GW 1.0 with mod update 1.1 how far?
 

For GW 1.1 mod. How far can your WO see out in the horizon on a bright clear day?

Also on a dark cloundy night?

I'm using the 16 km (Dark) version, and I've had lookouts call out sightings at what a look through the UZO proved to be 17 km. All I could actually see was the smoke column, which made me quite happy.

At night I once had a lookout call a ship at "Long Range!". Turned out it was just over 4000 meters. I don't remember if it was overcast or not.