Abstract

A periodic blowout air lubrication system comprises a plurality of air blowout ports 10 that are provided to the bottom of a ship, an air supply means 20 that supplies air to the plurality of air blowout ports 10 via a piping route 50, a rotary-type route switching means 30 that is provided midway through the piping route 50, and a control means 40 that controls the rotary-type route switching means 30, wherein: there are a plurality of branch pipes 52, which serve as the piping route 50 and lead to the plurality of air blowout ports 10 at the downstream side of the rotary-type route switching means 30; the air blowout ports 10 to which air is supplied by way of rotation of a valve body of the rotary-type route switching means 30 are switched in a prescribed order, and air can be periodically blown out from all of the plurality of air blowout ports 10 by the rotation of the valve body of the rotary-type route switching means 30. The periodic blowout air lubrication system can be installed in a limited in-ship space, periodically blows air out of the bottom of the ship such that a friction resistance reduction effect by air lubrication is exhibited, and also has excellent durability and maintainability.

IPC Classes  ?

• B63B 1/38 - Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers
• B63B 59/04 - Preventing hull fouling
• F16K 11/074 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with pivoted closure members with flat sealing faces

Abstract

[Problem] To provide an index-based hull structure manufacturing method, design method and design program with which it is possible to prevent a breach of a cargo oil tank and oil outflow, or to reduce the amount of outflow, in the event of running aground. [Solution] The present invention includes: a step for selecting a steel plate to be applied to a hull structure 10 of a ship; a step for quantifying a stress-strain relationship of the steel plate; a step for using the stress-strain relationship to execute a grounding analysis of the hull structure 10 to which the steel plate is applied, to obtain a calculated value of a critical grounding speed; a step for determining a required value of the critical grounding speed; and a step for evaluating a grounding resistance of the hull structure 10 on the basis of the calculated and required values of the critical grounding speed. The hull structure 10 for which it has been determined, from the evaluation result of the grounding resistance, that the required value is satisfied, is manufactured.

IPC Classes  ?

• B63B 43/18 - Improving safety of vessels, e.g. damage control, not otherwise provided for preventing collisionImproving safety of vessels, e.g. damage control, not otherwise provided for reducing collision damage
• B63B 3/20 - Shells of double type
• B63B 71/00 - Designing vesselsPredicting their performance
• B63B 71/10 - Designing vesselsPredicting their performance using computer simulation, e.g. finite element method [FEM] or computational fluid dynamics [CFD]
• B63B 73/00 - Building or assembling vessels or marine structures, e.g. hulls or offshore platforms

Abstract

Objects of the present invention are provide an evaluation method of ship propulsive performance in actual seas, an evaluation program of ship propulsive performance in actual seas and an evaluation system of ship propulsive performance in actual seas capable of precisely evaluating ship propulsive performance in actual seas on the same scale also before the ship sails for example. As solving means of the objects, a standard sailing model 2 of the ship in actual seas is set, a sailing condition of the ship and a ship condition of the ship are input to the standard sailing model 2, the standard sailing model 2 into which the sailing condition and the ship condition are input and the ship condition are applied to a previously verified calculating method 1 of ship performance in actual seas, and ship propulsive performance in actual seas is evaluated.

IPC Classes  ?

• B63B 79/30 - Monitoring properties or operating parameters of vessels in operation for diagnosing, testing or predicting the integrity or performance of vessels
• B63B 79/15 - Monitoring properties or operating parameters of vessels in operation using sensors, e.g. pressure sensors, strain gauges or accelerometers for monitoring environmental variables, e.g. wave height or weather data
• B63H 21/12 - Use of propulsion power plant or units on vessels the vessels being motor-driven
• B63H 21/21 - Control means for engine or transmission, specially adapted for use on marine vessels

Abstract

[Problem] To provide a hull structure and a method of designing a hull structure that enables, when run aground, prevention of freight-oil tank breaches and oil spills as well as spill-volume reduction, and that excels in anti-stranding properties with construction costs held down. [Solution] This hull structure employs, in a portion of a bow-end outer shell 21a, or in the entire region of the outer shell 21a, at the ship bottom frontward of a collision bulkhead 20, high-ductility steel plate that meets standards in conformance with the unified standards (Unified Requirement W11 Rev. 9 2017) of the International Association of Classification Societies (IACS), and in which the product of tensile strength (N/mm2) obtained from a tensile test utilizing a parent-material full-thickness test specimen in which the inter-gauge-point distance is 200 mm and the width is 25 mm, and total elongation is 120 N/mm2 or greater.

IPC Classes  ?

