Lights and Recognition (Software ?)

[wind_magic]

Thank you everyone for the great responses, good resources there! And to think, when I asked the question I really didn't expect much of a response, who knew there was so much out there on such a precise aspect of sailing ?

[jackdale]

Wind

One more I came across recently.

The Frugal Mariner: Advice for the cash-starved boater --Inland Signal Lights

[Yamsailor]

This one is pretty good too:

https://www.netc.navy.mil/sobt/web/index.html