A port is an area or platform entered into from the sea, by vessels, boats, and ships. It also allows for protected staging, anchoring or docking for ships to load and unload consignments and continue towards their destinations.
A deep water port is constructed in deeper waters, normally 30 feet or more, while a regular port goes up to only 20 feet deep or a little more. In simple terms, deep water ports accommodate the largest ships with the deepest draughts.
Difference between...https://www.marineinsight.com/ports/what-are-deep-water-ports/