or other passive reflector. That doesn't guarantee you are going to be seen, for sure. But it does increase your chances. AIS class B doesn't guarantee you will be seen either. But it increases your chances. Your AIS received doesn't guarantee that you will see other ships. But it increases your chances.

This isn't about certainty, its about probability.

I don't think 3 figure devices are too much to spend when added to a 7 figure boat as a safety precaution. But my mother always told me I was different....