• B63B 43/18 - Improving safety of vessels, e.g. damage control, not otherwise provided for preventing collisionImproving safety of vessels, e.g. damage control, not otherwise provided for reducing collision damage
• B63B 3/20 - Shells of double type
• B63B 3/56 - BulkheadsBulkhead reinforcements
• B63B 71/00 - Designing vesselsPredicting their performance
• B63B 71/10 - Designing vesselsPredicting their performance using computer simulation, e.g. finite element method [FEM] or computational fluid dynamics [CFD]
• B63B 73/00 - Building or assembling vessels or marine structures, e.g. hulls or offshore platforms

Abstract

The present invention comprises: a surface repeater vehicle 200 having a repeater vehicle propulsion means 38 and a repeater vehicle position measurement means 40; an underwater vehicle 100 having a vehicle position estimation means 20; an information transmission line 24 for connecting between the surface repeater vehicle 200 and the underwater vehicle 100, and transmitting acquired information including image information obtained by the underwater vehicle 100; a position setting means 54 for setting a target latitude and target longitude for the surface repeater vehicle 200 and the underwater vehicle 100; and a control means 12, 32 for controlling the surface repeater vehicle 200 and the underwater vehicle 100, and is configured such that, on the basis of the target latitude and target longitude that have been set and an on-water position measured by the repeater vehicle position measurement means 40, the repeater vehicle propulsion means 38 is driven, the position of the surface repeater vehicle 200 is controlled by the control means 12, 32, and on the basis of the target latitude and target longitude that have been set and an underwater position estimated by the vehicle position estimation means 20, the position of the underwater vehicle 100 is controlled by the control means 12, 32, thereby causing the underwater vehicle 100 and the surface repeater vehicle 200 to travel side-by-side while maintaining a vertical positional relationship on the water surface and under water until reaching the target latitude and target longitude.

IPC Classes  ?

• B63G 8/00 - Underwater vessels, e.g. submarines
• B63B 79/15 - Monitoring properties or operating parameters of vessels in operation using sensors, e.g. pressure sensors, strain gauges or accelerometers for monitoring environmental variables, e.g. wave height or weather data
• B63B 79/40 - Monitoring properties or operating parameters of vessels in operation for controlling the operation of vessels, e.g. monitoring their speed, routing or maintenance schedules
• B63G 8/08 - Propulsion
• B63G 8/14 - Control of attitude or depth

Abstract

A method for molding analysis of a plate-like intermediate base material containing resin and reinforcing material when the base material is molded, including applying a base material model having anisotropy between out-of-plane direction and an in-plane direction orthogonal to the out-of-plane direction, and calculating viscosity distribution in a cross-section direction of a molded article using each viscosity in accordance with a flow field, and the viscosity distribution indicates that under a boundary condition there is no slip flow of the base material on a wall surface of the mold, as a result of a shear field in the vicinity of the wall surface, a low viscosity layer that is more affected by an out-of-plane shear viscosity than a central portion of the base material is automatically formed in the vicinity of the wall surface, and the base material in the vicinity of the wall surface functions as a lubricating layer.

IPC Classes  ?

• G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
• G06F 113/22 - Moulding
• G06F 113/26 - Composites

Abstract

[Object] It is an object of the present invention to provide a shipbuilding simulation method and a shipbuilding simulation program based on a unified database capable of simulating building of a ship at detailed operation level. [Object] It is an object of the present invention to provide a shipbuilding simulation method and a shipbuilding simulation program based on a unified database capable of simulating building of a ship at detailed operation level. [Solving Means] The shipbuilding simulation method executes a step S1 for obtaining basic design information of a ship from a unified database 10, and for setting the basic design information as a product model which is expressed by means of a standardized data structure, a step S2 from the unified database 10, information concerning equipment and worker of a factory, and for setting this information as a facility model 12 which is expressed by means of the standardized data structure, a step S3 for creating a process model which is expressed by means of the standardized data structure based on the product model and the facility model 12, a step S5 for carry out time evolution system simulation based on the process model, a step S6 for converting a result of simulation into time series data and into building time series information 51, and a step S7 for supplying the building time series information 51.

IPC Classes  ?

• G06F 30/20 - Design optimisation, verification or simulation
• G06F 30/13 - Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
• G06Q 10/0631 - Resource planning, allocation, distributing or scheduling for enterprises or organisations

Abstract

The present invention is to simulate building of a ship at a detailed operation level by executing: a product model creating step S1 of creating a product model by obtaining basic design information 1 in which a coupling relation between a completed part and a component part of the ship is clarified; a facility model creating step S2 of obtaining equipment information 21 and worker information 22 of a factory and creating a facility model; a process model creating step S3 of clarifying assembling procedure and tasks to build the completed part and creating a process model based on the product model and the facility model; a simulation step S4 to carry out time evolution system simulation based on the process model; and a time series informatization step S5 of time series digitizing a result of the time evolution system simulation into building time series information 42.

IPC Classes  ?

