Gulf access, sailboat access and freshwater are not the same thing.
Those few MLS words can describe completely different boating possibilities. Here is the short version before you start comparing homes.

Connected to navigable saltwater.
The property has a navigable water route toward the river and Gulf. That route may still include fixed bridges, locks, distance and speed zones, so “Gulf access” alone does not tell you whether it works for your boat.
No fixed-bridge restriction on the route.
This generally means the route to open water does not require passing under a fixed bridge. It does not automatically mean every boat fits every dock, lift, canal or water depth. Verify the specific property and route.
Waterfront, but not Gulf access.
Freshwater canals and lakes are inland systems. They can provide water views, fishing and small-boat recreation, but they do not provide a navigable route to the Gulf.
Ask what is between you and open water.
Rather than relying only on labels, look at the actual route: bridges, locks, distance, canal turns and speed restrictions.
“Gulf access” is the beginning of the question.
If you already own a boat, the useful question is whether that boat can comfortably use the property and route. If you do not own one yet, understanding the restrictions now can prevent the property from limiting the boat you want later.
Know the access before you fall in love with the kitchen.
