 112 specifies the fuel consumption amount at a predetermined time interval (for example, every minute).
- the specifying unit 112 acquires data indicating the navigation conditions of the vessel that is navigating via the input unit 130 or the operation unit 140.
- the data acquired at this time is referred to as “input data”.
- the input data is actually measured values of navigation conditions.
- the input data may be directly input from a measuring device mounted on the ship, or may be input by an input device after the user visually confirms the measuring device or the like.
- the output means 113 is means for outputting monitoring data.
- the monitoring data refers to data indicating the navigation conditions of the vessel being navigated and information relating to the fuel consumption of the vessel as character or image information.
- the output unit 113 outputs monitoring data as image data and supplies it to the display unit 150.
- the monitoring data corresponds to an example of “second data” in the present invention.
- the correction means 114 is a means for correcting the condition data included in the navigation condition DB.
- the correcting unit 114 corrects the condition data based on the actual measurement value.
- the correction unit 114 corrects the condition data as necessary when the relationship between the navigation conditions indicated by the condition data and the fuel consumption is different from the actual relationship. Note that the value of the corrected condition data may be calculated by the control unit 110 or may be input by the user using the input device.
- the configuration of the monitoring device 100 is as described above. Under this configuration, the monitoring apparatus 100 sequentially acquires input data indicating navigation conditions such as trim, draft, and ship speed while navigating the ship, and compares the input data with the condition data to give various information to the user. provide. In the present embodiment, the monitoring device 100 identifies the trim that minimizes the fuel consumption when sailing at the ship speed and draft given by the input data, thereby contributing to the fuel consumption saving (ie, reduction). Can be provided to the user. In other words, in the present embodiment, the monitoring device 100 specifies the trim that makes the ship speed and the draft unchanged, and minimizes the fuel consumption under the condition that these are constant.
- the navigation conditions that are unchanged among the first navigation conditions are referred to as “basic conditions”.
- the navigation condition to be specified that is, the navigation condition that is variable among the first navigation conditions
- variable condition is referred to as “variable condition”.
- FIG. 4 is a flowchart showing processing executed by the control unit 110 of the monitoring apparatus 100.
- the control unit 110 executes the process shown in FIG. 4 triggered by the acquisition of input data (step S1). That is, the control unit 110 executes the process shown in FIG. 4 every time input data is acquired, and sequentially updates the display by the display unit 150.
- step S2 the control unit 110 extracts necessary condition data (step S2).
- step S ⁇ b> 2 the control unit 110 refers to the boat speed indicated by the input data acquired in step S ⁇ b> 1, and reads out and acquires condition data that matches the boat speed with the input data.
- FIG. 5 is a diagram showing an example of the condition data extracted in step S2.
- the relationship between the draft and trim at a boat speed of 20 knots and the fuel consumption per unit distance (for example, 1 mile) is shown.
- the fuel consumption is shown as a value when the draft of 13 m and the trim of 0 m is normalized to “100” and compared with this.
- the actual fuel weight (or capacity) may be described as the fuel consumption, and the value of the fuel consumption (ie, the value that can be converted into the fuel consumption) Required horsepower (for example, required horsepower of the main engine of the ship, engine output) may be described.
- the storage unit 120 uses a group of data with the same boat speed as shown in FIG. 5 as a table, instead of the condition data having the structure shown in FIG. 2, and holds such a table for each boat speed. Good.
- control unit 110 uses the data obtained in steps S1 and S2 to specify the fuel consumption amount under the navigation conditions at that time (step S3).
- the control unit 110 can specify the fuel consumption corresponding to the navigation condition by specifying the condition data indicating the navigation condition that matches the navigation condition indicated by the input data. Since the specification based on the condition data is an estimation, it does not necessarily match the actual fuel consumption.
