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EP3353764A1 - Alarm device for ships - Google Patents

Alarm device for ships

Info

Publication number
EP3353764A1
EP3353764A1 EP16787941.0A EP16787941A EP3353764A1 EP 3353764 A1 EP3353764 A1 EP 3353764A1 EP 16787941 A EP16787941 A EP 16787941A EP 3353764 A1 EP3353764 A1 EP 3353764A1
Authority
EP
European Patent Office
Prior art keywords
fully automatic
vessel
sailing
coastline
coordinates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP16787941.0A
Other languages
German (de)
French (fr)
Inventor
Hordur BENEDIKTSSON
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Strandsyn Ehf
Original Assignee
Strandsyn Ehf
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Strandsyn Ehf filed Critical Strandsyn Ehf
Publication of EP3353764A1 publication Critical patent/EP3353764A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G3/00—Traffic control systems for marine craft
    • G08G3/02—Anti-collision systems

Definitions

  • the present invention relates to a fully automatic device and method for use on board ships/boats to prevent collision or stranding.
  • GPS Global Positioning System
  • AIS automatic information systems
  • US 2011144912 discloses a system and a method for increased safety of a vessel using a mobile terminal device as a less costly alternative to high-price exclusive marine equipment. This is achieved by utilizing radio communication function and location tracking function of a mobile terminal device for small and medium-sized vessels to rapidly and accurately display a vessel which is in a collision risk and allow a user to specifically recognize a collision preventing alarm so as to prevent collisions of the vessels.
  • This system is for use within a fleet which is not using the traditional AIS systems and is used within that fleet.
  • GB 2505121 presents an electronic navigation device for marine vessel navigation in tidal waters.
  • the device comprises means for determining the position, speed, and direction of the vessels; means for calculating predicted arrival time at points in a monitored zone; means for calculating expected water depth at points in the monitored zone; and means for determining whether the expected water depth is sufficient for safe passage of the marine vessel.
  • the device is further arranged to determine when an expected water depth in a forward direction of the marine vessel is insufficient for safe passage of the marine vessel and at what required speed the expected water depth at the predicted arrival time will be sufficient for safe passage.
  • the present invention provides a solution in a fully automatic device for use on board ships/boats to guard against possible stranding and has the great benefits of not having to be adjusted by the crew and being completely passive if there is no danger of a stranding or collision.
  • the present invention provides a solution in a device, system and method for preventing ships or boats from stranding along the coastline in case the controller of the ship falls asleep or temporarily is absent from the control room without issuing false alarms.
  • the present invention further provides a device and method that does not need to be set or adjusted every time the controller of a vessel would like to make the route ahead secure.
  • the device and method of the invention is able to identify dangerous conditions from harmless conditions and does not issue an alarm if a vessel is being steered along a traditional7defined harbour approach or into a harbour and an alarm is delayed if the speed is reduced or course is changed as a vessel is heading for the coast or another ship.
  • the device and method do not issue an alarm if the vessel is being operated as a fishing vessel at a low speed around other ships. This is further secured by a motion detector connected to the device which detects constant motion in the control room during fishing.
  • the device and method also have a learning function in that information regarding coordinates of a new harbour, coastline or depth information can be collected and stored in a database.
  • the method comprises collecting real-time data for i) GPS coordinates for the vessel, ii) direction of sailing, and iii) speed of the vessel, calculating a distance to a collision point using the collected real-time data, a GPS map of the coastline and harbours, where the GPS map comprises i) coordinates for the coastline, islands and reefs, ii) coordinates for harbour approach, and iii) coordinates for harbour structures and depth information of water around the coastline including tidal data.
  • the method further comprises
  • the present invention provides a new a device that automatically differentiates between a safe course and a course that can result in stranding. To be able to do so, the device or system has GPS coordinates on the coastline and harbours in the relevant area if operation. It also has information on traditional routes to all these harbours. In that way the device gives no alarm even though the ship is very close to land if it follows a traditional route or approach to a harbour. The device will not give an alarm when the ship docks at a harbour.
