Private Fast Power Catamaran. Full or Half Day for Beach Hopping, Snorkel & Swim

The best island days happen offshore. This private charter gives you a fast, stable ride aboard the 36-foot MV Poseidon, with room for up to 12 people and a captain who shapes the day around your group. I especially like the private setting and the freedom to choose between snorkeling, beaches, swimming, and waterfront drinks instead of following a fixed schedule.

The second big plus is the boat itself. The TwinVee Ocean Cat is built for speed but has a steady, comfortable ride, and its low draft lets the captain get close to beaches. The main drawback is cost: the $895.50 boat price can be excellent for a larger group, but the fuel charge and tip add to the final bill.

Key Points Before You Book

• Private boat for up to 12: You pay for the whole MV Poseidon, not per seat.
• Flexible four to seven hours: Your captain helps shape the route around swimming, snorkeling, beaches, or lunch and drinks.
• Strong snorkeling setup: New equipment is provided, and the route can include turtles, fish, coral, stingrays, starfish, and other sea life.
• Fuel is extra: Plan on $8 per gallon, with about 15 to 25 gallons for a half-day and 30 to 45 gallons for a full day.
• Captains make the difference: Amanda, Holly, Glen, Wallens, Aaron, Mike, Bryan, Kyle, and others are praised for safety, local knowledge, and a friendly manner.
• The eight-stop list is only a menu of possibilities: You will not see every named beach in one day.

What You Are Really Booking

This is not a standard sightseeing cruise with a set group and a fixed route. It is a private powerboat charter from American Yacht Harbor in Red Hook, St. Thomas. You and your group have the boat to yourselves, then work with the captain to decide how to use your time.

That distinction matters. A half-day can focus on two or three snorkeling areas, perhaps with one beach stop. A full day gives you more room for swimming, beach time, lunch, and a longer run toward St. John. The boat can move quickly between areas, but the Caribbean rewards unhurried stops. If you try to collect every beach name on the map, you will spend too much of your day riding.

The MV Poseidon is a 36-foot, twin-hull power catamaran. Its size gives a group of 12 space to spread out, while its twin-hull design is intended to provide a stable ride and keep spray down. You also get a transom ladder, low draft, Fusion stereo, water, ice, soda, beer, and snorkeling equipment.

The captain is included, but gratuity is not. A tip of 15 to 20 percent is recommended, so remember to allow for that when comparing the price with smaller shared boats.

Why the Private Format Works So Well

I like private charters most when a group has mixed interests. One person wants turtles, another wants a quiet beach, someone else wants a cold beer near a restaurant, and the children may be ready to climb out of the water after 20 minutes. A private boat lets the captain adjust the rhythm instead of asking everyone to accept the same plan.

The captains also appear to be a major part of the appeal. Captain Holly is praised for her island knowledge, friendly energy, and attention to safety. Captain Glen is described as both informative and flexible, especially with families. Captain Amanda receives especially strong praise for her understanding of island history, geography, and sea life.

Captain Wallens is repeatedly singled out for finding good snorkeling areas and making families feel safe. Captain Bryan is praised for tailoring a half-day around children as young as five and helping a hesitant older family member feel comfortable in the water. Those details matter more than a polished boat description. A good captain reads the group, explains what you are seeing, and knows when to move on.

You should still arrive early. A half-day charter is only four hours, and arriving late cuts into the time you paid for. The recommended arrival is 15 minutes before departure so you can handle the paperwork without rushing.

Water Island and Little Buck Island

Water Island is a sensible first area if your group wants a gentle start. The short stop can give you time to get comfortable with the boat, ladder, mask, and fins before spending longer in the water.

Little Buck Island offers another chance to snorkel and swim. Park fees and mooring permits are included, which helps keep the day simple when the boat stops in protected areas. The exact conditions will shape what you see. On a calm day, you might find turtles, tropical fish, coral, or other sea life. On a rougher day, the captain may choose a more sheltered location.

Do not expect these stops to be long beach visits by default. The listed times are about 30 minutes each, and the captain may shorten, extend, or replace a stop based on weather, sea conditions, and your group’s wishes.

