Positioned at latitude 18°03'N, longitude 63°03'W, the island of St Martin—divided between French Saint-Martin in the north and Dutch Sint Maarten in the south—serves as the primary operational hub for luxury yachting in the northern Leeward Islands. Its central location makes it the principal embarkation point for itineraries extending 15 nautical miles southeast to Saint-Barthélemy or 9 nautical miles north-northwest to Anguilla. The island’s unique geography is dominated by Simpson Bay Lagoon, one of the largest protected inland bodies of water in the Caribbean, ringed by deep-water marinas, shipyards, and fuel docks. Managing a successful Yacht Charter St Martin yacht charter requires a comprehensive understanding of the island's dual administrative frameworks, maritime infrastructure, bridge opening schedules, and shore-side logistics.
Dual Sovereignty and Entry Formalities
The 87-square-kilometre island operates under two distinct legal jurisdictions. The northern territory, Saint-Martin, is an Overseas Collectivity of France and part of the European Union. The southern territory, Sint Maarten, is a constituent country within the Kingdom of the Netherlands and maintains an independent customs and border control regime outside the Schengen Zone. While there are no physical border controls between the two sides on land, maritime entry procedures are strictly managed by their respective port authorities.
Vessels arriving from international waters must clear customs and immigration with the appropriate authority based on where they drop anchor or secure a berth. Cruising on a Yacht Charter St Martin yacht charter means navigating these administrative nuances seamlessly:
* **Dutch Sint Maarten:** Clearance is administered by the Sint Maarten Port Authority and Immigration at Simpson Bay or Pointe Blanche (Port St Maarten). Yachts entering Simpson Bay Lagoon via the Dutch bridge must clear in immediately at the Simpson Bay Lagoon Authority Corporation (SLAC) dock adjacent to the bridge control tower. * **French Saint-Martin:** Formalities are completed through the Port Authority offices located in Marigot at the Gare Maritime, Marina Fort Louis, or the commercial port of Galisbay. The French side utilizes an electronic clearance station system, simplifying processing for EU and non-EU flagged vessels alike.
When embarking guests, it is critical to align flight arrivals with the vessel’s berth location. Passengers arriving at Princess Juliana International Airport (SXM) on the Dutch side can board directly in Simpson Bay without crossing a international maritime border. However, if the yacht is berthed at Marina Fort Louis in French Marigot, shore transfers cross the land border freely, but the vessel must ensure its administrative paperwork reflects its berth position. Cruising permits are mandatory for both territories. The Réserve Naturelle Nationale de Saint-Martin enforces strict environmental rules and mooring permit fees in protected marine areas including Île Tintamarre, Îlot Pinel, Rocher Créole, and Baie de l'Embouchure.
Simpson Bay Lagoon and Bridge Operations
Simpson Bay Lagoon provides complete protection from ocean swell, making it the preferred haven for superyachts during the Caribbean charter season. Access into the lagoon is governed by two lift bridges: the Simpson Bay Bridge on the Dutch side and the Sandy Ground Bridge on the French side. Understanding the dimensions and operational constraints of these entry points is paramount for passage planning.
The Simpson Bay Bridge is the primary gateway for large vessels entering the lagoon from Simpson Bay Roadstead. The channel width is strictly limited to 55 feet (16.75 metres), which accommodates large single-hull motor yachts and sailing yachts, as well as wide-beam catamarans, though catamarans with beams exceeding 50 feet require precise helm control during peak tidal flows. The controlling depth through the bridge channel is maintained at approximately 3.8 metres (12.5 feet) at mean low water, although heavy surge or localized siltation can alter depths; local pilotage advice should be taken by deep-draught vessels.
The Dutch bridge operates on a fixed daily timetable, lifting several times per day for inbound and outbound traffic. A typical operating schedule features dedicated openings at 08:30, 10:30, 11:30, 15:00, and 17:00 for outbound vessels, followed immediately by inbound traffic. Schedules are adjusted seasonally and subject to change based on commercial traffic or extreme weather. Vessels must contact "Simpson Bay Bridge" on VHF Channel 12 prior to approach and wait in the marked roadstead until clearance is granted by the bridge master.
Inside the lagoon, the Simpson Bay Causeway Bridge—a swing bridge completed in 2013—spans the water between Cole Bay and the airport perimeter. It offers a clearance beam of 23 metres (75 feet) and opens on demand or in conjunction with the primary sea bridge to allow movement into the northern and eastern basins of the lagoon.
The Sandy Ground Bridge on the French side connects Marigot Bay to the lagoon. It is significantly smaller, with a maximum beam limit of 10 metres (32 feet) and a controlling draught of just 2.0 metres (6.5 feet). It is primarily utilized by smaller sailing catamarans, tender craft, and feeder vessels. Openings are restricted to twice daily—typically 09:00 and 17:00—and operations can be suspended due to technical maintenance or high winds. Large yachts rarely use the French bridge and instead enter via the Dutch side before cruising across the invisible lagoon border to French facilities.
Principal Marinas and Berthing Facilities
St Martin offers one of the highest concentrations of superyacht berths in the West Indies, split across private resort marinas inside the lagoon and open-water facilities facing the Caribbean Sea.