  • a fully automatic device and a system for prevention of stranding or collision of vessels during sailing comprises computing means, a circuit board, and a connection to a GPS device for collecting real-time data for i) GPS coordinates for the current positon of the vessel, ii) direction of sailing, and iii) speed of the vessel through the GPS device.
  • the device calculates a distance to a collision point using the collected real-time data, the depth information of waters around the coastline including tidal data, and a GPS map of the coastline and harbours, where the GPS map comprises i) coordinates for the coastline, islands and reefs, ii) coordinates for harbour approach, and iii) coordinates for harbour structures.
  • the device determines the risk of collision using the calculation of distance to a collision point.
  • the device also comprises an alarming means, which is activated when the risk of collision, is below a set parameter, and not activating said alarming means during docking in a harbour.
  • the fully automatic device for prevention of stranding or collision of vessels during sailing comprises computing means, a circuit board, a connection to a GPS device, and an alarming means, wherein the device performs the steps of the method of the present invention.
  • computing means refers to any computer to calculate the risk of stranding or colliding based on GPS maps and bathymetric maps and using the bearing of a vessel and speed.
  • the term "fully automatic” refers to that the device is always operational during sailing of a vessel and does not need to be set or adjusted to make the route ahead secure.
  • the device is always collecting GPS data regarding the position and course of the vessel and comparing to GPS maps of the area and the alarm means is always active.
  • predetermined time period refers to a programmed length of time for the controller of the vessel that is needed to avoid collision by reducing speed and changing course of the vessel.
  • the term "harbour approach” refers to a coastline, fjords, buoys and outer harbour structures defining the route of a ship or boat to a harbour.
  • the term “harbour structures” refers to structures making up a harbour where ships are tied.
  • set parameter refers to a calculated length of time sufficient for getting the attention of the controller and for reducing speed and/or changing course of the vessel to avoid collision.
  • unknown coordinate refers to coordinates obtained from an AIS system, such as but not limited to coordinates of other vessels in the vicinity of the vessel using the method or device of the invention.
  • shared database refers to a database run by
  • authorities such as governmental authorities and where all vessels have access to the database.
  • the alarm means signals a gradually increasing alarm.
  • the alarm means is not activated when sailing near coordinates of harbour approach.
  • the alarm means signals a short alarm when the distance to a coordinate of a harbour structure is below a set parameter.
  • the device uses sea depth information and gives an alarm if the ship is heading towards shallow waters, before the ship's depth recorder recognises it, taking into account tidal information [tide tables].
  • real-time data is also collected from an AIS (Automatic Identification System) device to give coordinates of other vessels and the alarm means is activated when the distance to a collision point of a coordinate of another vessel is below a set parameter.
  • AIS Automatic Identification System
  • activation of the alarm means is delayed if speed is reduced and/or direction of sailing is changed after passing a point when a vessel is sailing towards an unknown coordinate or a known coordinate of a coastline. In an embodiment of the present invention activation of the alarm means is delayed if speed is reduced and/or direction of sailing is changed after passing a point when the distance to a collision point of an unknown coordinate or a known coordinate of a coastline is below a set parameter.
  • the alarm means is activated when a vessel is sailing towards an unknown coordinate or a known coordinate of a coastline without reducing speed and/or changing the direction of sailing.
  • activation of the alarm means is delayed if the vessel is sailing at a low speed around one or more vessels fishing or towing in the same area of an ocean.
  • the alarm means is activated when the vessel is heading towards coordinates of a coastline and no motion is detected near control devices of the vessel for a predetermined time period.
  • the activation of the alarm means is delayed if motion is detected near control devices of the vessel when the vessel is sailing towards an unknown coordinate or a known coordinate of a coastline or towards another vessel.
  • the method further comprising collecting depth information for all the GPS coordinates of its sailing and storing it in a shared database.
  • the computing means is a computer such as, but not limited to a single-board computer running Linux.