• G06Q 10/067 - Enterprise or organisation modelling
• G06Q 10/0633 - Workflow analysis
• G06F 30/15 - Vehicle, aircraft or watercraft design

Abstract

This ship hull frictional resistance reducing apparatus: is equipped with an automatic air distribution device 20 which blows off air from a plurality of air blowoff ports to the bottom of a ship by switching between the plurality of air blowoff ports, and automatically distributes the air; and has n-number of the air blowoff ports, each having a prescribed width, disposed at portions obtained by, depending on the breadth of the bottom of the ship, dividing the breadth of the ship hull into n-number of sections. The automatic air distribution device 20 blows off air from all of the plurality of air blowoff ports in one cycle of air blowoff cycle while switching between the plurality of air blowoff ports in a prescribed sequence. With this configuration, cyclical blowoff is utilized, and it is possible to increase a frictional resistance reducing effect due to air lubrication, while suppressing the motive power required for air blowoff.

IPC Classes  ?

• B63B 1/38 - Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers

Abstract

The present invention provides an automatic guiding method of a vessel capable of controlling a deviation from the scheduled route/course to a value less than a constant value even if there is disturbance without necessitating a great amount of calculations, an automatic guiding program of a vessel, an automatic guiding system of a vessel and a vessel. An automatic guiding method of a vessel using an automatic sailing device which at least automatically steers of the vessel underway includes a scheduled route/course producing process S1 for acquiring or calculating the scheduled route/course, the vessel information acquiring process S3 for acquiring a position of the vessel and a heading, a pure pursuit calculation process S4 for calculating a target point or an orientation of the target point which satisfies a predetermined condition on the scheduled route/course in an ongoing direction of the vessel based on the position and a heading, an automatic sailing calculation process S5 for calculating a steering/rudder angle of the vessel based on the target point or the orientation and the position or the heading, and controlling process S6 for controlling the automatic sailing device based on the calculated steering/rudder angle.

IPC Classes  ?

• B63H 25/04 - Initiating means for steering automatic, e.g. reacting to compass
• G05D 1/02 - Control of position or course in two dimensions
• B63B 79/10 - Monitoring properties or operating parameters of vessels in operation using sensors, e.g. pressure sensors, strain gauges or accelerometers
• B63B 79/40 - Monitoring properties or operating parameters of vessels in operation for controlling the operation of vessels, e.g. monitoring their speed, routing or maintenance schedules

Abstract

This method is provided with: a step S1 for acquiring, from navigation data on ships, actual ship data for actual ship monitoring analysis; a step S2 for acquiring, for a ship, a propeller standalone performance and an external force response indicating a change in hull resistance due to a disturbance; a step S3 for using the propeller standalone performance and the external force response of the ship to make a disturbance correction to a still water performance of the ship on the basis of the acquired actual ship data; a step S4 for determining whether there is actual ship data for which a disturbance correction cannot be made; a step S5 for performing tuning on the basis of the actual ship data and the propeller standalone performance when there is actual ship data for which the disturbance correction cannot be made; and a step S6 for outputting, as disturbance-corrected data, at least one of the disturbance correction data for which the disturbance correction has been made and tuned disturbance correction data obtained by performing the tuning. This arrangement makes it possible to perform disturbance correction appropriately and raise the accuracy of ship performance evaluation using actual ship monitoring analysis.

IPC Classes  ?

• B63B 71/10 - Designing vesselsPredicting their performance using computer simulation, e.g. finite element method [FEM] or computational fluid dynamics [CFD]
• B63B 49/00 - Arrangements of nautical instruments or navigational aids

Abstract

This molding analysis method includes performing molding analysis on an intermediate base material during molding, using a metal mold, of a tabular intermediate base material that includes a resin and a reinforcement material. The method comprises a step in which a model having anisotropy between an out-of-plane direction and an in-plane direction orthogonal to the out-of-plane direction is applied as a model of the intermediate base material, and a step in which the viscosity distribution in a cross-sectional direction of a molded article is calculated using each viscosity that corresponds to a flow field. The viscosity distribution indicates, under a boundary condition that there is no flow slide of the intermediate base material on a wall surface of the metal mold, that a low-viscosity layer where the impact of out-of-plane shear viscosity is greater than for a central part of the intermediate base material is automatically formed in the vicinity of the wall surface due to a shear field being generated in the vicinity of the wall surface, and that the intermediate base material in the vicinity of the wall surface functions as a lubrication layer.

IPC Classes  ?

• G06F 30/23 - Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
• G06F 113/22 - Moulding
• G06F 113/26 - Composites

Abstract

[Problem] To enable easy installation of a joint filler that adapts well to changes in the width of a joint even if the width of the joint is small, and to extend the life of an existing sand prevention board or sand prevention sheet. [Solution] A diameter-enlarged vertical hole 14 is formed by drilling into an existing caisson frame facing a joint G, a columnar cushioning material 30 made of a knitted fabric is accommodated in the diameter-enlarged vertical hole 14 in a compressed state, and the columnar cushioning material 30 is positioned in the diameter-enlarged vertical hole 14 by the restoring force of the knitted fabric. By installing a columnar cushioning material made of a knitted fabric in a compressed state, pseudo-elasticity is generated in the columnar cushioning material 30.

IPC Classes  ?

