Originally Posted by
Pedaleur
It's the functional equivalent of the luff tackle arrangement (without the last loop of the free end over the fixed pulley).
So, 3:1.
Gun tackle not luff - sketch it out to prove it to yourself. It's that last line over pulley that makes a luff 3:1. Without it, it's a gun tackle and 2:1.
I guess this is not as simple for people as I thought.