  • the device further comprises an interface.
  • the interface is a touch-screen.
  • the alarm means is a sound alarming means and/or a visual alarming means.
  • the device further comprises a connection to an AIS device.
  • connection to the GPS device and/or the AIS device is an RS422, RS485, RS232 (NMEA 0183 protocol) or CAN bus (NMEA 2000 protocol).
  • the set parameter is a certain time before calculated collision or stranding based on the speed of the vessel.
  • the apparatus further comprises a motion sensor for detecting motion in the control room.
  • the device learns and stores in memory a new harbour or mooring and the sailing route to that harbour/mooring using depth information at that location.
  • the device comprises information on all harbours and traditional sailing routes to all the harbours where a vessel is operating.
  • the device uses information from the AIS device and signals an alarm before the vessel collides with another vessel based on its calculations.
  • the device does not have to be adjusted by the crew of a vessel and is passive if there is no danger of a stranding or collision.
  • the device gives a warning signal for fishing vessels based on GPS coordinates for one or more of a coastline, shallow waters, reefs, sea cages, ship wrecks or the like.
  • the GPS coordinates stored in the computing means is a coordinate for one or more of: channel into a harbour, a wharf, ship wrecks or the like.
  • the device can be adjusted such that a signal is not generated if the distance or time to a coordinate is from a coordinate belonging to a wharf or a harbour, a weak signal is generated if the signal belongs to a channel or an approach into a harbour, but a strong signal is generated if the coordinate belongs to the coastline.
  • the device can be set such that based on bearing and speed of the vessel, an alarm signal is generated at a certain distance or time before a collision or strand occurs.
  • the device further comprises a motion sensor for detecting movement in the bridge of the vessel. If no motion is detected a warning signal may be issued earlier or stronger than if there is movement in the bridge.
  • the device comprises a port for internet connection.
  • the internet connection may be used to feed new information into the computer of the device and to supply a shared database with information on depth of waters.
  • the internet connection is turned on each time a vessel enters a harbour for receiving new information.
  • Figure 1 shows a diagram of the device indicating a printed circuit board with isolation for the communication ports.
  • the device has three ports, one for a GPS device, the second for an AIS device and the third one for a depth sounder.
  • the ports can have any communications standard, but the standards indicated here are RS422, RS485, RS232 (NMEA 0183 protocol) and CAN bus (NMEA 2000 protocol).
  • the printed circuit board is connected to a single-board computer, which holds GPS maps/information for the area/country/countries which the vessel is operating in/around.
  • the computer also comprises information about the depth along the coastline, islands, reefs, harbours, wharfs, harbour approaches, ship wrecks and calculates risk of collision or stranding based on this information stored on the computer.
  • the device uses information such as bearing and speed of vessel to calculate the risk of collision or stranding based on information about depths around the coastline and the GPS
  • the device described in Fig. l has a touch screen to insert parameters or adjust the device and read information from.
  • Figure 2 shows an example of a ship being sailed along a coastline.
  • the automatic control system of the ship is set at a planned route to a certain waypoint and if the controller does not set a new waypoint at that time the ship sails in circles around the waypoint until an action is taken or a new waypoint is set. In this case the controller of the ship is not paying attention or might have fallen asleep and the wind alters the actual route of the ship.
  • the ship is heading for the coastline, but when the ship enters the alarm zone, calculated by the method and device of the invention, an alarm is signalled and it is done with sufficient time to reduce speed and or change direction of sailing to avoid stranding.
  • the present invention covers further embodiments with any combination of features from different embodiments described above. Reference signs in the claims are provided merely as a clarifying example and shall not be construed as limiting the scope of the claims in any way.
  • the present invention also covers the exact terms, features, values and ranges etc. in case these terms, features, values and ranges etc. are used in conjunction with terms such as about, around, generally, substantially, essentially, at least etc. (i.e., "about 3” shall also cover exactly 3 or “substantial constant” shall also cover exactly constant).
  • the terms “a”, “an”, “first”, “second” etc do not preclude a plurality.

