On the SHTP, we used em-trak B924 AIS transponder and Standard Horizon GX2000 for AIS display and alarm. It worked as expected, and I “saw” more ships than I would have picked up just looking around. Whenever one was within 10 miles or so, I called, asked if they could see our AIS, our radar return, and lights if dark. They usually could, although I did not ask if they saw us before I asked. One photo shows the display with a ship about 7nm astern, crossing right to left. One photo shows the view, and the other photo has an arrow pointing at the ship.
The Std Horizon as a display/ alarm is limited, because the alarm cannot easily be disabled once it starts alarming. Maybe I could turn the radio off then on, but it did not seem that important since I only saw a ship every 2-3 days.


Todd Olsen
WATERWINGS- Corsair F31RS Trimaran
GWENDOLYN- Olson 29