Abstract: A tank state estimating method of estimating a state in a tank at a predetermined point in time on a sailing course of an LNG carrier is provided. The LNG carrier carrying LNG stored in the tank as a cargo.

Abstract: Reception unit receives data indicating water temperature of a body of water through which a vessel voyages, vessel speed, and a period for which those values are maintained. From storage unit, index value acquisition unit reads out a decrease amount of anti-fouling paint corresponding to the water temperature and vessel speed received by reception unit. Index value specification unit specifies a decrease amount of anti-fouling paint in the period by multiplying the length of time of the period received by reception unit by the decrease amount read out by index value acquisition unit. Remaining amount acquisition unit integrates the decrease amounts of the anti-fouling paint specified by index value specification unit at the time of coating with the anti-fouling paint and onward.

Abstract: A reference range identifying device acquires and records, at a predetermined time interval, a measuring result of a load and exhaust temperature of an engine. The device identifies, based on combinations of the load and exhaust temperature recorded at multiple points of time, for each load zone, for example a 95% confidence interval of a distribution of exhaust temperatures as a reference range. Subsequently, the device calculates an approximate curve for lower limits and upper limits of reference ranges identified for the load zones. The device identifies a range sandwiched by the calculated two approximate curves as a reference range that changes in accordance with a load. The device, upon detecting that a current load and exhaust temperature of the engine is not included in the reference range, notifies the detected fact to a user.

Abstract: A first unit acquires attribute record data and a second unit acquires deterioration degree data from a terminal device mounted on a ship. The attribute record data indicates an attribute relating to a past sailing of the ship. The deterioration degree data indicates a deterioration degree, which is checked during performance of maintenance work, of each device mounted on the ship. A third unit generates relational data indicating a relation between various attributes relating to the state of the sailing of the ship and the deterioration degree of the device based on the attribute record data and deterioration degree data. A fourth unit acquires estimated attribute data indicating an estimated value of the attributes relating to sailing of the ship. A fifth unit generates timing data indicating a timing of maintenance work to be performed on each device based on the attribute record data, estimated attribute data, and relational data.

Abstract: A ship's speed meter for measuring a speed relative to the water of a ship 10, the ship's speed meter including a wave transmitter 1 for emitting a sound wave toward a sea bottom 20, a wave receiver 2 for detecting a plurality of reflected waves, which are reflected waves of the sound wave having been emitted from the wave transmitter 1, reflected by a plurality of reflecting objects 30 positioned at different water depths, and an arithmetic processing unit 4 for calculating a ship's speed relative to the water of the ship 10 based on a frequency difference of the sound wave and the reflected wave.

Abstract: An acquisition unit acquires weather and marine data indicating a ship voyage schedule that serves as a reference, actual performance data, fuel consumption data, and weather and marine conditions the ship has encountered during a voyage. A time difference data generation unit calculates the difference between the time indicated by the reference data and the time indicated by the actual performance data for each of the journeys between ports. Projected fuel consumption calculation unit calculates projected fuel consumption for each of the journeys between ports based on the reference data, weather and marine data and fuel consumption data. Fuel consumption difference data generation unit calculates the difference between the projected fuel consumption and the actual fuel consumption amount indicated by the actual performance data for each of the journeys between ports.

Abstract: A fuel oil information providing server device acquires a reference fuel oil price at bunkering locations on a sailing route specified by a voyage ID input to a terminal device by a user or at which a ship is able to call from the sailing route, and data indicating conditions for correcting the reference fuel oil price, and specifies a fuel oil price obtained by correcting the reference fuel oil price indicated by the acquired data in accordance with the conditions. Fuel oil information providing server device generates display instruction data for instructing that a specified fuel oil price be displayed as a list along with determination rules for a bunkering amount at one or more bunkering locations, and outputs the data to a terminal device that displays information to be used for formulating a bunkering plan.

