2 layers100 × 38 mm

Sensor
olliiiver/kicad_nmea2000_sensor
NMEA 2000 KiCAD PCB and sketch for analog inputs (e.g. water level, fuel gauge, switch, etc ...)
38 parts3MIT
KiCad boards from 2 GitHub repositories tagged “seatalk”, the most starred first; open any of them in PCBKit.

olliiiver/kicad_nmea2000_sensor
NMEA 2000 KiCAD PCB and sketch for analog inputs (e.g. water level, fuel gauge, switch, etc ...)

behringer24/boathub
A BoatHub remote sailboat monitor based on ESP32 DevKit microcontroller hardware and KiCad board layout