Hello I have an 80cm long and beam roughly 20cm sailboat that I am making to become an autonomous with rc override capacity. Any pointers on what kit is needed to get started. Does anyone have working code/ sensor / hardware pack for sailing?
you just need a 32bit ardupilot compatible flight controller and its supporting hardware, like a power module and a GPS.
A bit more targeted:
Definitely read the links shared above, there is a lot of configuration and setup to understand and go through.
You will need a wind sensor (direction at least but optionally direction and speed). You might need to upgrade your RC to something with a PPM or SBUS output on the receiver and more switches on the transmitter.
There are many options for flight controller, I have had success with various pixhawks, and I also like the matek wing family since they can supply power for the servos and OSD if you have video.