Landscapes

  • Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)

Abstract

The present invention relates to a device for use on board ships/boats to guard against possible stranding. The present invention provides a new method and a device that automatically differentiates between a safe course and a course that can result in stranding. The device gives no alarm even though the ship is very close to land if it follows a traditional route to harbour.

Description

ALARM DEVICE FOR SHIPS
Field of the Invention
The present invention relates to a fully automatic device and method for use on board ships/boats to prevent collision or stranding. Background of the Invention
Every now and then ships or boats strand on the coastline in shallow water or on reefs due to the fact that the person steering the vessel falls asleep. Just on the shores of Iceland this number is around 30 since the Millennium. Most ships have a GPS (Global Positioning System) chart plotter that displays a navigational chart along with the position, heading and speed of the ship and may display additional information from radar, automatic information systems (AIS) or other sensors. The main purpose of such instruments is to assist the ship operator to sail the boat where the alarming feature is an additional function.
Although ships and boats today are equipped with such modern technology and instruments, stranding or collisions can still happen if the ship operator drops his guard, for example by falling asleep. In many cases alarm devices, such as motion detectors in control rooms of ships, are turned off or not activated because their alarm function is constantly being activated when sailing safely along the coast. Furthermore, even if these instruments have their alarm function activated, they signal the alarm too late as the vessel is already in shallow water and can't be turned around before it strands.
US 2011144912 discloses a system and a method for increased safety of a vessel using a mobile terminal device as a less costly alternative to high-price exclusive marine equipment. This is achieved by utilizing radio communication function and location tracking function of a mobile terminal device for small and medium-sized vessels to rapidly and accurately display a vessel which is in a collision risk and allow a user to specifically recognize a collision preventing alarm so as to prevent collisions of the vessels. This system is for use within a fleet which is not using the traditional AIS systems and is used within that fleet.
GB 2505121 presents an electronic navigation device for marine vessel navigation in tidal waters. The device comprises means for determining the position, speed, and direction of the vessels; means for calculating predicted arrival time at points in a monitored zone; means for calculating expected water depth at points in the monitored zone; and means for determining whether the expected water depth is sufficient for safe passage of the marine vessel. The device is further arranged to determine when an expected water depth in a forward direction of the marine vessel is insufficient for safe passage of the marine vessel and at what required speed the expected water depth at the predicted arrival time will be sufficient for safe passage. There is a lack of simple systems and devices which are an addition to current navigation instruments, which are fully automatic and do not require adjustment and settings prior to every route. Furthermore, there is a need for a system and device which issues an alarm when a vessel is heading for collision with a coast, reef or an island or even other ships in case the controller of the vessel falls asleep without sending our false alarms when the vessel is being safely operated in close proximity of a coast, vessel or harbour structures.
Summary of the Invention
It is an object of the present invention to overcome or ameliorate the aforementioned drawbacks of the prior art and to provide an improved and/or alternative and/or additional fully automatic method, system and device for prevention of stranding or collision of vessels during sailing. It is one preferred object of the present invention to provide a device in order to facilitate an alarm signal before a vessel strands or collides with a reef or a ship. Moreover, it is a preferred object of the present invention to provide a device, preferably designed with an interface to set risk parameters and a computer for GPS maps and bathymetric maps to calculate the risk for stranding or collision based on GPS coordinates, speed and direction of sailing. The present invention provides a solution in a fully automatic device for use on board ships/boats to guard against possible stranding and has the great benefits of not having to be adjusted by the crew and being completely passive if there is no danger of a stranding or collision. The present invention provides a solution in a device, system and method for preventing