Abstract: Reception unit receives data indicating water temperature of a body of water through which a vessel voyages, vessel speed, and a period for which those values are maintained. From storage unit, index value acquisition unit reads out a decrease amount of anti-fouling paint corresponding to the water temperature and vessel speed received by reception unit. Index value specification unit specifies a decrease amount of anti-fouling paint in the period by multiplying the length of time of the period received by reception unit by the decrease amount read out by index value acquisition unit. Remaining amount acquisition unit integrates the decrease amounts of the anti-fouling paint specified by index value specification unit at the time of coating with the anti-fouling paint and onward.

Abstract: A terminal device stores ship characteristic data that indicates a relationship between rotation speed and ship speed, and rotation speed and fuel consumption when a ship is navigated under various navigation conditions. If a user inputs data that indicates draft state and wind and wave state on a performance display screen displayed on the terminal device, the terminal device generates relationship data that indicates a relationship between rotation speed and ship speed, and rotation speed and fuel consumption when a ship is navigated under wind and wave states corresponding to the input data and each of a plurality of Beaufort states that are set in the terminal device in advance on the basis of the ship characteristic data. The terminal device displays a graph that displays the relationship between rotation speed, ship speed and fuel consumption for each of a plurality of navigation conditions using the relationship data.

Abstract: In connection with a voyage in which a ship visits several ports on a sailing route, when a user inputs a berthing period at each port on the sailing route on a screen in a computer for managing voyage information displayed by a terminal device, the terminal device specifies, with regard to each sectional sailing route between two neighboring ports on the sailing route, fuel consumption rate when the ship sails on the sectional sailing route based on a sailing speed determined by the input berthing periods and parameters of maritime weather conditions under which the ship sails on the sectional sailing route. The terminal device calculates fuel consumption required for sailing on each sectional sailing route and total fuel consumption required for sailing the entire sailing route using the specified fuel consumption rates.

Abstract: A first unit acquires attribute record data and a second unit acquires deterioration degree data from a terminal device mounted on a ship. The attribute record data indicates an attribute relating to a past sailing of the ship. The deterioration degree data indicates a deterioration degree, which is checked during performance of maintenance work, of each device mounted on the ship. A third unit generates relational data indicating a relation between various attributes relating to the state of the sailing of the ship and the deterioration degree of the device based on the attribute record data and deterioration degree data. A fourth unit acquires estimated attribute data indicating an estimated value of the attributes relating to sailing of the ship. A fifth unit generates timing data indicating a timing of maintenance work to be performed on each device based on the attribute record data, estimated attribute data, and relational data.

Abstract: A reference range identifying device acquires and records, at a predetermined time interval, a measuring result of a load and exhaust temperature of an engine. The device identifies, based on combinations of the load and exhaust temperature recorded at multiple points of time, for each load zone, for example a 95% confidence interval of a distribution of exhaust temperatures as a reference range. Subsequently, the device calculates an approximate curve for lower limits and upper limits of reference ranges identified for the load zones. The device identifies a range sandwiched by the calculated two approximate curves as a reference range that changes in accordance with a load. The device, upon detecting that a current load and exhaust temperature of the engine is not included in the reference range, notifies the detected fact to a user.

Abstract: A ship assignment device acquires voyage schedule information including an operation time schedule and a sailing route of a voyage. The ship assignment device acquires, from a database, weather information related to the operation time schedule and the sailing route included in the schedule information. The ship assignment device acquires information regarding variations in fuel consumption rate from a database that stores the information for each of plural ships. On the basis of the acquired weather information and acquired information regarding each ship, the ship assignment device calculates the fuel consumption for when each ship sails on the sailing route included in the acquired voyage schedule information in accordance with the operation time schedule included in the voyage schedule information. On the basis of the calculation result, the ship assignment device outputs information identifying plural ships.

