I used an earlier version of visionmaster, which was fitted on all the NOAA FSVs. They even sent me to the school. We had user manuals on board and even got ECDIS training DVDs for the boat (tailored to the class I took in Virginia). Anyway, maybe you should contact Sperry to get the manuals. The older version I used was not great. Took forever to enter routes cause you couldn’t reverse them. Track info was not always accurate cause you had to drop a go-to point on the route in front of you. Etceteras. Anyway, sorry I couldn’t be more help, but I really don’t see why Sperry didn’t leave user/operator/installation manuals with the boat. I would start with Sperry. You pay 10s of thousands of dollars for this shit and they should throw in a few books to go with it.