Another HN liveaboard! But I have a feeling your boat was a larger boat with lots of people living aboard from your wording. What did you end up doing with the homelab/sensor network?
It was a great life. Now we're domesticated bluewater sailors waiting to take off again. It was a 38ft catamaran. So there were boats larger than us and many more smaller than us. For us it was the right size, comfortably took a family of 3 (+2 crew) across the Med and Atlantic.
The network was pretty tightly integrated into the boat, a mix of Seatalkng, RS485 and RS232. All connected to my PC through wifi. Sadly, my homelab suffered from saltwater exposure and high humidity. My Mikrotik router and LR wifi antenna stayed with me. Since coming back stateside I've replaced most of my gear with Azure, IFTTT, and Alexa. 3 things we didn't have access to while sailing.