• E02B 3/04 - Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
• E02B 3/16 - Sealings or joints

Abstract

The present invention comprises: an aquatic relay machine 200 having a relay machine propulsion means 38 and a relay machine position measurement means 40; an underwater cruising body 100 having a cruising body position estimation means 20; an information transmission line 24 for connecting between the aquatic relay machine 200 and the underwater cruising body 100, and transmitting acquired information including image information obtained by the underwater cruising body 100; a position setting means 54 for setting a target latitude and target longitude for the aquatic relay machine 200 and the underwater cruising body 100; and control means 12, 32 for controlling the aquatic relay machine 200 and the underwater cruising body 100, and is configured such that, on the basis of the target latitude and target longitude that have been set and an on-water position measured by the relay machine position measurement means 40, the relay machine propulsion means 38 is driven, the position of the aquatic relay machine 200 is controlled by the control means 12, 32, and on the basis of the target latitude and target longitude that have been set and an underwater position estimated by the cruising body position estimation means 20, the position of the underwater cruising body 100 is controlled by the control means 12, 32, thereby causing the underwater cruising body 100 and the aquatic relay machine 200 to travel side-by-side while maintaining a vertical positional relationship on the water surface and under water until reaching the target latitude and target longitude.

IPC Classes  ?

• B63C 11/00 - Equipment for dwelling or working under waterMeans for searching for underwater objects
• B63C 11/48 - Means for searching for underwater objects
• G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
• G01S 15/88 - Sonar systems specially adapted for specific applications

Abstract

A floating-oil recovery device includes: a bubble-curtain generation mechanism configured to discharge air into water to generate a bubble curtain in the water so as to increase a thickness of a film of floating oil while regulating spread of the floating oil; and an ejector configured to recover an oil-water mixed fluid having the floating oil and the water mixed with each other by jetting high-velocity water toward the film of floating oil enclosed with the bubble curtain to destroy the film of floating oil.

IPC Classes  ?

• E02B 15/04 - Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
• B01D 17/02 - Separation of non-miscible liquids
• B01F 23/231 - Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
• B01F 101/00 - Mixing characterised by the nature of the mixed materials or by the application field
• B63B 35/32 - Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for collecting pollution from open water
• C02F 1/24 - Treatment of water, waste water, or sewage by flotation
• C02F 1/68 - Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
• C02F 101/32 - Hydrocarbons, e.g. oil
• E02B 15/08 - Devices for reducing the polluted area without removing the material
• E02B 15/10 - Devices for removing the material from the surface

Abstract

[Problem] To provide a unified database-based construction simulation method and construction simulation program of a ship through which ship construction can be simulated at a careful operation level. [Solution] The present invention comprises: a step S1 for acquiring basic design information about a ship from a unified database 10 and setting the acquired information as a product model that is represented with a standardized data structure; a step S2 for acquiring information about a factory facility and workers from the unified database 10 and setting the acquired information as a facility model 12 that is represented with a standardized data structure; a step S3 for creating, on the basis of the product model and the facility model 12, a process model that is represented with a standardized data structure; a step S5 for performing time evolution system simulation on the basis of the process model; a step S6 for making the simulation result into time series data to be building time series information 51; and a step S7 for providing the building time series information 51.

IPC Classes  ?

• B63B 49/00 - Arrangements of nautical instruments or navigational aids
• G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
• G06Q 50/04 - Manufacturing
• G16Y 10/25 - Manufacturing
• G16Y 20/10 - Information sensed or collected by the things relating to the environment, e.g. temperatureInformation sensed or collected by the things relating to location
• G16Y 20/20 - Information sensed or collected by the things relating to the thing itself
• G16Y 40/20 - AnalyticsDiagnosis
• G06Q 10/00 - AdministrationManagement

Abstract

The present invention simulates shipbuilding at a detailed work level by executing: a product model creation step S1 for acquiring basic design information 1 that clarifies a finished component of a ship and the connectivity relationships between the constituent components thereof, and creating a product model therewith; a facility model creation step S2 for acquiring factory equipment information 21 and worker information 22 and creating a facility model; a process model creation step S3 for, on the basis of the product model and the facility model, clarifying the assembly procedure and tasks for building the finished part and creating a process model; a simulation step S4 for performing a time-evolution simulation on the basis of the process model; and a time-series information conversion step S5 for converting the results of the time-evolution simulation into time-series data to serve as building time-series information 42.

IPC Classes  ?

• G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
• G06Q 50/04 - Manufacturing
• B63B 73/00 - Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
• G06F 30/15 - Vehicle, aircraft or watercraft design
• G06F 30/20 - Design optimisation, verification or simulation

Abstract

This engine abnormality diagnosis method, engine abnormality diagnosis program, and engine abnormality diagnosis system, with which early detection and cause diagnosis of an engine abnormality are performed, involve execution of a step S2 for acquiring an initial state quantity of an engine model 10, a step S3 for applying the initial state quantity and utilizing the engine model 10, a step S4 for obtaining an estimated state quantity using the engine model 10, a step S5 for acquiring a measured state quantity of an engine 1, a step S6 for subjecting the residual error between the measured state quantity and the estimated state quantity to a nonlinear Kalman filter, a step S10 for applying a Kalman gain to the engine model 10 and repeating steps S4–S6, a step S11 for calculating a measured state quantity or a residual error correlation, a step S12 for performing a factor analysis on the measured state quantity or the residual error correlation to derive a factor load quantity, a step S13 for calculating a factor score from the factor load quantity and detecting an abnormality, a step S16 for applying the factor load quantity to machine learning, a step S17 for diagnosing the abnormality on the basis of the machine learning, and a step S18 for outputting the result of diagnosis.

