Category Archives: How to

Silent mode for AIS transponder

Is it possible to turn off an AIS transponder emission and use it just as a receiver?

Yes, it is possible, our new AIS class A and AIS class B transponders incorporate this feature. Just get in touch with us and we will advice you on the best model, or check out our on-line store:

Buy AIS receiver and AIS transponder

Buy your marine electronics equipment in aisnautica.com the on-line shop selling AIS receivers and AIS transponders

Change MMSI and yacht name in AIS transponder

<h3>If you change the name or MMSI of your boat, or you acquire an AIS transponder from someone else, you will have to reprogram the transponder with the new data</h3>

The AIS system is based on confidence and accuracy. Data provided by the vessels using this system has to be accurate. Therefore, it is not possible to carry an AIS transponder with the wrong information. You may put at risk your safety and other ships’ safety as well, disregarding that you may be breaching the law.

We can reprogram your TrueHeading transponder, just get in touch with us and send us the new data that you need to be put in the AIS equipment:

- Name
- Type of vessel (pleasure craft or sailing vessel)
- Call sign
- Dimensions of ship – to nearest meter
- Location of positioning system’s (e.g., GPS) antenna on board the vessel – in meters aft of bow and meters port or starboard

(this is the standard static data for AIS class B transmission)

We hope this information was useful. Please get in touch with us if you have a further interest on this matter.

iPhone, iPad and Android apps to receive AIS info via WIFI

If you are looking for applications that you can use in your mobile or tablet in order to see AIS data coming from your installed transponder,

With the Vesper XB-8000 AIS transponder here is the official Vesper list of compatible applications: http://www.vespermarine.com/xb/apps

Vesper_AIS_XB_8000_m

There is also this good article explaining how it works http://i-marineapps.blogspot.com.es/2012/11/vesper-marine-ais-watchmate-app.html

Lastly, if you want to see how simple it is to configure the iNavX app with this transponder, nothing better than watching this short video:

Share maritime traffic data with your AIS base station

AIS information is shared among many users that have built a pretty good global coverage of the coastal maritime traffic in real-time

In order to share, normally you just need to have your own base station:

In order to have your base station, we recommend using a simple but powerful AIS receiver with USB port, that will allow you to simply plug it to your computer using the USB port, and plot the AIS messages in any of these free AIS decoder programs.

As additional software, you would need a basic VHF antenna that you will have to secure in a place with good visibility towards the coastline that you would like to cover.

These are some of such networks that will accept your feed:

Good luck! and enjoy sharing your AIS data!

How to decode AIS sentences !AVDM !AVDO

So you would like to decode NMEA AIS sentences of the type !AVDM and !AVDO

!AIVDO,1,1,,,B3ErsM03wk?8mP=18D3Q3wv5sP06,0*08
!AIVDM,1,1,,A,14RNTp001OOn5B8HmbB48kI600Rw,0*33
!AIVDM,1,1,,B,D02;bAAFhLfq6DM6Erlu6D3,2*2B
!AIVDM,1,1,,B,13E`Tn8P00Oo<rbHjWstI?w20D0B,0*1B

The best thing is to use one of the free available programs to decode AIS messages we listed here.

But if you want to do this on-line, you have some on-line tools where you can paste the messages that you would like to decode. These are NMEA 0183 messages:

And if you would like to dig in further and build your own decoder, there is available information here:

AIS receiver (AIS decoder hardware) Simple to install and connect with a USB cable

AIS decoder hardware. Simple to install and connect with a USB cable

How to connect AIS receiver or transponder to OpenCPN software

As you probably know the AIS receivers generate NMEA sentences.

In other posts we have presented the excellent software for navigation OpenCPN that more and more sailors are using as their main chartplotting solution on board. This open source software is available for Windows, Linux and Mac OSX.

In the latest version 3.2 there are significant improvements for AIS data processing.

Today we will focus on the installation and configuration procedure.

1. Connecting the AIS receiver to the chart plotting software OpenCPN

If the AIS receiver has USB connection, like for example the True Heading AIS RX Carbon, then it is very straight-forward.

If it has a serial connector (DB9 RS232), then you will normally have to use an adapter, because modern computers do not feature serial ports anymore. These have been replaced by USB ports.

We can recommend any Prolific chipset based converter, there are a lot of generic brands. Or if you want to search for a specific model, Belkin offers a few.

2. Configuring OpenCPN

You should follow the same guide used to configure a GPS, because basically as the GPS uses NMEA sentences, it works similarly to an AIS receiver. You can find them here http://opencpn.org/ocpn/setting_up_gps. This example is based on Windows. Basically you have to identify what is the COM port being used by the USB serial converter.

There is additional info in this page http://opencpn.org/ocpn/data_connections. You will see that the example is based on Linux.

3. Plotting AIS targets

The result of decoding the AIS data can be shown in the charts, as seen in the below image:

OpenCPN navigation software AIS decoding example view

OpenCPN navigation software AIS decoding example view

And a lot of configuration options are available, as described in the manual here: http://opencpn.org/ocpn/ais

How to connect a Northstar Explorer, Standard Horizon, Hummingbird plotters to an AIS transponder

Thanks to the NMEA-2000 and NMEA-0183 standards, it is easy to plug a class B True Heading AIS Transponder with a Northstar Explorer, Standard Horizon or Hummingbird plotter.

In this pdf you will find the diagram explaining how to connect the AIS transceiver to a Northstar Explorer, Standard Horizon or Hummingbird series plotter.

Please let us know any feedback or comments you may have. This guide is specific for the True Heading class B AIS transponder CTRX Graphene.

How to connect a Lowrance plotter to an AIS transponder

Thanks to the NMEA-2000 and NMEA-0183 standards, it is easy to plug a class B True Heading AIS Transponder with a Lowrance HDS 5X,7,8 and 10 series plotter.

In this pdf you will find the diagram explaining how to connect the AIS transceiver to a Lowrance HDS 5X,7,8 and 10 series plotter.

Please let us know any feedback or comments you may have. This guide is specific for the True Heading class B AIS transponder CTRX Graphene.