- the control unit 110 determines a room for improvement of the fuel consumption (step S4). Specifically, the control unit 110 uses the condition data to identify the minimum value of the fuel consumption when the basic conditions (in this embodiment, the ship speed and draft, that is, other than trim) are the same, The difference between the minimum value and the fuel consumption specified in step S3 is obtained. The control unit 110 determines room for improvement in fuel consumption based on the magnitude of the difference thus obtained.
- the specific determination method by the control part 110 is not specifically limited, For example, you may determine by the difference of required horsepower, and you may take into account a remaining flight (namely, distance).
- control unit 110 generates and outputs monitoring data based on the processes of steps S3 and S4, and supplies the monitoring data to the display unit 150 (step S5). That is, the control unit 110 causes the display unit 150 to display the monitoring result. At this time, the control unit 110 may generate data for reproducing a warning sound or a synthesized sound. For example, the control unit 110 may reproduce a synthesized voice such as “currently trim is good” based on the determination result of step S4.
- FIG. 6 is a diagram illustrating information displayed on the display unit 150.
- the condition data shown in FIG. 5 is used, and the case where the actual trim of the ship is “+1 m” and the case where it is “0 m” are illustrated. In any case, it is assumed that the draft is 13 m and the boat speed is 20 knots.
- the determination result is “A” when the room for improvement in fuel consumption is less than 1%, and when it is 1% or more and less than 2%.
- the symbol “B” is used when 2% or more and less than 5%
- the symbol “C” is used when 5% or more.
- the trim value that minimizes the fuel consumption is “0 m” as shown in FIG.
- the determination result by the control unit 110 is “C”.
- the image imitating the hull described in the trim column is a visualization of the trim state of the ship, with the right side being the bow and the left side being the stern.
- the planned fuel consumption for the remaining flight is 250 tons.
- the trim is “+ 1m” and the ship sails with the same sailing conditions, it is 5 tons (250 tons x 2%) compared to the optimal trim (ie, 0 m). It will consume extra fuel. Therefore, when the trim is “+1 m”, there is 5 tons of room for fuel saving.
- the control unit 110 can execute such a calculation using the input data and the condition data, and can notify the user of room for improvement in fuel consumption by trim adjustment and room for fuel saving.
- the optimum trim here is a trim that can minimize fuel consumption.
- control unit 110 may change the display mode of information according to the determination result. For example, the control unit 110 changes the display color of characters or the like when the determination result is “A” and the display color when the determination result is not so, or the determination result is not relatively good (that is, improvement in fuel consumption) When there is relatively much room for the image data, the image data may be generated and output so as to blink characters and the like.
- control unit 110 may correct the condition data as necessary.
- the control unit 110 can correct the condition data when the user performs an operation for executing the correction or at a predetermined timing. That is, input data) and actual measured fuel consumption values are used to determine the fuel consumption error. If there is condition data that exceeds the specified range, the condition data is corrected to reduce the error. To do.
- the monitoring device 100 by notifying the optimum variable condition (trim) according to the basic conditions (ship speed and draft) from time to time, less fuel than when sailing under the current navigation conditions. It is possible to inform the user that there is a possibility of navigating by consumption. By referring to the output of the monitoring device 100, the user can navigate the ship with the optimum trim. However, ships may not always be able to navigate with optimal trim due to various factors such as weather, sea conditions, and ship structure. Therefore, the user actually operates the ship under the navigation conditions suitable for the situation at the time while referring to the output of the monitoring device 100.
- FIG. 7 is a diagram showing an overall configuration of a ship management system 10 which is another embodiment of the present invention.
- the ship management system 10 is configured to include a communication device 300 mounted on a plurality of ships that are navigating the sea, and a monitoring device 200 that communicates with the plurality of communication devices 300 by wireless communication.
- the monitoring device 200 is used on land rather than on board. That is, the user of the monitoring device 200 is a person who monitors the operations of a plurality of ships in an integrated manner, and is different from the user of the first embodiment in this respect.
- the communication device 300 is a device that transmits input data obtained in an onboard ship.