ships or boats from stranding along the coastline in case the controller of the ship falls asleep or temporarily is absent from the control room without issuing false alarms. The present invention further provides a device and method that does not need to be set or adjusted every time the controller of a vessel would like to make the route ahead secure. The device and method of the invention is able to identify dangerous conditions from harmless conditions and does not issue an alarm if a vessel is being steered along a traditional7defined harbour approach or into a harbour and an alarm is delayed if the speed is reduced or course is changed as a vessel is heading for the coast or another ship. The device and method do not issue an alarm if the vessel is being operated as a fishing vessel at a low speed around other ships. This is further secured by a motion detector connected to the device which detects constant motion in the control room during fishing. The device and method also have a learning function in that information regarding coordinates of a new harbour, coastline or depth information can be collected and stored in a database.
The object(s) underlying the present invention is (are) particularly solved by the features defined in the independent claims. The dependent claims relate to preferred
embodiments of the present invention. Further additional and/or alternative aspects are discussed below.
Thus, at least one of the preferred objects of the present invention is solved by a fully automatic method for prevention of stranding or collision of vessels during sailing. The method comprises collecting real-time data for i) GPS coordinates for the vessel, ii) direction of sailing, and iii) speed of the vessel, calculating a distance to a collision point using the collected real-time data, a GPS map of the coastline and harbours, where the GPS map comprises i) coordinates for the coastline, islands and reefs, ii) coordinates for harbour approach, and iii) coordinates for harbour structures and depth information of water around the coastline including tidal data. The method further comprises
determining the risk of collision using the calculation of distance to a collision point and activating an alarming means when the risk of collision, based on a GPS coordinate of a coastline, is below a set parameter, and not activating said alarming means during docking in a harbour. The present invention provides a new a device that automatically differentiates between a safe course and a course that can result in stranding. To be able to do so, the device or system has GPS coordinates on the coastline and harbours in the relevant area if operation. It also has information on traditional routes to all these harbours. In that way the device gives no alarm even though the ship is very close to land if it follows a traditional route or approach to a harbour. The device will not give an alarm when the ship docks at a harbour.
In an embodiment of the present invention a fully automatic device and a system for prevention of stranding or collision of vessels during sailing is provided. The device comprises computing means, a circuit board, and a connection to a GPS device for collecting real-time data for i) GPS coordinates for the current positon of the vessel, ii) direction of sailing, and iii) speed of the vessel through the GPS device. The device calculates a distance to a collision point using the collected real-time data, the depth information of waters around the coastline including tidal data, and a GPS map of the coastline and harbours, where the GPS map comprises i) coordinates for the coastline, islands and reefs, ii) coordinates for harbour approach, and iii) coordinates for harbour structures. The device then determines the risk of collision using the calculation of distance to a collision point. The device also comprises an alarming means, which is activated when the risk of collision, is below a set parameter, and not activating said alarming means during docking in a harbour.
In an embodiment of the present invention the fully automatic device for prevention of stranding or collision of vessels during sailing comprises computing means, a circuit board, a connection to a GPS device, and an alarming means, wherein the device performs the steps of the method of the present invention.
The following definitions and embodiments relate to the method, system and the apparatus of the invention. In the present context the term "computing means" refers to any computer to calculate the risk of stranding or colliding based on GPS maps and bathymetric maps and using the bearing of a vessel and speed.
In the present context the term "fully automatic" refers to that the device is always operational during sailing of a vessel and does not need to be set or adjusted to make the route ahead secure. The device is always collecting GPS data regarding the position and course of the vessel and comparing to GPS maps of the area and the alarm means is always active.
