50′ Luxury Yacht. Private Full or Half Day Catamaran Snorkel, & Beach Experience

The best part of this St Thomas charter is control. You get a 50-foot private catamaran for your own group, then work with the captain to shape the day around swimming, snorkeling, beaches, or simply time on the water. The bow has bean bags and trampolines, while the back deck gives you room to sit, eat, and keep drinks close.

I like the way the crew adapts the route to real conditions. When wind makes one side of an island rough, the captain can seek calmer water elsewhere. I also like the family-friendly service: crew members such as Maddy, Olivia, JW, Alex, and Coleman have helped children with snorkeling gear, watched a child briefly while parents swam, and looked for sea turtles, stingrays, octopus, and reef fish.

The main caution is that the long list of possible beaches can create false expectations. A half-day cannot reasonably cover many stops, and some locations, including Trunk Bay, may be restricted for commercial charters. Confirm the route before departure, especially if one beach is the reason you are booking.

Key points to know before you book

• Private 50-foot catamaran: Your group alone uses SY Sirena, with room for up to 12 people.
• Half-day or full-day choice: The charter lasts about four to seven hours, so your time on the water can match your group’s energy and budget.
• Captain-shaped itinerary: You can request snorkeling, beaches, quiet coves, sightseeing, or a lunch stop, subject to conditions and access rules.
• Strong snorkeling focus: Sea turtles, stingrays, octopus, a sunken ship, and large schools of tropical fish have all been spotted on past outings.
• Drinks and gear included: Snorkels, masks, floats, bottled water, soda, beer, and signature rum punch are provided.
• Red Hook departure: The boat leaves from American Yacht Harbor, with pickup from Cruz Bay possible by advance request after booking.

What a private St Thomas catamaran day really gives you

This is not a boat transfer with a fixed schedule. It is a private day on the water, with the captain helping you decide how to use it. That difference matters most when your group has mixed interests.

One person may want to snorkel with turtles. Another may prefer a quiet beach. Children may need short swims and plenty of time back on deck. A private charter lets you adjust rather than asking everyone to follow the same plan as a large group.

The boat is SY Sirena, a 50-foot luxury catamaran with an indoor salon opening onto a broad back deck. The bow has bean bag chairs and trampolines, which are useful places to stretch out while the boat is moving. They also give your group a social spot away from the main seating area.

Up to 12 people can book the boat together. That makes the price easier to understand. At $1,595 per group, a full group of 12 pays about $133 per person before gratuity. A smaller group of four pays nearly $399 per person, so the value improves sharply when you fill more seats.

The price includes the boat, captain, crew, water toys, drinks, and equipment. It does not include lunch or a 15 to 20 percent tip for the captain and crew. If your group wants a private setting and can share the cost, this is a more convincing buy than it is for only two or three people.

Choosing four hours or seven hours on the water

The half-day option is enough for a focused outing. You might choose one or two snorkeling areas, add a beach stop, and still have time to enjoy the boat itself. This works well for families with young children, people who are new to snorkeling, or anyone who wants a major water activity without giving up the entire day.

A full day gives you more breathing room. You can spend longer in the water, travel toward St John, stop for lunch, and allow for slower sightseeing. Several outings have included lunch at Lovango, while another group arranged pizza from the Pizza Pi boat. Lunch is not included, but food can be purchased at some locations.

The company recommends allowing at least 1.5 hours at each stop. That is sensible. A quick ten-minute swim does not leave much time to get masks adjusted, find fish, help children into the water, and relax afterward.

Do not try to collect every place listed for the charter. The possible stops cover much of St Thomas and St John, and even a full-day trip cannot give every beach proper attention. Pick two or three priorities and let the captain build around them.

Secret Harbour and Brewer’s Bay for easier water time

Secret Harbour is a useful choice when your group wants a comfortable first swim. It can help you get used to the boat, the water, and the snorkeling gear before committing to a longer stop.

Brewer’s Bay offers another possible beach and snorkeling setting. The advantage of choosing a bay is flexibility. Your captain can judge wind and water conditions and decide if it is a better fit than an exposed beach that day.

