What is deeded access to common waterfront?

Deeded access means that your deed has, written in it, verbiage giving you the legal right to enter a property and the legal right to exit a property owned by someone else allowing you to cross it to get to the water.  You don't own it, you have access over it and the owner can not restrict your access with a fence or a building etc.  It adds value to your property to have it and it MUST be in the recorded deed to be official.