In the present context the term "predetermined time period" refers to a programmed length of time for the controller of the vessel that is needed to avoid collision by reducing speed and changing course of the vessel.
In the present context the term "harbour approach" refers to a coastline, fjords, buoys and outer harbour structures defining the route of a ship or boat to a harbour.
In the present context the term "harbour structures" refers to structures making up a harbour where ships are tied. In the present context the term "set parameter" refers to a calculated length of time sufficient for getting the attention of the controller and for reducing speed and/or changing course of the vessel to avoid collision.
In the present context the term "unknown coordinate" refers to coordinates obtained from an AIS system, such as but not limited to coordinates of other vessels in the vicinity of the vessel using the method or device of the invention. In the present context the term "shared database" refers to a database run by
authorities such as governmental authorities and where all vessels have access to the database.
In an embodiment of the present invention the alarm means signals a gradually increasing alarm.
In an embodiment of the present invention the alarm means is not activated when sailing near coordinates of harbour approach.
In an embodiment of the present invention the alarm means signals a short alarm when the distance to a coordinate of a harbour structure is below a set parameter. In an embodiment of the present invention the device uses sea depth information and gives an alarm if the ship is heading towards shallow waters, before the ship's depth recorder recognises it, taking into account tidal information [tide tables].
In an embodiment of the present invention real-time data is also collected from an AIS (Automatic Identification System) device to give coordinates of other vessels and the alarm means is activated when the distance to a collision point of a coordinate of another vessel is below a set parameter.
In an embodiment of the present invention activation of the alarm means is delayed if speed is reduced and/or direction of sailing is changed after passing a point when a vessel is sailing towards an unknown coordinate or a known coordinate of a coastline. In an embodiment of the present invention activation of the alarm means is delayed if speed is reduced and/or direction of sailing is changed after passing a point when the distance to a collision point of an unknown coordinate or a known coordinate of a coastline is below a set parameter.
In an embodiment of the present invention the alarm means is activated when a vessel is sailing towards an unknown coordinate or a known coordinate of a coastline without reducing speed and/or changing the direction of sailing.
In an embodiment of the present invention activation of the alarm means is delayed if the vessel is sailing at a low speed around one or more vessels fishing or towing in the same area of an ocean. In an embodiment of the present invention the alarm means is activated when the vessel is heading towards coordinates of a coastline and no motion is detected near control devices of the vessel for a predetermined time period. In an embodiment of the present invention the activation of the alarm means is delayed if motion is detected near control devices of the vessel when the vessel is sailing towards an unknown coordinate or a known coordinate of a coastline or towards another vessel.
In an embodiment of the present invention the method further comprising collecting depth information for all the GPS coordinates of its sailing and storing it in a shared database.
In an embodiment of the present invention the computing means is a computer such as, but not limited to a single-board computer running Linux.
In an embodiment of the present invention the device further comprises an interface.
In an embodiment of the present invention the interface is a touch-screen.
In an embodiment of the present invention the alarm means is a sound alarming means and/or a visual alarming means.
The fully automatic device according to claims 14-21, wherein the device is connected to horns and other alarming means on board the vessel.
In an embodiment of the present invention the device further comprises a connection to an AIS device.
In an embodiment of the present invention the connection to the GPS device and/or the AIS device is an RS422, RS485, RS232 (NMEA 0183 protocol) or CAN bus (NMEA 2000 protocol).
In an embodiment of the present invention the set parameter is a certain time before calculated collision or stranding based on the speed of the vessel.
In an embodiment of the present invention the apparatus further comprises a motion sensor for detecting motion in the control room.
In an embodiment of the present invention the device learns and stores in memory a new harbour or mooring and the sailing route to that harbour/mooring using depth information at that location.
