AIS

A Class B Automated Identification System (AIS) has been added to Serenity's kit.  We gave it a go over the Forth of July weekend and were thoroughly impressed.  On several occasions it alerted us to large ships before we could get a visual.  On one occasion, I would have taken unnecessary evasive action to avoid a tug pulling a barge, if I had not been able to determine the tug was turning using the AIS information displayed on the chart plotter.  Attached is a picture of what it looks like on the chart plotter.  Serenity is represented by the green icon, the tug is passing on the starboard side.