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

The best Caribbean days leave the schedule behind. This private 50-foot catamaran charter gives your group the boat, crew, and route for four to seven hours, with room for up to 12 people. I like the custom itinerary, since you can favor snorkeling, quiet coves, beaches, sightseeing, or a mix of all four. I also like the spacious layout, including the back deck, salon, bow bean bags, and forward trampolines.

The main catch is price: $1,595 per group is a serious spend for a half-day, especially for four people. The other important limit is geography. This vessel visits St. Thomas, St. John, and nearby cays, but the British Virgin Islands are not available on this charter.

Quick facts for planning your day

• 50-foot private catamaran: Your group has exclusive use of SY Sirena, with capacity for up to 12 people.
• Flexible timing: Choose a half-day or full-day outing lasting about four to seven hours.
• Snorkeling gear and floats included: The crew provides equipment, along with bottled water, soda, beer, and rum punch.
• Captain-led route planning: You can shape the day around swimming, snorkeling, beaches, lunch, or sightseeing.
• Departure from Red Hook: The boat leaves from American Yacht Harbor, with pickup from Cruz Bay on St. John possible by advance request.
• Strong track record: The experience holds a 4.9 rating from 606 reviews, with 97 percent recommending it.

What the boat day feels like from Red Hook

You meet at American Yacht Harbor in Red Hook, on the eastern side of St. Thomas. From there, the crew helps your group settle aboard SY Sirena, a 50-foot catamaran designed more for comfort than speed.

The boat has a salon that opens to a broad aft deck with seating and dining space. The bow is the most distinctive area, with bean bag chairs and large trampolines. Those forward nets are useful when you want sun, a breeze, or a clear view of the water. They are also a practical place for a quiet rest while the boat is underway.

A catamaran gives you more room to spread out than a smaller center-console boat. That matters with 10 or 12 people, especially when some want to swim and others would rather sit in the shade. Families can also divide naturally, with children enjoying the water and adults keeping an eye on things from the deck.

The crew setup varies, but the supplied experiences repeatedly praise captains and first mates including Maddy, Olivia, JW, Alex, Coleman, Vic, Celina, Dave, and Ro. Their strongest role is helping your group use the boat well. They fit snorkeling gear, point out sea life, suggest calm anchorages, keep drinks moving, and explain island sights.

Building a route that fits your group

A private charter is valuable because you are not locked into a fixed sequence of stops. Tell the captain what matters before leaving. You might want sea turtles for the children, a calm cove for less confident swimmers, a scenic beach, or a lunch stop.

The crew has helped groups find sea turtles, stingrays, octopuses, tropical fish, and even a sunken ship. Those sightings are never guaranteed, but the captain can adjust the route and snorkeling location to suit the conditions. On windy days, the crew may seek calmer water on another side of an island or inside a protected cove.

Plan on spending at least 90 minutes at a stop if you want time to anchor, gather equipment, swim, snorkel, dry off, and enjoy the beach. A half-day charter usually works best with one or two main stops. A full-day booking gives you more room for St. John, a longer swim, lunch, and a second or third location without making the day feel rushed.

The listed route includes many possible stops, but availability can change. Trunk Bay, for example, was recently restricted for commercial charters according to one guest experience. Ask about current access when you book, and confirm your preferred beaches with the operator before departure.

Secret Harbour and Brewer’s Bay

Secret Harbour is a practical first choice for a relaxed swim or snorkel. Its sheltered feel can be useful if the wind is up, and a 90-minute stop gives you time to get comfortable with the equipment.

Brewer’s Bay offers another possible St. Thomas stop. It suits a group that wants open beach time and water activities without spending the whole day moving between locations. The drawback of trying several St. Thomas beaches is travel time. You will spend part of the charter underway, so do not try to check every location on the list.

Magens Bay, Sapphire Beach, and Coki Point

Magens Bay is one of St. Thomas’s best-known beaches, so it can make sense for first-time visitors who want to see a signature spot from the water. The view into the bay is part of the appeal, but its popularity may make it less peaceful than a smaller anchorage.

Sapphire Beach is another good option for swimming and beach time. Coki Point is associated with clear water and snorkeling, making it a sensible choice when your group cares more about fish than simply sitting on shore.

At all three locations, ask the captain about current conditions and anchoring rules. The itinerary is flexible, but flexibility does not mean every stop is available on every date or for every commercial vessel.

Lindqvist Beach and the St. John choices

Lindqvist Beach offers a quieter St. Thomas option than the island’s best-known beaches. It may suit you if your group wants a scenic stop without building the day around a major beach destination.

On St. John, the choices become especially appealing for a full-day charter. Honeymoon Beach and Francis Bay are useful for groups that want swimming and a laid-back beach stop. Maho Bay is a popular place to watch for sea turtles, though wildlife sightings are never promised.

Trunk Bay is famous for its setting and underwater snorkeling trail, but access is the key issue here. Commercial charter rules can change, and this boat may not be permitted to stop there. Treat it as a possible destination, not a guarantee.

Waterlemon Cay, Scott Bay, and Hansen Bay

Waterlemon Cay gives the day a more adventurous feel. It is a strong choice for a full-day route when your group wants a St. John stop that is more about snorkeling and scenery than a long beach stay.