Abstract: A fuel oil information providing server device acquires a reference fuel oil price at bunkering locations on a sailing route specified by a voyage ID input to a terminal device by a user or at which a ship is able to call from the sailing route, and data indicating conditions for correcting the reference fuel oil price, and specifies a fuel oil price obtained by correcting the reference fuel oil price indicated by the acquired data in accordance with the conditions. Fuel oil information providing server device generates display instruction data for instructing that a specified fuel oil price be displayed as a list along with determination rules for a bunkering amount at one or more bunkering locations, and outputs the data to a terminal device that displays information to be used for formulating a bunkering plan.

Abstract: A ship assignment device acquires voyage schedule information including an operation time schedule and a sailing route of a voyage. The ship assignment device acquires, from a database, weather information related to the operation time schedule and the sailing route included in the schedule information. The ship assignment device acquires information regarding variations in fuel consumption rate from a database that stores the information for each of plural ships. On the basis of the acquired weather information and acquired information regarding each ship, the ship assignment device calculates the fuel consumption for when each ship sails on the sailing route included in the acquired voyage schedule information in accordance with the operation time schedule included in the voyage schedule information. On the basis of the calculation result, the ship assignment device outputs information identifying plural ships.

Abstract: An analysis device acquires various sorts of information related to a schedule of the voyage such as a ship name, a departure port name, a destination port name, names of ports of call between the departure port and the destination port, scheduled dates of arrival at each port on a sailing route of the voyage, scheduled dates of departure from each port on the sailing route, etc. The analysis device acquires from a first database a table containing dates of events that occur at ports on the sailing route indicated by the acquired information. The analysis device counts a number of days on which the time schedule of the voyage is affected by the events by use of the acquired information related to the schedule and the acquired table, and displays the counted number of days.

Abstract: The present invention provides an arrangement for providing a bunkering plan (bunkering ports and bunkering amounts at the bunkering ports) that reduces fuel costs in a voyage of a ship. According to one embodiment of the present invention, if a bunkering plan that brings about a lower fuel costs according to the current bunkering plan occurs in accordance with the change in fuel price at a specific port, for example, for a ship that is being sailed, a user such as a ship operation manager is notified of this event. Accordingly, a user is able to know easily which bunkering plan is suitable.

Abstract: An acquisition unit acquires weather and marine data indicating a ship voyage schedule that serves as a reference, actual performance data, fuel consumption data, and weather and marine conditions the ship has encountered during a voyage. A time difference data generation unit calculates the difference between the time indicated by the reference data and the time indicated by the actual performance data for each of the journeys between ports. Projected fuel consumption calculation unit calculates projected fuel consumption for each of the journeys between ports based on the reference data, weather and marine data and fuel consumption data. Fuel consumption difference data generation unit calculates the difference between the projected fuel consumption and the actual fuel consumption amount indicated by the actual performance data for each of the journeys between ports.

Abstract: A terminal device stores ship characteristic data that indicates a relationship between rotation speed and ship speed, and rotation speed and fuel consumption when a ship is navigated under various navigation conditions. If a user inputs data that indicates draft state and wind and wave state on a performance display screen displayed on the terminal device, the terminal device generates relationship data that indicates a relationship between rotation speed and ship speed, and rotation speed and fuel consumption when a ship is navigated under wind and wave states corresponding to the input data and each of a plurality of Beaufort states that are set in the terminal device in advance on the basis of the ship characteristic data. The terminal device displays a graph that displays the relationship between rotation speed, ship speed and fuel consumption for each of a plurality of navigation conditions using the relationship data.

Abstract: In connection with a voyage in which a ship visits several ports on a sailing route, when a user inputs a berthing period at each port on the sailing route on a screen in a computer for managing voyage information displayed by a terminal device, the terminal device specifies, with regard to each sectional sailing route between two neighboring ports on the sailing route, fuel consumption rate when the ship sails on the sectional sailing route based on a sailing speed determined by the input berthing periods and parameters of maritime weather conditions under which the ship sails on the sectional sailing route. The terminal device calculates fuel consumption required for sailing on each sectional sailing route and total fuel consumption required for sailing the entire sailing route using the specified fuel consumption rates.