raspberry pi zero KIP external display

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Hi everyone, I'm using a raspberry pi 3 for opencpn, and I recently discovered the KIP functionality in signalK. I had planned to use a raspberry pi zero W paired with an E-ink screen to display basic (speed and/or depth...) information outside the boat. Unfortunately (but unsurprisingly) the pi zero isn't powerful enough to load the website. 

Is there a way to access the signalK data stream? /  if so how is it organized? (my knowledge in network stuff is pretty limited) 

Thanks !