Heh. Someone needs to tell them that wired connections will always be faster, more reliable, and less expensive in the long run.

That’s going to be pretty constraining. I don’t think you necessarily need 500 most of the time, but 70 is just to little for 6 people at once.

Most of the time, you’ll probably be fine, but there will definitely be times where your network gets so congested that your video streams and gaming performance will suffer.

This is even worse if you’re moving to something like a wireless connection, where packet loss is going to be worse, or a satellite connection, where latency will be higher.

Don’t mess with mesh gear. Just get a good router and enough access points to cover the area you need. This mesh stuff is annoying to set up and use; I have a TP-Link mesh system just sitting in a box in my room.

As far as getting Ethernet near your boat… a fiber run will do exactly what you need; you can use a fiber converter or small switch with SFP adapter at the end near your boat and either mount an outdoor access point, or put the converter and AP inside a weatherproof ABS electrical box.