If it is that,
DCL has now changed it on their site and only goes over to the French side. Kinda a let down.
Here's the description on DCL's site:
Golden Eagle Catamaran
Sail the ocean blue aboard an exciting catamaran and soak up the sun-kissed sights as you make your way to the scenic splendor of the French side of St. Maarten. Upon anchoring approximately 50 feet offshore, dive in for a swim and snorkeling adventure or retreat to the beach for a relaxing hour and a half of sun and sand.
Port of Call: St. Maarten Activity Type: Water Sports Activity Level: Moderate Duration: 4 hours Price: Adult: $82 (ages 10 and up)
Child: $46 (ages 5-9) Ages: 5 And Up Additional Information Please be aware that St. Maarten's beaches are similar to those found in European countries, where swimwear and other attire are optional. Nudity or topless bathing may be observed.
Snorkeling equipment and instruction are provided.
Snorkeling is from the catamaran.
Guests can swim to the beach which is located approximately 50 feet away.
On their site, they show a hotel right next to the beach. I don't remember any hotels in your pics.