Hi. I am planning to manage some Opencpn features charging the software on a Raspberry 4B and using Pypilot on my boat. For this purpose I would need to charge Navigation Charts specific for Italy but not available at the moment ( neither a possible availability in the near future is expected) . I am so trying to know if there are any  Navigation Charts compatible with OpenCPN  software to be installed on Raspberry Pi devices in order to be able to use my Pypilot function over Italy ( specifically Mid Tirrein coastal sea) zones. 
Your advices are very appreciated.
Best regards

Francesco