Neither stop is an admission attraction. You are there for the water, shore views, and time together. If you want a more active schedule, use one bay as a snorkeling stop and save the second for a later swim or beach break.

Magens Bay, Sapphire Beach, and Coki Point

Magens Bay is one of the best-known beach choices on St Thomas. It is a natural pick for a first visit, but its popularity means it may not feel as quiet as a smaller cove. Ask the captain what access and conditions look like on your date.

Sapphire Beach gives you another St Thomas option, with a broad setting suited to swimming and relaxing. Coki Point is often associated with clear water and marine life, making it appealing if snorkeling is high on your list.

The practical point is not to judge a stop only by its name. A captain may steer you toward the place with calmer water and better visibility that day. A less famous cove can produce a better swim than a famous beach when wind or boat traffic changes the conditions.

Lindqvist Beach and the quieter St Thomas choices

Lindqvist Beach offers a different feel from the island’s most recognizable beach stops. It can suit a group that wants scenery and time ashore without packing the day with activities.

The private charter format is useful here because you do not have to stay for a fixed amount of time. If the water is excellent, you can stay longer. If children are tired or the weather changes, you can move on.

This freedom is one of the strongest reasons to choose a private boat rather than a scheduled group cruise. You are paying for the ability to adjust, not only for a seat on a catamaran.

Honeymoon Beach, Francis Bay, and St John

Crossing toward St John gives the day a broader island feel. Honeymoon Beach and Francis Bay are possible stops for swimming, beach time, and a change of scenery from St Thomas.

Francis Bay can be a good choice for a slower stop. Your group can use the floats, swim, snorkel, or stay aboard while others go into the water. That range helps when not everyone in your party has the same comfort level.

The trip can also include St John sightseeing. The crew has shared island facts and local stories during the ride, which adds value during the stretches between stops. You are not simply being carried from one beach to another.

Trunk Bay, Maho Bay, and the access question

Trunk Bay is one of the most famous possible destinations in the advertised route, but you should treat it as a request, not a promise. Commercial charter access may be restricted, and the captain may not be able to stop there.

That limitation is important enough to confirm before you pay. If Trunk Bay is your main goal, ask whether the current rules allow this boat to visit. A private charter gives you flexibility, but it cannot override local restrictions.

Maho Bay is another St John choice. It is especially appealing if your group hopes to see sea turtles. Several outings have included turtle sightings, along with stingrays and reef fish, but wildlife is never guaranteed.

I would plan the day around good water time rather than promise a particular animal. The crew can help you look, and their local experience improves your odds, but sea life moves on its own schedule.

Waterlemon Cay, Scott Bay, and Hansen Bay

Waterlemon Cay can make a strong full-day target for a group that wants snorkeling and a more remote-feeling setting. It takes time to reach and deserves a longer stop, so it is a better fit for a seven-hour charter than a short outing.

Scott Bay and Hansen Bay add more St John options. These places can help the captain build a route away from crowded or rougher areas. The final choice depends on weather, water conditions, time, and any current access rules.

You should also remember that a beach name does not always mean you will step ashore. Some stops may work best as an anchored swim or snorkeling break. Ask how the captain expects to use each location.

Snorkeling, floats, and the boat itself

Snorkeling is the heart of this experience. Equipment is included, and the crew helps fit masks, organize gear, and get people in and out of the water. That hands-on support matters for children and anyone who has not snorkeled recently.

The sightings described from these outings include sea turtles, stingrays, octopus, tropical fish, and even a sunken ship. One family with teenagers made turtles their main goal, while another group combined a reef swim with a shipwreck sighting.

You also get floats for less active water time. That gives non-snorkelers something to do while others explore. A person who does not swim confidently can remain aboard, use a float with help, or simply enjoy the catamaran.

The boat has a restroom, which is a small but valuable feature on a four to seven-hour trip. Bottled water is supplied by Virgin H2O, and the company says it follows eco-friendly practices aboard. Soda, beer, and Seas the Day signature rum punch are also included.

