That cellular connection to each boat is pretty spotty! I have zero affiliation with these guys, but check out their WiFi broadcast solution: www.newtek.com/blog/2015/08/06/transmitting-remote-video-camera-signals-from-the-boondocks/ They're only running 3 remote cameras in the example. WiFi systems can handle much, much more. As large as your switch can handle! The remote cameras can have a dedicated stream that isn't reliant on cell towers.