IPC Classes  ?

• F02D 45/00 - Electrical control not provided for in groups

Abstract

Provided are a method for autonomously guiding a vessel, a program for autonomously guiding a vessel, a system for autonomously guiding a vessel, and a vessel with which it is possible to suppress deviations from a planned route to or below a given amount even in the event of noise, without requiring large amounts of calculation.　A method for autonomously guiding a vessel in which there is used an autonomous ship handling device that conducts at least autonomous steering of a sailing vessel, the method having: a planned route generation step S1 for acquiring a planned route or calculating a planned route; a vessel information acquisition step S3 for acquiring the position of the vessel and the bow heading of the vessel; a pure pursuit calculation step S4 for calculating a target point that satisfies a prescribed condition on the advancement-direction planned route of the vessel, or calculating the heading of such a target point, on the basis of the position and the bow heading; an autonomous ship handling calculation step S5 for calculating a steering angle of the vessel on the basis of the target point or heading, and on the basis of the position or bow heading; and a control step S6 for controlling the autonomous ship handling device on the basis of the calculated steering angle.

IPC Classes  ?

• B63H 25/04 - Initiating means for steering automatic, e.g. reacting to compass

Abstract

Objects of the present invention are provide as evaluation method of ship propulsive performance in actual seas, an evaluation program of ship propulsive performance in actual seas and an evaluation. system of ship propulsive performance in actual seas capable of precisely evaluating ship propulsive performance in actual seas on the same scale also before the ship sails for example. As solving means of the objects, a standard sailing model 2 of the ship in actual seas is set, a sailing condition of the ship and a ship condition of the ship are input to the standard sailing model 2, the standard sailing model 2 into which the sailing condition and the ship condition are input and the ship condition are applied to a previously verified calculating method 1 of ship performance is actual seas, and ship propulsive performance in actual seas is evaluated.

IPC Classes  ?

• B63B 79/30 - Monitoring properties or operating parameters of vessels in operation for diagnosing, testing or predicting the integrity or performance of vessels
• B63B 79/15 - Monitoring properties or operating parameters of vessels in operation using sensors, e.g. pressure sensors, strain gauges or accelerometers for monitoring environmental variables, e.g. wave height or weather data
• B63H 21/12 - Use of propulsion power plant or units on vessels the vessels being motor-driven
• B63H 21/21 - Control means for engine or transmission, specially adapted for use on marine vessels

Abstract

When on-water control means 20 having moving means and capable of moving near a water surface controls a multiple underwater vehicles 30 which cruise in water, the moving means 23 controls movement of the on-water control means 20 such that the multiple underwater vehicles 30 are located in a control region X where the on-water control means 20 can position the multiple underwater vehicles 30 utilizing acoustic positioning means 24 provided in the on-water control means 20. According to this, it is possible to deploy and operate the multiple underwater vehicles in water and safely and efficiently carry out survey operation and the like such as water bottom exploration.

IPC Classes  ?

• G05D 1/03 - Control of position or course in two dimensions using near-field transmission systems, e.g. inductive-loop type
• G05D 1/04 - Control of altitude or depth
• G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
• B63B 79/40 - Monitoring properties or operating parameters of vessels in operation for controlling the operation of vessels, e.g. monitoring their speed, routing or maintenance schedules
• B63C 7/02 - Salvaging of disabled, stranded, or sunken vesselsSalvaging of vessel parts or furnishings, e.g. of safesSalvaging of other underwater objects in which the lifting is done by hauling
• B63G 8/00 - Underwater vessels, e.g. submarines
• G05D 1/02 - Control of position or course in two dimensions

Abstract

The present invention provides an operating method and an operating system of a multiple underwater vehicles 30, wherein exploration missions and exploration depths of the multiple underwater vehicles 30 are differently set in the underwater vehicles 30 for exploring a water bottom, the multiple underwater vehicles 30 are submerged to the respective set exploration depths, the multiple underwater vehicles 30 are made to cruise at the respective set exploration depths to execute the exploration missions, and execution results of the exploration missions are recorded and/or transmitted. According to this, it is possible to deploy and operate the multiple underwater vehicles and safely and efficiently explore the water bottom.

IPC Classes  ?

• B63G 8/00 - Underwater vessels, e.g. submarines
• G05D 1/02 - Control of position or course in two dimensions
• G05D 1/10 - Simultaneous control of position or course in three dimensions
• G01S 15/88 - Sonar systems specially adapted for specific applications

Abstract

spspsp; and an engine control step S6 for applying the feedforward control parameters to controlling the engine 10.