In an embodiment of the present invention the device comprises information on all harbours and traditional sailing routes to all the harbours where a vessel is operating. In an embodiment of the present invention the device uses information from the AIS device and signals an alarm before the vessel collides with another vessel based on its calculations.
In an embodiment of the present invention the device does not have to be adjusted by the crew of a vessel and is passive if there is no danger of a stranding or collision.
In an embodiment of the present invention the device gives a warning signal for fishing vessels based on GPS coordinates for one or more of a coastline, shallow waters, reefs, sea cages, ship wrecks or the like.
In an embodiment of the present invention the GPS coordinates stored in the computing means is a coordinate for one or more of: channel into a harbour, a wharf, ship wrecks or the like.
In an embodiment of the present invention the device can be adjusted such that a signal is not generated if the distance or time to a coordinate is from a coordinate belonging to a wharf or a harbour, a weak signal is generated if the signal belongs to a channel or an approach into a harbour, but a strong signal is generated if the coordinate belongs to the coastline.
In an embodiment of the present invention the device can be set such that based on bearing and speed of the vessel, an alarm signal is generated at a certain distance or time before a collision or strand occurs. In an embodiment of the present invention the device further comprises a motion sensor for detecting movement in the bridge of the vessel. If no motion is detected a warning signal may be issued earlier or stronger than if there is movement in the bridge.
In an embodiment of the present invention the device comprises a port for internet connection. The internet connection may be used to feed new information into the computer of the device and to supply a shared database with information on depth of waters. In an embodiment of the present invention the internet connection is turned on each time a vessel enters a harbour for receiving new information.
Detailed description of the Invention
The invention will now be described in relation to the drawings to indicate the different components of the invention.
Figure 1 shows a diagram of the device indicating a printed circuit board with isolation for the communication ports. In the embodiment shown in Fig . 1, the device has three ports, one for a GPS device, the second for an AIS device and the third one for a depth sounder. The ports can have any communications standard, but the standards indicated here are RS422, RS485, RS232 (NMEA 0183 protocol) and CAN bus (NMEA 2000 protocol). The printed circuit board is connected to a single-board computer, which holds GPS maps/information for the area/country/countries which the vessel is operating in/around. The computer also comprises information about the depth along the coastline, islands, reefs, harbours, wharfs, harbour approaches, ship wrecks and calculates risk of collision or stranding based on this information stored on the computer. The device uses information such as bearing and speed of vessel to calculate the risk of collision or stranding based on information about depths around the coastline and the GPS
coordinates. The device described in Fig. l has a touch screen to insert parameters or adjust the device and read information from.
Figure 2 shows an example of a ship being sailed along a coastline. The automatic control system of the ship is set at a planned route to a certain waypoint and if the controller does not set a new waypoint at that time the ship sails in circles around the waypoint until an action is taken or a new waypoint is set. In this case the controller of the ship is not paying attention or might have fallen asleep and the wind alters the actual route of the ship. The ship is heading for the coastline, but when the ship enters the alarm zone, calculated by the method and device of the invention, an alarm is signalled and it is done with sufficient time to reduce speed and or change direction of sailing to avoid stranding.
The present invention covers further embodiments with any combination of features from different embodiments described above. Reference signs in the claims are provided merely as a clarifying example and shall not be construed as limiting the scope of the claims in any way. The present invention also covers the exact terms, features, values and ranges etc. in case these terms, features, values and ranges etc. are used in conjunction with terms such as about, around, generally, substantially, essentially, at least etc. (i.e., "about 3" shall also cover exactly 3 or "substantial constant" shall also cover exactly constant). The terms "a", "an", "first", "second" etc do not preclude a plurality.

