Yeah, we use Vga...
It's the speed to fly for a OEI go-around.
There will be different speeds for different weights, flap settings.
For us, look at the speed card for the go-around flap setting (1 stage up); eg. flap 15 approach, look for the flap 10 Vga.
From the fcom; "maintain airspeed not below vga" (OEI G/A)
It's about Vref - 4.
Good idea to brief it in a OEI approach brief (sim!).