- the communication device 300 transmits input data to the monitoring device 200 by wireless communication via a communication satellite, that is, satellite communication.
- the communication device 300 may be configured to be connected to a measurement device mounted on a ship and receive input data from the measurement device, or a user on the ship (aside from the user of the monitoring device 200).
- the input data may be manually input.
- the communication device 300 may not only transmit input data but also receive data from the monitoring device 200 as necessary.
- the input data in the present embodiment corresponds to an example of “third data” in the present invention.
- FIG. 8 is a block diagram showing a hardware configuration of the monitoring apparatus 200.
- the monitoring device 200 has the same configuration as that of the monitoring device 200 of the first embodiment, except that it includes a communication unit 230 instead of the input unit 130.
- the communication unit 230 is means for transmitting / receiving data to / from the communication device 300.
- storage part 220 of this embodiment has memorize
- the condition data may be shared for that ship. For example, ships with the same ship type may correspond to this.
- the configuration of the ship management system 10 is as described above.
- input data from a plurality of ships is collected in the monitoring device 200 based on this configuration.
- the monitoring device 200 individually performs the same determination as that of the monitoring device 100 of the first embodiment for each of the plurality of ships based on the condition data corresponding to each ship, and displays information according to the determination result. .
- FIG. 9 is a diagram illustrating information displayed on the display unit 250.
- the monitoring device 200 displays determination results and navigation conditions for a plurality of ships.
- the user can communicate with the communication device 300 as necessary to give instructions such as trim adjustment.
- the navigation condition refers to various conditions that can affect the navigation performance during navigation of the ship.
- navigation performance refers to the performance that a ship can exhibit under given navigation conditions, and can be specified by ship speed, horsepower (engine output), fuel consumption, etc. in addition to fuel consumption.
- the condition data is not limited to the navigation condition and the fuel consumption associated with each other, but the navigation condition may be associated with the ship speed, horsepower, fuel consumption, and the like.
- the horsepower required for navigating at a certain ship speed can vary depending on variable conditions such as trim.
- the ship speed corresponds to the basic condition
- the horsepower corresponds to the navigation performance.
- the basic condition may be the rotation speed of the propeller
- the navigation performance may be the ship speed or horsepower.
- the state where the navigation performance is higher is a state where the boat speed is higher
- the horsepower is a state where the horsepower is lower
- the fuel efficiency is a state where the fuel efficiency is lower.
- the value used as an indicator of navigation performance must not overlap with the basic conditions indicated by the condition data.
- the basic condition in the present invention is a navigation condition that does not change, and is assumed to be a fixed value.
- the ship speed when used as the navigation performance, the ship speed cannot be included in the basic condition and needs to be excluded from the basic condition.
- the navigation conditions are not limited to trim, draft and ship speed, and all of these are not essential.
- weather, sea conditions, ship hulls, and the like can also correspond to examples of navigation conditions according to the present invention.
- the weather is weather, wind power (or wind speed), wind direction, and the like
- the sea state is ocean current, tidal current, wave height, and the like.
- hull dirt is, for example, deposits (marine life, etc.) on the hull, and the fuel consumption tends to increase as the hull gets dirty.
- the hull dirt can be used as a navigation condition by, for example, a user confirming this visually and quantifying the degree at a predetermined stage.
- FIG. 10 is a diagram illustrating another example of the data structure of the condition data.
- the condition data shown in the figure is different from the condition data shown in FIG. 2 in that the navigation conditions include “wind force” and “wave height”.
- the wind force is indicated by a predetermined index (for example, Beaufort wind class).
- FIG. 11 is a diagram showing another example of the data structure of the condition data.
- the condition data shown in the figure is an example when the required horsepower of the main engine is used as the navigation performance, and this is indicated by an isoline (that is, a contour diagram).
- the navigation conditions are “ship speed”, “trim (horizontal axis)” and “draft (vertical axis)”, and the ship speed is a basic condition.
