Hello,
Fo my own purpose, I have create a small program that create a virtual CAN device on Venus OS, and connect it to Yacht Device N2k Gateway via TCP.
You can see it here : https://github.com/macjl/yd2vcan
It seems to work, and I now see battery status on N2k network, without a real CAN interface.
Next step : understand why GPS data are not shown on Venus.
Feel free to comment (and improve my bad code !)