Bring lunch or plan to buy it along the route. The crew can suggest food stops, but you should not assume a meal is part of the package. Also remember that alcohol and swimming do not mix well, so pace drinks around your time in the water.

The crew and family considerations

The crew has received especially strong praise for being attentive, cheerful, and willing to adjust the day. Captains and first mates named in the feedback include Maddy, Olivia, JW, Alex, Coleman, Ro, Dylan, Vic, Celina, Dave, Chase, Glen, Yousif, and Yo.

That list does not mean you can request a particular person, but it does show the range of crew members working these charters. The most useful service detail is practical: helping with masks and floaties, explaining island sights, finding calmer water, and keeping drinks filled.

Families with babies, toddlers, and young children have used the boat successfully. One crew helped parents manage snorkeling while keeping an eye on their son for a short period. You should still supervise your children and tell the crew about swimming ability before leaving the harbor.

One less favorable experience points to an important rule: arrive on time. A late departure can shorten your charter, and the crew is not required to extend the trip. Clear communication at check-in will help prevent a bad start.

Red Hook departure and booking details

The meeting point is American Yacht Harbor on Smith Bay Road in Red Hook, St Thomas. The charter returns there at the end of the outing.

Pickup from Cruz Bay on St John may be possible with advance notice after booking. Ask about it early rather than assuming it is automatic. The BVI is not available on this vessel, so choose a different product if visiting the British Virgin Islands is essential.

Mobile tickets are provided, and confirmation arrives at booking. Service animals are allowed, the marina is near public transportation, and most people can participate.

The stated rating is 4.9 from 606 ratings, with 97 percent recommending the experience. Those numbers suggest a very strong operation, but they do not remove the need to confirm your preferred route, lunch plan, and beach access.

Free cancellation is available up to 24 hours before the start time. Inside that window, changes and refunds are not accepted. Poor weather can lead to a new date or a full refund.

Who should book this private charter

I would choose this boat for a family reunion, birthday, wedding group, or friend group that wants its own space. It is also a good match for people who dislike fixed group schedules and want the captain to respond to weather and swimming ability.

The full-day option makes the most sense for up to 12 people who want St Thomas and St John in one outing. A half-day is better for a smaller plan, such as snorkeling with turtles, visiting one beach, and enjoying the boat without committing all day.

I would hesitate if your party is very small and price matters. The group rate is much easier to justify when shared among eight to 12 people. I would also hesitate if your dream itinerary depends on one restricted beach or on visiting the BVI.

Should you book the SY Sirena charter?

Book it if you want a private, flexible day with room to swim, snorkel, eat, and relax without strangers setting the pace. The catamaran, included gear, drinks, restroom, and helpful crew make the package practical, especially for a full group.

Before booking, confirm the current beach options and tell the company your top two priorities. Arrive on time, budget for lunch and a 15 to 20 percent tip, and treat turtle sightings and specific beaches as possibilities rather than guarantees.

For a group that values privacy and can share the cost, this is one of the more comfortable ways to experience the waters around St Thomas and St John.

FAQ

Where does the catamaran depart from?

The charter departs from American Yacht Harbor at 84GX+24H, Smith Bay Road, Red Hook, St Thomas. The trip ends back at the same meeting point.

How many people can join the private charter?

The price covers one group of up to 12 people. Only your group participates in the activity.

How long does the experience last?

You can choose a half-day or full-day charter. The listed duration is approximately four to seven hours.

Is snorkeling equipment included?

Yes. Snorkeling equipment and floats are included, along with a restroom on board.

What drinks are provided?

Bottled water, soda, beer, and Seas the Day signature rum punch are included.

Is lunch included?

No. Lunch is not included, though food can be purchased at many locations along the route.

Can the boat visit the British Virgin Islands?

No. The BVI is not available on this vessel. A separate product must be booked for a BVI visit.

Can I request pickup from St John?

Pickup from Cruz Bay, St John may be possible with advance notice after booking. You should make the request in advance.

What happens if the weather is poor?

If the experience is canceled because of poor weather, you can receive a different date or a full refund. You can cancel for a full refund up to 24 hours before the start time.