#### Dutch Sint Maarten Marinas
IGY Yacht Club at Isle de Sol is the premier superyacht facility in the region. Located in the southern sector of Simpson Bay Lagoon, it features 40 deep-water megayacht berths capable of accommodating vessels up to 320 feet (97 metres) in length with draughts up to 5.5 metres (18 feet) once inside the basin. The facility provides high-capacity three-phase electrical power (up to 400 amps at 480V), in-berth high-volume fuel bunkering, potable water connections, and high-speed data infrastructure. The facility is fully gated with 24-hour security, a private captain's lounge, swimming pool, and fitness centre.
IGY Simpson Bay Marina is located immediately inside the Simpson Bay Bridge. It offers 122 slips for yachts up to 190 feet (58 metres) LOA with draughts up to 3.2 metres (10.5 feet). Its position near the bridge mouth makes it an advantageous berth for yachts requiring swift access to the sea without navigating deep into the lagoon. It features full utility hook-ups, a swimming pool, and multiple restaurants on site.
Port de Plaisance Resort & Marina sits in the quieter northern quadrant of the lagoon on the Dutch side. It offers 90 slips designed for superyachts up to 250 feet (76 metres) LOA with a maximum draught of 4.8 metres (16 feet). Port de Plaisance is known for handling heavy displacement motor yachts and offers extensive power capabilities, secure dockage, a full-service country club, tennis courts, and direct access to on-site marine engineers and contractors.
Palapa Marina, situated on the eastern shore of Simpson Bay Lagoon, accommodates motor and sailing yachts up to 200 feet (61 metres) with draughts up to 3.5 metres. It offers a low-key, private environment with high-grade power, water, and direct access to Cole Bay’s commercial supply houses.
#### French Saint-Martin Marinas
Marina Fort Louis is the flagship marina on the French side, situated directly in Marigot Bay. Crucially, it sits outside the lagoon, meaning yachts berthing here avoid all bridge schedule constraints and beam restrictions. The outer breakwater quay can accommodate superyachts up to 260 feet (80 metres) LOA with draughts up to 3.8 metres (12.5 feet). Inside the basin, 150 berths accommodate smaller vessels and catamarans. Marina Fort Louis provides European standard power (220V/380V, 50Hz), high-flow water lines, 24-hour security, and direct walking access to the cultural heart of Marigot.
Anse Marcel Marina is located in a protected, horseshoe-shaped cove on the northern tip of Saint-Martin, opposite Anguilla. The marina is completely sheltered from all directions by surrounding hills. However, access is constrained by a narrow entrance channel with a shallow controlling depth of approximately 2.2 to 2.5 metres at low tide. It features 150 slips tailored primarily to luxury catamarans and motor yachts up to 60 feet. It is an ideal port for charters focusing on the secluded beaches of the northern coast and Tintamarre.
Marina Port La Royale is located in the centre of Marigot, accessible only via the Sandy Ground Bridge and a shallow inner channel. Due to depth constraints of under 2.0 metres, it caters to small motor cruisers, local charter catamarans, and tenders.
Key Anchorage Options and Open Roadsteads
When marina berths are unavailable or an open-water stay is preferred, several stable anchorages surround the island.
Simpson Bay Roadstead offers extensive anchorage grounds south of the bridge fairway. The seabed consists of fine sand with good holding power in depths ranging from 6 to 12 metres. While open to southerly swells, it provides quick access to the Simpson Bay dinghy docks and airport. It serves as the primary holding area for yachts awaiting bridge openings.
Marigot Bay provides a broad, sheltered anchorage protected from the prevailing easterly trade winds. The bottom is mixed sand and mud, offering reliable holding in 4 to 9 metres of water. Anchoring off Marina Fort Louis allows easy tender transfers to the marina's dedicated tender dock, providing straightforward access to French bakeries, markets, and customs offices.
Grand Case Bay, located on the northwest coast, is an exceptional overnight anchorage during settled weather. The bay offers clear blue water over a sandy bottom with depths between 4 and 8 metres. It allows charter guests to go ashore directly via tender to Grand Case's famous beachside restaurants. Care must be taken to avoid the reef system extending off Pointe Arago to the south.
Anse Marcel and Baie Friar offer smaller day-anchorages with good holding in sand, though space is limited by swimming zones and local boat moorings. Île Tintamarre, situated 3 nautical miles off the northeast coast, offers a wild day-use anchorage off its western beach. Vessels must anchor in sand patches clear of sea-grass beds and coral formations, keeping outside the marked marine park boundaries. Mooring buoys installed by the Reserve Naturelle are strictly restricted to vessels under a specified tonnage (typically under 15–20 metres); larger charter yachts must maintain a drift watch or anchor well offshore in depths exceeding 15 metres.
Fuel, Bunkering, Power, and Technical Infrastructure
St Martin’s status as a duty-free port makes Sint Maarten one of the most cost-effective locations for fuel bunkering in the Caribbean.
