Here are more pics
A buddy and I were riding our jet skis to Chesapeake and Delaware canal.
There are a series of these towers in the water. The have lights at the top that made me think the towers are associated with an airport, I don’t know if any airport is near there.
My first thought was, it was just a cell tower, but then the fact there’s like a series of them in the line, maybe go kind-of X-Fileish about them.
They can also be used to guide you in and out of shallow areas to get to land. The general rule is “red right return”, which means to slowly head towards land with the red light staying just to your right. There’s often a paired green light with it to the left.
Those are the navigation beacons or lateral bouys. OPs pictures are specifically range lights.
Ah gotcha, thanks for the clarification.