[houeto]

Intracoastal Waterway at Jacksonville.

Intracoastal or Intercoastal? Huge difference and I do not know the answer sir.

[RegulatorCountry]

Intra. It’s typically between the coastal barrier islands and the mainland but sometimes dredged channels or old canals, sheltered from open seas.

If it were intercoastal it would need to go from coast to coast to make linguistic sense. I suppose it does in a way, since the Gulf has one, too. No idea if the two connect on the southern tip of Florida or not.

Regardless, it’s still intracoastal.

[Brad from Tennessee]

Intracoastal means inside the coast. The Intracoastal Waterway linked up rivers, lagoons and inlets on the landward side of barrier islands running up the east coast. This provided waterway for ships and barges that was relatively safe from enemy submarines patrolling the east coast shipping lanes.