- the trim is an example of an index that represents the inclination of the ship.
- the inclination of the ship may be specified by something other than trim (that is, the difference between the bow draft and the stern draft).
- a measuring instrument such as a so-called inclinometer on the ship, it is possible to specify the inclination of the ship without directly reading the bow draft and stern draft.
- the present invention may include, in the navigation conditions, the inclination of the ship in the left-right direction (that is, the direction orthogonal to the traveling direction) instead of or in addition to the inclination of the ship in the longitudinal direction (that is, the traveling direction).
- the present invention may not only optimize trim but also optimize heel.
- the present invention can be used not only for monitoring navigation conditions during voyage but also for prediction before voyage and analysis after voyage is completed. Therefore, the input data (in other words, data indicating a predetermined navigation condition) in the present invention does not necessarily have to be an actually measured value. For example, the present invention can also be used to predict how much fuel consumption will be achieved under what navigation conditions when making a ship operation plan. In such a case, a predicted value is used as input data. Further, when weather conditions and sea conditions are included in the navigation conditions, a forecast value in a planned route may be used as input data. The forecast value of the weather or sea condition may be provided from a public or private organization that provides it.
- the present invention may be used not only for displaying data (second data, monitoring data) output by the output means but also for other uses such as ship control.
- the present invention controls a ballast pump so as to achieve such a trim when there is a trim value that can be navigated with a fuel consumption smaller than the fuel consumption specified by the specifying means. May be.
- the method for notifying the navigation conditions is not limited to the display as shown in FIGS.
- the monitoring device 100 displays a warning only when the determination result is not relatively good (for example, “C” or “D”), while when the determination result is relatively good (for example, “A” or “B”). ) May not be displayed in particular.
- it may be sufficient to emit a warning sound instead of the display by the display unit 150.
- the warning sound in this case may be a different sound depending on whether the actual trim is larger or smaller than the optimum location. That is, the notification by the monitoring device 100 is specific if it can make the user close to the fact that there is a navigation condition that can reduce fuel consumption compared to the actual navigation condition at that time. Regardless of the method.
- the present invention may be for adjusting the navigation conditions other than trim (ie, the inclination of the ship), for example, for adjusting the draft.
- trim ie, the inclination of the ship
- the fuel consumption is the smallest when the draft is “12 m” and the trim is “0 m”.
- the ship speed it is possible to reduce fuel consumption by reducing the ship speed.
- the ship speed is reduced, the time required to reach the destination increases.
- the present invention is not limited to a ship management apparatus and a ship management system equipped with the same, but may be specified as a ship management method using the ship management apparatus, a program for causing a computer to function as the ship management apparatus of the present invention, and the like. Good.
- the program according to the present invention can be provided in a form recorded on a recording medium such as an optical disc, or a form that is downloaded to a computer via a network such as the Internet, and can be installed and used.
- the ship management apparatus according to the present invention may be configured by a plurality of operating entities such that, for example, the specifying unit and the output unit are realized by different devices.