Secret Harbour and Honeymoon Beach

Secret Harbour is useful for groups that want a mix of water time and an easy beach setting. You can swim or snorkel, then climb back aboard without committing the whole afternoon to one place.

Honeymoon Beach is especially practical for families. The boat’s low draft and rear ladder allow it to approach close to shore, and one family was able to get near the beach so a toddler could play. That is a small but important advantage over boats that require a long swim or a tender ride to land.

You might choose Honeymoon Beach when not everyone wants to snorkel. Strong swimmers can head into the water, while a child or less confident swimmer can enjoy the beach. The boat remains the comfortable base between activities.

Trunk Bay, Scott Bay, and Maho Bay

Trunk Bay Beach, on St. John, is one of the more ambitious options from St. Thomas. A run toward St. John uses more of your available time, but it can pay off with beautiful water and strong snorkeling. One family described the underwater scene around St. John as being like an aquarium, with fish and healthy coral.

Scott Bay Beach gives the captain another place to adjust the day. It can work as a quieter swim or beach stop, depending on conditions and how busy the more famous areas are. The benefit of a private boat is not simply reaching famous names. It is being able to choose a less crowded or more suitable place when the first choice does not fit your group.

Maho Bay is a favorite for turtle sightings. Several outings produced sea turtles there, and one family saw turtles along with fish, an octopus, and a lemon shark. Wildlife is never guaranteed, but Maho Bay is a strong choice if seeing turtles is high on your list.

Keep your expectations sensible. One outing in rough water managed only three stops during a full day, and the captain had to work with the conditions. Another group saw turtles but fewer colorful fish than hoped for. Sea life moves freely, and water clarity changes with weather, boats, and swimmers.

Magens Bay and the Beach Bar Option

Magens Bay is one of St. Thomas’s best-known beaches, so it can be a good choice if your group wants classic scenery and a swim in a famous setting. It may also be a better fit than a snorkel-only stop for people who prefer floating, sunning, or walking on shore.

The boat can also take you close to places such as Dinghy’s, Margaritaville, Lime Out, or other beach bars. Lovango is another popular stop for lunch and drinks. The ability to step off near a restaurant changes the feel of the day. You are not limited to packed food on the boat, though lunch is not listed as included, so plan to pay separately for it.

This is where communication with the captain helps. Tell the crew if you want a proper lunch stop, a quick drink, a quiet cove, or maximum snorkeling time. You cannot do all of it in a short half-day.

Snorkeling Equipment and Sea Life

Snorkeling equipment is provided, including new gear. That saves you from packing masks and fins, although you may still prefer to bring your own if you need a particular fit.

The most commonly praised sightings are sea turtles, tropical fish, healthy coral beds, stingrays, starfish, and an occasional octopus. A lemon shark was also seen on one outing. These encounters depend on the stop selected and the day’s conditions, not on a promise that a certain animal will appear.

The captain’s local knowledge is valuable here. Captain Wallens is praised for knowing what each area is likely to offer, including a sunken sailboat at one stop. Captain Amanda is praised for explaining aquatic life as well as the islands themselves. That turns snorkeling from a quick swim into a more rewarding part of the day.

If someone in your group is nervous about open water, say so early. Captain Valley was praised for helping one person get past a fear of deep water, and several families appreciated the calm safety briefings. The boat can make the day active, but it does not need to feel rushed or intimidating.

The Ride, Music, and Comfort

A power catamaran is a good choice if you want to cover distance without spending the day on a slow sailboat. The TwinVee is described as fast and stable, and the boat’s size works well for larger families or groups of friends.

The ride can still be rough. One full-day outing had difficult water, and the captain had to adjust the plan. If you are prone to motion sickness, consider bringing whatever remedy you normally use and sit where you feel most comfortable. The boat is designed to keep you dry, but no open-water trip can promise a perfectly smooth ride.

The Fusion stereo lets you play music, which adds to the relaxed, private feel. Several outings are praised for a good balance of music, sightseeing, swimming, and snorkeling. Keep the volume reasonable near beaches and other boats, and remember that the captain’s safety instructions come first.

Water, ice, soda, and beer are included. The beer is a useful touch for a beach-hopping day, but the description does not list wine, spirits, food, or mixed drinks. If you want more than the included beverages, ask the operator what you may bring or purchase during a shore stop.