Claims

ims
A fully automatic method for prevention of stranding or collision of vessels during sailing, the method comprising :
o collecting real-time data for:
• GPS coordinates for the current positon of the vessel,
• direction of sailing, and
• speed of the vessel,
- calculating a distance to a collision point using :
• the collected real-time data
• a GPS map of the coastline and harbours, the GPS map comprising :
- coordinates for the coastline, islands and reefs,
- coordinates for harbour approach, and
- coordinates for harbour structures,
• depth information of water around the coastline including tidal data, o determining the risk of collision using the calculation of distance to a collision point, speed and direction of sailing, characterised in activating an alarming means when the risk of collision, based on GPS coordinates of the coastline, is below a set parameter, and in that the alarming means is not activated during docking in a harbour.
The fully automatic method according to claim 1, wherein the alarm means signals a gradually increasing alarm.
The fully automatic method according to claims 1 or 2, wherein the alarm means is not activated when sailing near coordinates of a harbour approach.
The fully automatic method according to claim 3, wherein the alarm means signals a short alarm when the distance to a coordinate of a harbour structure is below a set parameter.
The fully automatic method according to any of the preceding claims, wherein realtime data is also collected from an AIS system to give coordinates of other vessels and the alarm means is activated when the distance to a collision point of a coordinate of another vessel is below a set parameter.
6. The fully automatic method according to claim 5, wherein activation of the alarm means is delayed if speed is reduced and/or direction of sailing is changed after passing a point when the distance to a collision point of a coordinate of another vessel is below a set parameter.
. The fully automatic method according to any of the preceding claims, wherein alarm means is activated when a vessel is sailing towards an unknown coordinate or a known coordinate of a coastline without reducing speed and/or changing the direction of sailing.
. The fully automatic method according to any of the preceding claims, wherein activation of the alarm means is delayed if speed is reduced and/or direction of sailing is changed when the distance to a collision point of an unknown coordinate or a known coordinate of a coastline is below a set parameter.
. The fully automatic method according to any of the preceding claims, wherein activation of the alarm means is delayed if the vessel is sailing at a low speed around one or more vessels fishing or towing in the same area of an ocean.
0. The fully automatic method according to any of the preceding claims, wherein alarm means is activated when the vessel is heading towards coordinates of a coastline and no motion is detected near control devices of the vessel for a predetermined time period.
1. The fully automatic method according to any of the preceding claims, wherein activation of the alarm means is delayed if motion is detected near control devices of the vessel when the vessel is sailing towards an unknown coordinate or a known coordinate of a coastline or towards another vessel.
2. The fully automatic method according to claim 1, the method further comprising collecting depth information for all the GPS coordinates of its sailing and storing the information in a shared database.
3. A fully automatic device for prevention of stranding or collision of vessels during sailing, the device comprising :
- computing means,
- a circuit board, and
- a connection to a GPS device,
wherein the computing means and the circuit board :
o collect real-time data for: • GPS coordinates for the current positon of the vessel,
• direction of sailing, and
• speed of the vessel,
through the GPS device,
- calculate a distance to a collision point using :
• the collected real-time data
• a GPS map of the coastline and harbours, the GPS map comprising :
- coordinates for the coastline, islands and reefs,
- coordinates for harbour approach,
- coordinates for harbour structures
• the depth information of water around the coastline including tidal data, and
o determines the risk of collision using the calculation of distance to a collision point,
- alarming means, said alarming means being activated when the risk of collision, based on a GPS coordinate of a coastline, is below a set parameter, and not activating said alarming means during docking in a harbour.
14. The fully automatic device according to claim 13, wherein the device further
comprises an interface.
15. The fully automatic device according to claims 13-14 wherein the computing means is a single-board computer running Linux. 16. The fully automatic device according to claims 13-15, wherein the interface is a touch-screen.
17. The fully automatic device according to claims 13-16, wherein the alarm means is a sound alarming means.
18. The fully automatic device according to claims 13-17, wherein the alarm means is a visual alarming means.
19. The fully automatic device according to claims 13-18, wherein the device further comprises a connection to an AIS device.
20. The fully automatic device according to claims 13-19, wherein the connection to the GPS device and/or the AIS device is an RS422, RS485, RS232 (NMEA 0183 protocol) or CAN bus (NMEA 2000 protocol).
21. The fully automatic device according to claims 13-20, wherein the device is
connected to horns and other alarming means on board the vessel.
22. The fully automatic device according to claims 13-21, wherein the apparatus further comprises a motion sensor for detecting motion in the control room.
EP16787941.0A 2015-09-22 2016-09-22 Alarm device for ships Pending EP3353764A1 (en)

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IS9071 2015-09-22
PCT/IS2016/050018 WO2017051438A1 (en) 2015-09-22 2016-09-22 Alarm device for ships

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US11480965B2 (en) 2010-11-19 2022-10-25 Maid Ip Holdings Pty/Ltd Automatic location placement system
FR3070525B1 (en) * 2017-08-30 2021-03-05 Alban Sailly SAFETY LOCATION 300
CN113012474B (en) * 2021-02-07 2022-04-19 中电科（宁波）海洋电子研究院有限公司 Wave glider collision avoidance method for fishing boat operation area
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