- DESCRIPTION OF SYMBOLS 10 ... Ship management system, 100, 200 ... Monitoring apparatus, 110, 210 ... Control part, 111 ... Acquisition means, 112 ... Identification means, 113 ... Output means, 114 ... Correction means, 120, 220 ... Storage part, 130 ... Input , 140, 240 ... operation unit, 150, 250 ... display unit, 230 ... communication unit, 300 ... communication device
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Abstract
Description
また、本発明に係る船舶管理装置において、前記第1のデータは、複数の異なる船舶又は船型毎に与えられ、前記特定手段は、前記所定の航行条件として与えられた船舶又は船型に対応する前記第1のデータに基づいて前記燃料消費量を特定する構成が採用されてもよい。
また、本発明に係る船舶管理装置において、前記第1のデータを前記船舶の航行により得られた実測値に基づいて補正する補正手段を備える構成が採用されてもよい。
また、本発明に係る船舶管理装置において、前記第2のデータを文字又は画像の情報として表示する表示手段を備える構成が採用されてもよい。
図1は、本発明の一実施形態であるモニタリング装置100のハードウェア構成を示すブロック図である。モニタリング装置100は、貨物船などの船舶に搭載され、当該船舶が航行するときの状態を使用者(運航者等)に知らせるための装置である。モニタリング装置100は、例えば、一般的なパーソナルコンピュータによって実現可能である。モニタリング装置100は、制御部110と、記憶部120と、入力部130と、操作部140と、表示部150とを備える。
図7は、本発明の別の実施形態である船舶管理システム10の全体構成を示す図である。船舶管理システム10は、海上を航行中の複数の船舶に搭載された通信装置300と、複数の通信装置300と無線通信により通信するモニタリング装置200とを備える構成である。本実施形態において、モニタリング装置200は、船上ではなく陸地において使用される。すなわち、モニタリング装置200の使用者は、複数の船舶の運航を統括的に監視する者であり、この点において第1実施形態の使用者と相違する。
本発明は、上述した実施形態に限定されず、以下の変形例のような他の形態でも実施可能である。また、以下に示す変形例は、必要に応じて、各々を適宜に組み合わせて実施することも可能である。
本発明において、航行条件とは、船舶の航行時において航行性能に影響を与え得る諸条件をいう。ここにおいて、航行性能とは、与えられた航行条件下で船舶が発揮し得る性能のことをいい、燃料消費量のほかに、船速、馬力(エンジン出力)、燃費などによっても特定可能である。よって、条件データ(第1のデータ)は、航行条件と燃料消費量とを対応付けたものに限らず、航行条件と船速、馬力、燃費などとを対応付けたものであってもよい。例えば、ある船速で航行するために必要となる馬力は、トリムなどの可変条件に応じて変わり得る。この場合、船速は基本条件に該当し、馬力は航行性能に該当する。同様に、基本条件をプロペラの回転数とし、航行性能を船速や馬力としてもよい。なお、航行性能がより高い状態とは、船速においてはより高速な状態のことであり、馬力においてはより低馬力な状態のことであり、燃費においてはより低燃費な状態のことである。
上述した実施形態において、トリムは、船舶の傾きを表す指標の一例である。本発明において、船舶の傾きは、トリム(すなわち、船首喫水と船尾喫水の差)以外のものによって特定されてもよい。例えば、いわゆる傾斜計のような計測機器を船舶に設置することによって、船首喫水及び船尾喫水を直接読み取ることなく船舶の傾きを特定することも可能である。
本発明は、航海中の航行条件のモニタリングだけではなく、航海前の予測や、航海終了後の分析にも用いることができる。したがって、本発明における入力データ(換言すれば、所定の航行条件を示すデータ)は、必ずしも実測値でなくてもよい。例えば、本発明は、船舶の運航計画を立てる場合に、どのような航行条件で航行するとどの程度の燃料消費量になるのかを予測するために用いることも可能である。このような場合には、入力データとして予測値が用いられる。また、気象や海象を航行条件に含む場合には、予定されている航路における予報値を入力データとして用いればよい。気象又は海象の予報値は、これを提供する公共又は民間の機関から提供を受ければよい。