Is $895.50 Good Value?

The base price is $895.50 for the entire boat, up to 12 people. At the maximum group size, that works out to about $75 per person before fuel and tip. For six people, it is about $149 per person before those extras. For four people, it is about $224 per person before fuel and tip.

Fuel is charged separately at $8 per gallon. A half-day usually uses 15 to 25 gallons, adding roughly $120 to $200. A full day uses about 30 to 45 gallons, adding around $240 to $360.

That puts the estimated base price plus fuel at about $1,015.50 to $1,095.50 for a half-day, or $1,135.50 to $1,255.50 for a full day. A 15 to 20 percent tip adds more, so ask how the final fuel charge is handled before departure.

For a group of 10 to 12, I think the value is strong. You get privacy, a large boat, a captain, drinks, equipment, park fees, and the freedom to avoid a crowded shared excursion. For a couple or small group of four, the cost is much harder to justify unless the private format is central to your holiday.

The full day is the better value if you want St. John, several snorkel areas, and a restaurant stop. The half-day works well for families with young children, people who are unsure about a full day on the water, or anyone fitting the charter around a cruise schedule.

Meeting Point, Weather, and Cancellation

You meet at American Yacht Harbor on Smith Bay Road in Red Hook, St. Thomas, and the boat returns there at the end. The meeting point is near public transportation, and service animals are allowed. Most people can participate, but you should discuss mobility or water concerns with the operator before booking.

Confirmation is sent within 48 hours, subject to availability. The charter requires good weather, and poor conditions can lead to a new date or a full refund.

You can cancel for a full refund up to 24 hours before the start time. Cancellations or changes made less than 24 hours ahead are not refunded or accepted. That policy makes travel insurance or a flexible schedule worth considering if your plans depend on a cruise arrival or uncertain weather.

Visiting the British Virgin Islands is not part of this booking. It can be arranged separately under product code 111649P25, so do not assume the captain can simply add the BVI to your day.

Who Should Book MV Poseidon?

I would book this for a family reunion, a group of friends, or a larger family that wants privacy and control. It is especially well suited to groups with mixed ages, since one person can snorkel while another enjoys a beach, music, or a short restaurant stop.

It is also a strong choice if turtles are high on your list. Maho Bay and other St. John areas can produce excellent sightings, and the boat gives you access to more than one location.

I would hesitate if you are traveling as only two people and mainly want a short snorkel. The price may be easier to accept if you share it with several people. I would also avoid promising children that they will see a specific animal or reach every named beach. The sea and weather make the final plan flexible.

Should You Book This St. Thomas Charter?

Book it if you value privacy, a flexible route, and a skilled captain more than the lowest possible price. The strongest parts are the roomy, stable power catamaran, the ability to shape the day, and the captains’ repeated praise for safety, local knowledge, and family-friendly service.

Choose a half-day for a compact mix of snorkeling and beach time. Choose a full day if you want St. John, lunch, several swim stops, and a slower pace. Just budget for fuel and gratuity, arrive early, and treat the beach list as a set of options rather than a promise.

FAQ

How much does the private catamaran charter cost?

The price is $895.50 for the entire boat, with up to 12 people included. Fuel and gratuity cost extra.

How long does the charter last?

The experience lasts approximately four to seven hours. A half-day is about four hours, while a full-day booking lasts longer.

Where does the charter begin and end?

You meet at American Yacht Harbor, 84GX+24H, Smith Bay Road, Red Hook, St. Thomas. The boat returns to the same meeting point.

Is snorkeling equipment provided?

Yes. Snorkeling equipment is included, along with bottled water, soda, ice, and beer.

Are park fees and mooring permits included?

Yes. U.S. park fees and mooring permits are included in the private charter price.

Is the British Virgin Islands included?

No. Visiting the BVI is not included in this booking. It can be arranged separately under product code 111649P25.

How much fuel should I expect to pay?

Fuel is billed at $8 per gallon. A half-day generally uses 15 to 25 gallons, while a full day generally uses 30 to 45 gallons.

What happens if bad weather cancels the trip?

If poor weather causes a cancellation, you can choose another date or receive a full refund. You may also cancel up to 24 hours before the start time for a full refund.