[petrofinn]

My active sailing days are over, I regret, but I live near a busy port in the UK and retain a keen interest in anything that moves on the water.
I wish to monitor AIS equipped vessels by means of an AIS receiver. The popular "SailPlotter" is usually used over here with a PC running Windows/Vista. However, I use a Mac so I am looking for suitable s/ware.

Since the USA is the home of the Mac can someone recommend a suitable Mac program for me to use. A search of the Web has proved rather confusing.
Surely many people in the States must have the same "hobby"?

Please help!
Petrofinn (a former sailor)