This is a source of confusion for many here, but there is more than one Marina in Marigot.

There is Marina Royale on the Lagoon side of Marigot (which many people never find) where Cafe de Paris, Tropicana, etc. are located.

Then there is Marina Fort Louis on the Harbor side, where O Plongeoir is across from. Most people have never actually been in what they call the bay side marina, for it is gated, with security.