Hey yes, this is the world upside down ! At the beginning of iPad use in a boat, the tablet was used to capture the screen of a PC fixed to a chart table for display applications such as MaxSea in the cockpit. The solution has been - and still is - widely used. But since I've been working with a few accomplices to demonstrate that the iPad is capable of providing a perfectly autonomous navigation solution (¹), These tablets are increasingly installed at a fixed position in the cockpit.
Once attached and connected to a waterproof power supply, on a wheel column or close to the tiller, disassembling the iPad may seem tedious for a few minutes to spend inside the cabin. The solution would it not mirror its screen to display on a single PC screen via WiFi, in order to monitor the progress of the boat on the electronic chart while we are active in the galley ?
[Update September 24/08/2020]
I mentioned in two previous posts, on the one hand 
