AIS+ Meteorological and hydrographic data

 

1. Brief Description (PP Pres or 1-2 page info paper)

Display of Meteorological and hydrographic data on a separate PC screen onboard a ship

 

See: Markus Porthin, Robin Berglund and Lauri Seitsonen: AIS+ - facilitating on board use of AIS Application-Specific Messages. Proceedings of E-Navigation Underway Conference, Copenhagen, Denmark and Olso, Norway, 31 January - 2 February, 2011, pp. 41 - 48. (Included in e-NAV9-INF8.)

 

- Display type ( such as RADAR, ECDIS, ECS or Head up display)

 

2. Functional Capabilities (types of data information content)

 

AIS+ is an application for receiving and sending AIS ASMs using a user-friendly user interface. The software can be run on a normal PC connected to the AIS transmitter through the Pilot plug. AIS+ reads AIS messages from the serial or USB port of the computer, decodes them and visualizes the information content. It also codes user inputs into AIS ASM messages and sends them to the AIS transmitter for transmission. The ASMs currently implemented in AIS+ are: Meteorological and hydrological data (FI = 11, FI = 31), Area notice (FI = 22 and 23) (receiving), Number of persons on board (FI = 16), Dangerous cargo indication (FI = 25) and Area notice (sending) [2], [3], all defined under the international designated area code (DAC = 1).

The main view of the AIS+ program is shown in the figure below. The map view shows the vessel’s current own position with a black circle. The location information is retrieved from the vessels own position report AIS messages and the map by default follows the vessel. The map also shows major place-names and lighthouses depending on the zoom level of the map. The wind barbs with an attached wind speed and direction display show the current wind gust at available weather observation stations.

By clicking the wind information on the main display one can see the observation history at the weather station as shown in the figure below. The history data is logged by AIS+ from the real time observations received as ASMs. Currently the Finnish weather stations transmit average wind, wind gust, air pressure and relative humidity observations and the user can select which data is shown in the graph. The dialog shows the observation graphs for the last 24 hours. The latest received data for the other weather parameters defined in the met/hydro message (FI = 11, FI = 31) can also be viewed, but a graphical display of them is currently not implemented.

3. Intended Purpose (including benefits)

Display of meteorological and hydrographic information

 

4. Portrayal examples (means or methods of portrayal)

a) good examples

  • Graphic display in a chart gives the mariner real time wind speed and direction directly linked to a geographical position.

  • Usage of standard wind barbs

  • Information both as symbol (wind barbs), alphanumeric and time series graph

  • Additional information including 24h history graph is received by clicking the symbol. History fluctuation easily spotted at a glance.

b) lessons-learned

  • Information displayed in multiple ways pleases users with different preferences

  • Both advantages and disadvantages in having the weather information on a separate screen. Some real time information could also be integrated in ECDIS on demand.

c) some concerns

 

Risk for cluttering if displayed on ECDIS

 

 

 

 AIS+ Area notice

 

1. Brief Description (PP Pres or 1-2 page info paper)

Graphical user interface (receive/transmit) of Area notice Application-Specific AIS Message on a separate PC screen onboard a ship

 

See: Markus Porthin, Robin Berglund and Lauri Seitsonen: AIS+ - facilitating on board use of AIS Application-Specific Messages. Proceedings of E-Navigation Underway Conference, Copenhagen, Denmark and Olso, Norway, 31 January - 2 February, 2011, pp. 41 - 48. (Included in e-NAV9-INF8.)

 

- Display type ( such as RADAR, ECDIS, ECS or Head up display)

 

2. Functional Capabilities (types of data information content)

 

AIS+ is an application for receiving and sending AIS ASMs using a user-friendly user interface. The software can be run on a normal PC connected to the AIS transmitter through the Pilot plug. AIS+ reads AIS messages from the serial or USB port of the computer, decodes them and visualises the information content. It also codes user inputs into AIS ASM messages and sends them to the AIS transmitter for transmission. The ASMs currently implemented in AIS+ are: Meteorological and hydrological data (FI = 11, FI = 31), Area notice (FI = 22 and 23) (receiving), Number of persons on board (FI = 16), Dangerous cargo indication (FI = 25) and Area notice (sending) [2], [3], all defined under the international designated area code (DAC = 1).

 

The map view shows the vessel’s current own position with a black circle. The location information is retrieved from the vessels own position report AIS messages and the map by default follows the vessel. The map also shows major place-names and lighthouses depending on the zoom level of the map.

 

AIS+ can be used to create area notices consisting of a single geography type, i.e. circle, rectangle, sector, polyline or polygon. The area notice specification in the IMO circular SN.1/Circ.289 allows a combination of these in a single message but that is not currently implemented. The area notice creation dialog in the figure below shows the fields that can be filled for the area notice, depending on the selected area type. The area can be drawn on the map with a few clicks and for circles, rectangles and sectors the location parameters can also be tuned manually in the dialog.

 

The resulting area notice is shown in the figure below with an opened area notice information dialog. Here the map is zoomed to the best coastline resolution (40 meters).

  

Area notice generation dialog

 

Area notice that is sent by the current vessel

3. Intended Purpose (including benefits)

Display of Area notice Application-Specific AIS Message and user interface for creating/transmitting the messages

 

4. Portrayal examples (means or methods of portrayal)

a) good examples

  • Graphic display in a chart indicates the area or position concerned by the Area notice message

  • Additional information is received by clicking the symbol.

  • Ship position displayed

b) lessons-learned

  • Would benefit from integrating in ECDIS

  • Integrating with existing ENC symbology is desired.

c) some concerns

  • Risk for cluttering if displayed on ECDIS


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