IPC Classes  ?

• G05B 11/36 - Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
• F02D 29/02 - Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehiclesControlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving variable-pitch propellers
• G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
• F02D 41/04 - Introducing corrections for particular operating conditions
• B63H 21/21 - Control means for engine or transmission, specially adapted for use on marine vessels
• F02D 45/00 - Electrical control not provided for in groups

Abstract

The present invention addresses the problem of providing: a ship main engine monitoring method capable of monitoring a main engine state with an accuracy comparable to actual measurements, without requiring much actual measurement equipment; a main engine monitoring system; a main engine state prediction system; and an operation status prediction system. In the present invention, a primary measurement value and a setting value pertaining to the operation of a main engine (10) of a ship (A), the setting value being a main engine state parameter serving as an intra-model variable, are applied to a main engine virtual model (40) based on a combination of physical models representing a response for each constituent element of the main engine (10). Calculations are performed with the main engine virtual model (40) to monitor the main engine state of the main engine (10). At least one of the main engine states obtained as a calculation result and the main engine state parameter are used to change the model parameter serving as the intra-model variable and update the main engine virtual model (40).

IPC Classes  ?

• F02D 45/00 - Electrical control not provided for in groups
• B60K 35/00 - Instruments specially adapted for vehiclesArrangement of instruments in or on vehicles
• B63B 49/00 - Arrangements of nautical instruments or navigational aids
• B63H 3/00 - Propeller-blade pitch changing
• B63H 21/21 - Control means for engine or transmission, specially adapted for use on marine vessels
• F02D 29/02 - Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehiclesControlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving variable-pitch propellers

Abstract

The present invention addresses the problem of providing an actual-sea-area propulsion performance evaluation method, actual-sea-area propulsion performance evaluation program, and actual-sea-area propulsion performance evaluation system for ships such that it is possible to accurately evaluate the propulsion performance of a ship in an actual sea area on the same scale, for example, even before operation. As a solution to the above problem, a standard operational model 2 for a ship in an actual sea area is set, the operational conditions and hull conditions of the ship are inputted to the standard operational model 2, the standard operational model 2 with the operational conditions and hull conditions inputted thereto and the hull conditions are applied to an actual-sea-area performance calculation method 1 for ships verified in advance, and the propulsion performance of the ship in the actual sea area is evaluated.

IPC Classes  ?

• B63B 49/00 - Arrangements of nautical instruments or navigational aids
• B63B 9/00 - Methods of designing, building, maintaining, converting, refitting, repairing, or determining properties of, vessels, not otherwise provided for

Abstract

The route setting method is provided with: an underwater waypoint input step for inputting underwater waypoints of the underwater vehicle; a target value setting step for setting initial target values at the underwater waypoints; an underwater navigation simulation step for simulating an underwater navigation route of the underwater vehicle by using water bottom topography data and the target values on the basis of a dynamics model of the underwater vehicle; and a target value update step for updating the target values on the basis of an objective function which is calculated on the basis of the underwater navigation route obtained through the simulation in the underwater navigation simulation step. Optimum target values are derived by repeating the underwater navigation simulation step and the target value update step.

IPC Classes  ?

• G06F 17/00 - Digital computing or data processing equipment or methods, specially adapted for specific functions
• G05D 1/10 - Simultaneous control of position or course in three dimensions
• B63C 11/00 - Equipment for dwelling or working under waterMeans for searching for underwater objects
• G01C 21/20 - Instruments for performing navigational calculations
• G01C 21/00 - NavigationNavigational instruments not provided for in groups
• B63G 8/00 - Underwater vessels, e.g. submarines
• G05D 1/04 - Control of altitude or depth
• G05D 1/08 - Control of attitude, i.e. control of roll, pitch, or yaw

Abstract

When traffic-controlling a plurality of underwater craft 30 that travel underwater, by using an above-water traffic control means 20 having a traveling means that can travel in the vicinity of the water surface, the present invention uses an acoustic positioning means 24 provided in the above-water traffic control means 20 and moves and controls the above-water traffic control means 20 by using a travel means 23, such that the plurality of underwater craft 30 are positioned in a traffic control zone X in which the above-water traffic control means 20 can find the position of the plurality of underwater craft 30. As a result, the plurality of underwater craft can be deployed and operated underwater and submarine exploration and other survey work, etc., can be conducted safely and efficiently.

IPC Classes  ?

• B63C 11/00 - Equipment for dwelling or working under waterMeans for searching for underwater objects
• B63C 11/48 - Means for searching for underwater objects

Abstract

The present invention: sets different exploration missions and exploration depths for a plurality of underwater craft 30 in order to explore an ocean or river floor; causes the plurality of underwater craft 30 to dive to the exploration depth set for each; causes the plurality of underwater craft 30 to travel at the exploration depth set for each and perform the exploration mission set for each; and records and/or transmits the exploration mission results. As a result, the plurality of underwater craft can be deployed and operated underwater and exploration of the ocean or river floor can be conducted safely and efficiently.

