SHIPPLOTTER AIS SHIP TRACKING POSITION DECODING SOFTWARE PROGRAM

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Read the beginners guide on the previous page first. You can decode AIS in two ways:

1) Buy an AIS receiver with a decoded output. The better ones can process both channels simultaneously but tend to be more expensive than scanners but the price is coming down. This is the better way of doing it. I use a Comar Systems SL200 dual channel receiver which works very well and connects to the serial port of your computer.
2) Use a marine band VHF receiver or scanner with a discriminator output and use your computer to decode the signals. A marine band VHF receiver or scanner can be bought fairly cheaply, but will only be able to process a single channel, although this will probably be adequate for home use.

For either method you will need a program that will accept the receiver output and display the ship positions on a chart. The best value for money program available is ‘ShipPlotter’ at www.shipplotter.com. It will decode and display signals from a discriminator output or already decoded signals. The cost is only 25 euros + VAT! ShipPlotter has a sharing facility so you see what ships other ShipPlotter users are seeing all over the world. To display the ships you will need a chart for your area. There are a selection of charts downloadable from the Internet.