本発明は、出力手段により出力されるデータ(第2のデータ、モニタリングデータ)を表示の用に供するだけでなく、船舶の制御などの他の用途に用いてもよい。例えば、本発明は、特定手段により特定された燃料消費量よりも少ない燃料消費量で航行可能なトリムの値が存在する場合に、そのようなトリムになるようにバラストポンプを制御するものであってもよい。
本発明において、航行条件を報知する方法は、図6や図9のような表示に限定されない。例えば、モニタリング装置100は、判定結果が比較的良好でない場合(例えば「C」又は「D」)にのみ警告を表示する一方、判定結果が比較的良好な場合(例えば「A」又は「B」)には特に情報を表示しないようにしてもよい。あるいは、このような警告を行う場合であれば、表示部150による表示に代えて警告音を発するだけであってもよい。この場合の警告音は、実際のトリムが最適地よりも大きい場合と小さい場合とで異なる音としてもよい。すなわち、モニタリング装置100による報知は、そのときの実際の航行条件よりも燃料消費量を少なくすることができる航行条件が存在することを使用者に近くさせることができるものであれば、その具体的な手法を問わない。
本発明は、トリム(すなわち船舶の傾き)以外の航行条件の調整を行うためのものであってもよく、例えば喫水を調整するためのものであってもよい。例えば、図5に示した航行条件において、喫水を「13m」に限定しなければ、燃料消費量が最も少なくなるのは喫水を「12m」、トリムを「0m」にした場合である。なお、船舶の場合、船速を低下させることによっても燃料消費量を少なくすることが可能であるが、船速を低下させると目的地までの所要時間が多くなる。
本発明は、船舶管理装置やこれを備えた船舶管理システムとしてだけではなく、船舶管理装置を用いた船舶管理方法、コンピュータを本発明の船舶管理装置として機能させるためのプログラムなどとして特定されてもよい。さらに、本発明に係るプログラムは、光ディスクなどの記録媒体に記録した形態や、インターネットなどのネットワークを介して、コンピュータにダウンロードさせ、これをインストールして利用可能にする形態などでも提供することができる。また、本発明に係る船舶管理装置は、例えば、特定手段と出力手段とが別の装置によって実現される、といったように、複数の動作主体によって構成されてもよい。
Claims (7)
- 船舶の航行に関する基本条件と当該船舶の傾きとを少なくとも含む船舶の航行条件を示す第1の航行条件と、当該第1の航行条件に対応する船舶の航行性能とを示す第1のデータを取得する取得手段と、
前記第1のデータに基づき、基本条件が所定の航行条件と一致する第1の航行条件に対応付けられた航行性能を特定する特定手段と、
前記特定手段により特定された航行性能のうちのより高い航行性能に対応する第1の航行条件を第2のデータとして出力する出力手段と
を備える船舶管理装置。 - 前記基本条件は、気象、海象、船体汚れ、喫水、船速、燃料消費量、馬力及び回転数の少なくともいずれかを含み、
前記航行性能は、船速、燃料消費量、馬力及び燃費の少なくともいずれかであって、かつ前記基本条件と重複しないものを含む
請求項1に記載の船舶管理装置。 - 前記第1のデータは、複数の異なる船舶又は船型毎に与えられ、
前記特定手段は、前記所定の航行条件として与えられた船舶又は船型に対応する前記第1のデータに基づいて前記燃料消費量を特定する
請求項1又は2に記載の船舶管理装置。 - 前記第1のデータを前記船舶の航行により得られた実測値に基づいて補正する補正手段を備える
請求項1ないし3のいずれか1項に記載の船舶管理装置。 - 前記第2のデータを文字又は画像の情報として表示する表示手段を備える
請求項1ないし4のいずれか1項に記載の船舶管理装置。 - 請求項1ないし5のいずれか1項に記載の船舶管理装置と、
前記船舶に搭載され、前記所定の航行条件を示す第3のデータを前記船舶管理装置に送信する通信装置と
を備える船舶管理システム。 - コンピュータを、
船舶の航行に関する基本条件と当該船舶の傾きとを少なくとも含む船舶の航行条件を示す第1の航行条件と、当該第1の航行条件に対応する船舶の航行性能とを示す第1のデータを取得する取得手段と、
前記第1のデータに基づき、基本条件が所定の航行条件と一致する第1の航行条件に対応付けられた航行性能を特定する特定手段と、
前記特定手段により特定された航行性能のうちのより高い航行性能に対応する第1の航行条件を第2のデータとして出力する出力手段
として機能させるためのプログラム。
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