I owe you an update. I went onsite last weekend and investigated Cabling and have concluded it is very possible! There are Power Panels (15-20 Meters on a Board) on Land at the top of each Ramp. From there conduit takes the power lines to each Boat Slip (we do not need to run power). In some cases there is a conduit sticking up out of the ground connected to nothing with nothing in it...like a vent, but maybe unused conduit (hoping)? I need to figure out how to trace it, guess we could snake it. I was thinking Smoke (Ruled yodeling). Better ideas?    The conduit runs under the Ramps. It would be easy to attach Cable outside the existing Conduit. Don't want to run it inside with Power. A little harder, I could run another small conduit just for Internet. The Ramps are about 100ft to main walkway, suspended above the water line, so I don't think they submerge and they are anchored on land so they do not move. Product suggestions?    We are checking with the service provider (Comcast) to see if they will drop a circuit at the Power Board (pretty please). If not, we need to run another 100ft to a closet in the building, still not too difficult and only 200 feet total. This would put their Router/Modem indoors, which they would surely prefer.   Getting close, appreciate you all for providing your input. Extra Kudos to CMR for suggesting cabling! ... View more

Maryland, USA ... View more

Great point! I 'think' the main walkway is all connected, I am also thinking most/all of the fingers are connected to the main walkway too. We would keep this system running along the main walkway, I will double check this weekend. But Land to Marina Ramps can definitely 'move' up and down, changing the length somewhat. There is A/C power running from shore so they have dealt with it somehow. More research. I will engage with the longtime electrician as well this weekend.   You all are great, keep the point/counterpoint coming and I will update with my findings. ... View more

Thanks PhilipDAth, will research your suggestion. The Internet is to be added and I assume the Cable provider wants to terminate in a building. Would be great if they accepted my house/business was on the Marina and delivered there! But unlikely. We can easily add Nema boxes to protect the equipment. Love the 'bandwidth per user' solution. ... View more

I am retired and doing this gratis, will just be glad it is keeping the mind working 🤣 ... View more

Agree, which is why I posted here. Not a DIY and not by me. ... View more

I agree cabling would be best, just like a wireline circuit is better than Cellular. The marina submerses during exceptional high tides, about 5 times a year so any cabling would have to be elevated. I would think cabling would require conduit for protection as well, right? Getting all this done would not be inexpensive. But we still need to get from the building, where the wireline would terminate, to the Marina. Running cabling there would not only be even more complicated and expensive, it might require permitting, and it would stress the distance limits of Ethernet perhaps leading to future issues. The leg from land would be the most important in determining circuit quality. ... View more