Raymarine's electronics are not very secure. This is no secret, but there really isn't a drive to reverse engineer or hack them. But the way they're selling their high end solutions for a large amount of money is ridiculous. What even is "SeaTalk"? It's a serial connection. They could have done the same thing with ethernet or just a few wires. It's all a market cornering money grab. So I decided to try and imitate what (I think) is one of their more expensive features: viewing the MFD on a TV screen.