Ultra-low sulphur diesel (ULSD) is available directly at the fuel docks of IGY Isle de Sol and IGY Simpson Bay Marina. For superyachts taking large volumes (exceeding 20,000 litres) or vessels whose draught prevents lagoon entry, commercial fuel bunkering is arranged via road tankers or specialized bunker barges at Port St Maarten in Pointe Blanche, near Philipsburg. Prior booking of at least 48 hours is required for commercial bunkering, along with formal fuel declarations for duty-free status.
Water infrastructure varies across the island. Shore water supplied at Dutch marinas is sourced from municipal desalination plants and is safe for tank replenishment, though many superyachts prefer running their own reverse-osmosis watermakers while anchored off shore to guarantee water purity.
Electrical power configurations reflect the island’s dual European and American heritage: * **Dutch Sint Maarten:** Marina power operates primarily on 60Hz frequency. Standard shore power connections range from 30A and 50A single-phase 110V/220V to 100A three-phase 208V/480V. High-capacity power up to 400A at 480V (60Hz) is standard at Isle de Sol. * **French Saint-Martin:** Marina power operates on the European standard of 50Hz, 220V single-phase and 380V three-phase. Yachts operating on 60Hz systems must utilize on-board converters or run generators when berthed at French docks.
The technical support infrastructure in St Martin is unmatched in the Leeward Islands. The Cole Bay sector on the Dutch side houses major marine supply houses, including Budget Marine and Island Water World, stocking comprehensive marine hardware, engine components, electrical systems, and safety equipment. Specialized technical services—ranging from marine electronics repair, hydraulics, and refrigeration to sailmaking and certified liferaft servicing—are available locally through long-established marine contractors operating across both sides of the island.
Provisioning, Aviation, and Shore Support
Provisioning a Yacht Charter St Martin yacht charter is straightforward due to direct supply chains from Europe and North America.
The French side excels in fine culinary imports. Suppliers such as Jeulin and specialty shops like Le Goût du Vin in Marigot import fresh cheeses, charcuterie, live seafood, air-freighted French produce, and fine wines directly from Paris and Bordeaux. Super U in Hope Estate provides extensive premium retail food items. On the Dutch side, large-scale commercial provisioning is conducted at Carrefour Market and Cost U Less, supplemented by dedicated superyacht provisioning agencies capable of sourcing specialized international ingredients, high-grade meats, and boutique wines delivered directly to the yacht's passelle.
Aviation logistics are centred around Princess Juliana International Airport (SXM) on the Dutch side. The airport features a 2,300-metre runway capable of receiving long-haul commercial aircraft from Europe and the Americas, as well as heavy private jets. Fixed Base Operators (FBOs), including Signature Flight Support and SXM Airways, provide dedicated private aviation terminals, private customs clearance lounges, helicopter transfers, and direct tarmac transfers for VIP charter guests.
Grand Case-Espérance Airport (SFG) on the French side handles regional turboprop aircraft and private charter flights, offering rapid connections to Saint-Barthélemy (a 10-minute flight), Guadeloupe, and Martinique.
Transfer times from airport terminals to primary berth locations are notably brief:
* **SXM to Simpson Bay Marinas (Isle de Sol / Simpson Bay Marina):** 10 to 15 minutes by road. * **SXM to Marina Fort Louis (Marigot):** 20 to 25 minutes by road. * **SXM to Anse Marcel:** 45 minutes by road, or a 15-minute tender transfer from Simpson Bay. * **SFG to Anse Marcel:** 15 minutes by road.
Seasonal Berthing Strategy and Booking Lead Times
The primary charter season in St Martin runs from December through April, driven by predictable easterly trade winds ("Christmas Winds") averaging 15 to 22 knots and warm, dry conditions.
The peak period spans from mid-December to mid-January, encompassing Christmas and New Year. During this fortnight, demand for superyacht berths at Isle de Sol, Port de Plaisance, and Marina Fort Louis reaches maximum capacity. Berth reservations for the peak festive period should be secured 9 to 12 months in advance. Many marinas impose minimum stay requirements (often 7 to 10 days) and premium holiday rate structures during this window.
The mid-season period, from January through April, coincides with major Caribbean regattas, including the Caribbean Multihull Challenge in February, the St Maarten Heineken Regatta in early March, and the St Barths Bucket in mid-March. During regatta weeks, marina space within Simpson Bay Lagoon is subject to heavy demand. Reservations for these months should be finalized 3 to 6 months in advance to guarantee prime slips.
The shoulder months of May and June offer calm seas, lighter winds, and significantly reduced traffic. Marina berth availability is high, allowing for flexible short-notice bookings.
The Atlantic hurricane season runs officially from 1 July through 30 November, with peak activity between August and October. During this period, charter activity drops markedly. Many major facilities operate on reduced schedules, and yachts remaining in the region require specific hurricane insurance coverage and pre-approved storm berth arrangements at sheltered haul-out facilities such as Bobby's Marina in Cole Bay or the St Maarten Shipyard.
By selecting the appropriate marina, understanding bridge dynamics, and planning logistics around seasonal patterns, brokers and captains can ensure flawless operational execution for any Yacht Charter St Martin yacht charter.