Scott Bay and Hansen Bay offer additional options on St. John. Their value is the freedom to choose a quieter anchorage or work around wind and sea conditions. A private captain can often make better use of these alternatives than a large scheduled boat with a fixed route.

Keep in mind that each extra stop takes time. If your priority is seeing sea turtles, do not sacrifice your best snorkeling window just to collect more beach names. One excellent swim and one comfortable beach stop usually beat six hurried visits.

Snorkeling, turtles, and the gear on board

The charter includes snorkeling equipment and floats, so you do not need to organize a full kit for everyone. The first mate typically helps fit masks, organize fins, and assist people getting into and out of the water.

The strongest accounts of the trip focus on the sea life. Groups have seen turtles, stingrays, octopuses, colorful fish, and a sunken ship. One family with teenagers specifically wanted turtles, and the captain shaped the day around that goal. Another family appreciated help with a child who was not a confident swimmer while the adults spent time snorkeling.

That does not mean the crew provides childcare. Parents remain responsible for children, and you should say clearly if anyone needs extra help or prefers to stay close to the boat. The boat has life jackets, though one negative account raised a concern about suitability. If your child needs a particular size or style, confirm it before departure.

Food, drinks, and the missing lunch

The price includes ice, bottled Virgin H2O water, soda, beer, and the signature Seas the Day rum punch. The drinks make the charter feel more like a relaxed private outing than a bare-bones boat transfer. Several groups singled out the rum punch, and the crew often handles drinks while also helping with snorkeling.

Lunch is not included. You can purchase food at some stops, and past itineraries have included lunch at Lovango or a pizza boat. You can also bring snacks, which is wise for children and anyone who gets hungry between swims.

Clarify the lunch plan before departure. Stopping for food uses part of your charter time, and the captain and first mate need their own break arrangements. The safest approach is to decide whether you want a proper meal, a quick food stop, or snacks kept aboard.

How much value do you get for $1,595?

The advertised price covers the boat for up to 12 people, not a per-person ticket. At full capacity, the base cost works out to about $133 per person before gratuity. For a group of 10 to 12, that is much easier to justify than for a family of four.

The value comes from privacy and control. You are not sharing the boat with strangers, waiting for a fixed group schedule, or accepting someone else’s choice of snorkeling stop. You also get a large catamaran, crew service, water equipment, and drinks in one package.

For four people, the cost is roughly $399 each before tip, making the charter a luxury splurge. A smaller group should compare the price with a shared sailing or snorkeling trip. The private option becomes most convincing when you have a multigenerational family, a birthday group, or friends who want different activities during the same day.

Plan for a 15 to 20 percent tip for exceptional service. That is a meaningful extra cost on a $1,595 charter, so include it in your budget from the start.

The practical details that matter

The activity ends back at American Yacht Harbor. Pickup from Cruz Bay on St. John may be possible with advance arrangements after booking, but it is not automatic. Ask early if you are staying on St. John.

Most people can participate, and service animals are allowed. The boat has a restroom, which is especially helpful on a full-day trip. The operator says the vessels are cleaned after each trip using CDC and WHO guidelines, and the outdoor setting means masks are optional.

Weather matters. You can cancel for a full refund up to 24 hours before the start time. Cancellations or changes within 24 hours are not refunded, except when the operator cancels because of poor weather. In that case, you can choose a new date or receive a full refund.

The experience is offered as a private activity, so only your own group participates. That privacy is one of the main reasons to choose it, but it also means you should communicate clearly. Tell the captain your preferred pace, swimming ability, food plans, and must-see locations before the boat leaves.

Who will enjoy this catamaran most

I would recommend this charter to:

• Families who want space, a private crew, and the option to limit long swims.
• Groups of eight to 12 people who can share the cost.
• Birthday and anniversary groups looking for a special day on the water.
• Confident snorkelers who want several possible locations.
• People who prefer a flexible day instead of a fixed tour schedule.
• Anyone hoping to combine St. Thomas and St. John in one outing.

I would think twice if you are traveling as only two or three people, dislike spending several hours on a boat, or want a guaranteed stop at Trunk Bay or in the British Virgin Islands. The BVI is specifically unavailable on this vessel, and beach access can change.

Should you book the private Sirena charter?

Book it if you can fill much of the boat and want control over the day. The strongest reasons are the roomy catamaran, helpful crew, excellent snorkeling possibilities, private setting, and freedom to change plans when the wind or your group’s energy shifts.

For the best value, gather eight to 12 people, reserve a full day, and agree on two or three priorities before boarding. Ask about current beach access, lunch options, children’s life-jacket sizes, and your Cruz Bay pickup request. If you do that homework, this can become the centerpiece of a St. Thomas holiday rather than just another boat ride.

FAQ

How many people can join the private catamaran charter?

The price covers up to 12 people in your private group.

How long does the charter last?

You can choose a half-day or full-day outing lasting approximately four to seven hours.

Where does the boat leave from?

The standard departure point is American Yacht Harbor in Red Hook, St. Thomas. Pickup from Cruz Bay on St. John may be arranged in advance after booking.

Are snorkeling equipment and floats included?

Yes. Snorkeling equipment and floats are included, along with bottled water, soda, beer, and rum punch.

Is lunch included?

No. Lunch is not included, but food can be purchased at some locations. You may also plan to bring snacks.

Can the charter visit the British Virgin Islands?

No. The British Virgin Islands are not available on this vessel.