Based on boiling 14.75 gallonsliters at 1.047 for 75 minutes, this will decrease your wort by 1.25 gallonsliters, bringing your after boil OG to 1.051. You wanted an OG of 1.056. It looks like it will be under.
Bottled the other half of the batch. Added 4oz. of Galaxy hops to carboy on 11/12.
Clean IPA with nice aromatics but bitter aftertaste. Foam is velvety and thick. Going to let sit for another week or so and see if the bitterness diminishes.