Simpson Bay - Facts

Apr 30, 2025

Where is Simpson Bay Lagoon?

Simpson Bay Lagoon is a 12 square mile inland lagoon on Saint Martin which is connected to the Caribbean Sea by two small channels spanned by lift bridges; one is in the north-west and flows into Baie Nettlé in St Martin (Sandy Ground Bridge) and the other is in the south-east and flows into Simpson Bay in Sint Maarten (Simpson Bay Bridge). The French-Dutch border runs across the centre of the lagoon.

There are two small islands in the lagoon: the larger, Grand Ilet is in the French region of Saint Martin and Little Key, is on the Dutch Sint Maarten side. Much of the island’s maritime infrastructure is found in the bay, and Princess Juliana International Airport lies close to the lagoon's southern shore. The bay is serviced by more than half a dozen marinas and also has mooring balls and good places to anchor.

Cruiser Highlights for Simpson Bay Lagoon:

Calm water; large cruising community; yachting infrastructure; provisioning; fuel; water; marinas; access to airport; restaurants and bars.  Helpful local businesses that offer almost any kind of service you might need.  Countless restaurants, cheap beer and good food.

Entrance Notes or Cautions for Simpson Bay Lagoon:

Note bridge times when planning entrance and exit. The narrow channels limit the flow of fresh water into the lagoon and urbanized areas of the lagoon, such as Cole Bay and Marigot, are highly polluted.

The lagoon is clear of hazards but can get strong wind gusts. Bridge fees need to be paid BEFORE entering the lagoon.

There are ongoing security concerns for visiting yachts in this anchorage.

Position:

18° 02"N, 63° 06"W

Last updated:  March 2025

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Related to following destinations: Simpson Bay, Sint Maarten
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