Up Side Down Compass In Nav Map

[DCOg]

I saw an earlier post about this upside down compass in the Nav Station.
The reply was that it was used for bearing.

Can someone explain this to me. I always thought that a contact bearing was from the bow of the boat. I don't understand how to use this compass.

One thing that makes a game great are forums like this where us newbies can get help.

Thank You
DCOg