IPC Classes  ?

• B63C 11/48 - Means for searching for underwater objects
• B63C 11/00 - Equipment for dwelling or working under waterMeans for searching for underwater objects
• B63C 11/26 - Communication means
• B63G 8/00 - Underwater vessels, e.g. submarines
• G05D 1/00 - Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
• G01V 1/00 - SeismologySeismic or acoustic prospecting or detecting

Abstract

The present invention provides a floating offshore wind turbine capable of suppressing yawing of a nacelle caused by a gyro effect which is a cause of adverse influence of power generating efficiency of a wind turbine and endurance of devices thereof. The floating offshore wind turbine 10 includes a rotor 11 which is rotated by wind, a nacelle 13 in which a rotation shaft 12 of the rotor 11 is accommodated, and a tower 15 including a turning seated bearing 14 which supports the nacelle 13 such that the nacelle 13 can turn with respect to a sea surface P to exert a weathercock effect. The tower is provided with yawing suppressing means 16 which suppresses yawing T of the nacelle 13. According to this, it is possible to suppress the yawing T of the nacelle 13 generated by a gyro effect caused by yawing Ω generated in the floating body 31 by waves of the sea surface P.

IPC Classes  ?

• F03D 13/25 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors specially adapted for offshore installation
• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type
• B63B 1/04 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
• B63B 21/50 - Anchoring arrangements for special vessels, e.g. for floating drilling platforms or dredgers
• B63B 39/00 - Equipment to decrease pitch, roll, or like unwanted vessel movementsApparatus for indicating vessel attitude
• B63B 35/44 - Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
• B63B 39/06 - Equipment to decrease pitch, roll, or like unwanted vessel movementsApparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water

Abstract

A method for realizing a highly practical high-resolution device with a simple configuration is provided in a three-dimensional measurement apparatus based on ultrasonic signals. The present invention realizes a highly practical high-resolution device with a simple configuration by using a low-resolution wide visual-field display and a high-resolution area limiting display in parallel in a configuration where a one-dimensional direction is separated on the basis of a frequency.

IPC Classes  ?

• G01S 7/52 - Details of systems according to groups , , of systems according to group
• G01S 7/521 - Constructional features
• G01S 7/524 - Transmitters
• G01S 7/62 - Cathode-ray tube displays

Abstract

The present invention enables navigation control of an underwater vehicle by setting an optimum underwater navigation route with respect to a reference. The route setting method is provided with: an underwater navigation point input step S12 for inputting underwater navigation points of the underwater vehicle; a target value setting step S14 for setting initial target values at the underwater navigation points; an underwater navigation simulation step S22 for simulating an underwater navigation route of the underwater vehicle by using water bottom topography data and the target values on the basis of a dynamics model of the underwater vehicle; and a target value update step S28 for updating the target values on the basis of an evaluation function which is calculated on the basis of the underwater navigation route obtained through the simulation in the underwater navigation simulation step S22. Optimum target values are derived by repeating the underwater navigation simulation step S22 and the target value update step S28.

IPC Classes  ?

• B63C 11/00 - Equipment for dwelling or working under waterMeans for searching for underwater objects

Abstract

A steering device having two rudder plates vertically suspended at a distance from an outer edge of a propeller. The rudder plates are biaxially arranged and symmetrically rotate around a screw shaft within a propeller radius from a screw shaft center, on a propeller rotation plane, and are turned from aside the propeller to downstream of the propeller by rotation of the steering shafts, each of which is driven independently by two hydraulic driving mechanisms. The steering action of the steering device has two modes: the two-independent mode, where the plates rotate in the same direction, and the two-same direction modes, where the plates move in different directions. A method for steering the same to enhance a thrust flow by increase in a propeller rate is also provided.

IPC Classes  ?

• B63H 25/06 - Steering by rudders
• B63H 25/38 - Rudders
• B63H 5/15 - Nozzles, e.g. Kort-type

Abstract

This stern shape is equipped with a propeller 20 provided to a stern section 15 of a ship hull 10, and a stern duct 30 attached to the front of the propeller 20. The ship hull 10 has a stern in the shape of a V, a duct body 31 of the stern duct 30 has a semi-cylindrical shape, a rear edge 32 of the duct body 31 is shaped to have a parallel section 33 in the middle of an upper section of which a semicircle substantially centered around an axial center 21 of the propeller 20 is shifted to the left and right sides when viewed forward from behind the ship hull 10, the inside radius of the semicircle is set to a range of 40-80% of the radius R of the propeller 20, and the left-to-right horizontal width W of the parallel section 33 is set to 5-25% of the diameter Dp of the propeller 20, whereby maximum transport efficiency is achieved through the effect of interference between the ship hull shape and the propeller.

IPC Classes  ?

• B63H 5/16 - Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in recessesArrangements on vessels of propulsion elements directly acting on water of propellers with stationary water-guiding elementsMeans to prevent fouling of the propeller, e.g. guards, cages or screens
• B63B 1/08 - Shape of aft part

Abstract

Provided are a remote ice-thickness measurement method, a remote ice-strength measurement method, a remote measurement method, a remote ice-thickness measurement device, a remote ice-strength measurement device, and a remote measurement body, whereby the true thickness or strength of ice can be measured without contact therewith at any location by remotely measuring an apparent ice thickness including accumulated snow on the top surface of the ice using an electromagnetic induction sensor, remotely measuring the thickness of the accumulated snow using electromagnetic waves, and calculating the true thickness or strength of the ice on the basis of the apparent ice thickness and the thickness of the accumulated snow.

IPC Classes  ?

• G01B 15/02 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness
• G01B 11/06 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness for measuring thickness
• G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves

Abstract

A ship body structure with a hull structure using a highly ductile steel plate in some or all parts of one or more members of mutually opposed outer plate and inner plate of a ship side portion, the steel plate having been specified to have, and confirmed to satisfy the specification of, a total elongation of not less than 1.4 times a total elongation value according to a unified standard (Unified Requirement W11 Rev. 8 2014) of the International Association of Classification Societies (IACS). Further, it is preferable to use the highly ductile steel plate in a stiffener associated with a portion (the outer plate or the inner plate) using the steel plate.

IPC Classes  ?

• B63B 43/18 - Improving safety of vessels, e.g. damage control, not otherwise provided for preventing collisionImproving safety of vessels, e.g. damage control, not otherwise provided for reducing collision damage
• B63B 3/16 - Shells
• B63B 3/20 - Shells of double type
• B63B 3/34 - Frames of longitudinal typeBulkhead connections
• B63B 3/48 - Decks

Abstract

[Problem] To provide a steering device provided with a rudder which is not disposed behind a propeller slipstream and which is quiet while achieving high propulsion efficiency for achieving a CO2 reduction target and ensuring turning performance even at low vessel speed, the rudder being capable of being utilized for braking a ship. [Solution] A steering device includes a drive mechanism that rotates a rudder shaft and a power mechanism that drives the drive mechanism, and is characterized in that the rudder shaft includes two shafts rotatably disposed above and on both sides of a screw shaft, each of the rudder shafts being connected to an upper part of a rudder plate and hanging the rudder plate, the two rudder plates being capable of being turned from the side of a propeller into the propeller slipstream by the rotation of the two rudder shafts.

IPC Classes  ?

• B63H 25/38 - Rudders
• B63H 25/26 - Steering engines
• B63H 25/30 - Steering engines of fluid type hydraulic

Abstract

The present invention provides a floating offshore wind turbine capable of suppressing yawing of a nacelle caused by a gyro effect which is a cause of adverse influence of power generating efficiency of a wind turbine and endurance of devices thereof. The floating offshore wind turbine includes a rotor which is rotated by wind, a nacelle in which a rotation shaft of the rotor is accommodated, and a tower including a turning seated bearing which supports the nacelle such that the nacelle can turn with respect to a sea surface to exert a weathercock effect. The tower is provided with yawing suppressing means which suppresses yawing of the nacelle. According to this, it is possible to suppress the yawing of the nacelle generated by a gyro effect caused by yawing generated in the floating body by waves of the sea surface.

IPC Classes  ?

• F03B 17/06 - Other machines or engines using liquid flow, e.g. of swinging-flap type
• F03D 13/25 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors specially adapted for offshore installation
• B63B 1/04 - Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with single hull
• B63B 21/50 - Anchoring arrangements for special vessels, e.g. for floating drilling platforms or dredgers
• B63B 39/00 - Equipment to decrease pitch, roll, or like unwanted vessel movementsApparatus for indicating vessel attitude
• B63B 35/44 - Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
• B63B 39/06 - Equipment to decrease pitch, roll, or like unwanted vessel movementsApparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water

Abstract

A inject gas control device that performs, for example, control reflecting variation in vessel velocity over time without adversely affecting the main engine is realized. That is, it is prevented that gas is drawn too much and thereby a gas supply or charged air rate becomes insufficient, efficiency of the main engine is decreased and exhaust gas is deteriorated, and analogous events occur because the gas supply or charged air rate is too much instead. There are provided a main engine 4010 acquiring propelling power for a vessel 1, and a turbocharger 4011 that is driven by exhaust gas from the main engine 4010 and blows pressurized gas to the main engine 4010. A part of the pressurized gas and/or exhaust gas is drawn from between the turbocharger 4011 and the main engine 4010 (5023, 5024 and 5025). The drawn pressurized gas and/or exhaust gas are injected in the proximity 9 of the hull on or below the waterline (5040), and the drawing rate of the pressurized gas and/or the exhaust gas is controlled on the basis of a physical quantity related to a heat load on the main engine 10 and characteristics of the turbocharger (4200).

IPC Classes  ?

• B63B 1/38 - Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers