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

The best part of this St. Thomas charter is control. You get the entire 36-foot MV Poseidon for your group, then work with a captain such as Holly, Amanda, Wallens, Bryan, or Aaron to build the day around swimming, snorkeling, beaches, or a cold drink ashore. It feels less like a fixed boat ride and more like having your own floating base.

I like the boat’s stable TwinVee design and the low draft, which lets the crew get close to beaches. I also like the useful inclusions: snorkel gear, water, soda, beer, U.S. park fees, and mooring permits are covered. The main catch is the extra fuel charge, and a full day still cannot realistically cover every beach in the sample route.

Key points

• Private boat for up to 12: The $895.50 price covers the boat, not each person.
• Flexible route: Choose more snorkeling, beach time, turtle sightings, island views, or a beach-bar stop.
• Strong captain reports: Holly, Amanda, Wallens, Bryan, Glen, Aaron, and others are praised for safety, local knowledge, and adapting the day.
• Good water access: The boat’s low draft and transom ladder make swimming and beach landings easier.
• Snorkeling is a major draw: Turtles, tropical fish, coral, stingrays, starfish, an octopus, and even a lemon shark have been spotted.
• Budget for fuel and tip: Fuel runs about $120 to $200 for a half day or $240 to $360 for a full day, plus a suggested 15 to 20 percent gratuity.

Why MV Poseidon works well for a private island day

St. Thomas is made for seeing from the water. Roads can be slow, beaches sit on separate bays, and St. John is close enough to visit by boat. A private charter gives you a way to link those places without joining a large group or following a rigid timetable.

MV Poseidon is a 36-foot TwinVee Ocean Cat with twin engines, a broad deck, and room for as many as 12 people. The catamaran design matters here. It is built for speed and stability, so you can cover more water than on a small open boat while still having a reasonably comfortable ride.

You should not expect a luxury yacht with formal seating and a shaded lounge at every turn. This is a working power catamaran designed for swimming and island hopping. Its strengths are space, speed, easy water access, and the freedom to shape the day.

The boat has a Fusion stereo, so your group can listen to music while running between stops. Water, ice, soda, and beer are provided. You may want to bring any preferred drinks or snacks that are not covered, but the basic refreshments are already handled.

What your captain can do with four to seven hours

The charter lasts about four to seven hours, depending on the option you choose. A half day is enough for a focused outing, such as two or three snorkel stops with a beach break. A full day gives you more room to linger, eat ashore, and explore farther.

Your captain begins with a safety briefing and asks what your group wants from the day. That conversation is important. Families with young children may want a calm beach and a short swim. Strong swimmers may prefer several snorkel sites. A group celebrating a birthday may care more about music, scenery, and a beach bar.

Captains named in the feedback include Holly, Amanda, Wallens, Bryan, Glen, Aaron, Mike, Kyle, Hillary, Valley, and others. The repeated strength is their personal approach. Amanda is praised for explaining island geography, history, and sea life while keeping safety serious. Holly is described as patient and upbeat with children. Wallens is repeatedly singled out for picking snorkel sites suited to what the group wanted to see.

The route is not guaranteed. Weather, sea conditions, timing, and your interests all affect the plan. One full-day group reached only three stops in rough water, which is a useful warning. The eight places listed as possible stops are not a promise that you will visit all eight.

Water Island and Little Buck Island

Water Island is often a good early stop because it is close to St. Thomas and offers a change of pace from the marina. You might use it for a short swim, a look at the shoreline, or a relaxed start while the captain learns what your group enjoys.

Little Buck Island is particularly useful for snorkeling. It is one of the listed stops with an included park fee, and the surrounding water can provide the colorful fish and coral that make this trip worthwhile. Conditions change, though. The captain cannot guarantee a specific animal or a certain number of fish.

The suggested timing shows about 30 minutes at each stop. Treat that as a planning guide, not a fixed schedule. Thirty minutes can be enough for a quick snorkel, but it may feel short if your children need time to get comfortable in the water or your group wants to swim and take photos.

Secret Harbour and Honeymoon Beach

Secret Harbour is a practical choice for a group that wants a sheltered-feeling swim and a manageable snorkeling stop. It can also work well when some people want to stay on the boat while others enter the water.

Honeymoon Beach brings a different appeal. The boat’s low draft and rear ladder allow the crew to approach close to shore, so you can step into shallow water rather than making a long swim from the boat. That detail matters for families, cautious swimmers, and anyone who wants a real beach break instead of nonstop snorkeling.

One family used a Honeymoon Beach stop so a toddler could play on the sand. That is the sort of flexibility you lose on a fixed snorkeling trip. You can spend less time chasing fish and more time letting a young child enjoy the shore.

Beach-bar access is another selling point. Depending on the route, you may be able to stop near places such as Dinghy’s, Margaritaville, Lime Out, or Lovango for drinks or food. The boat can get close to shore, but the actual dining stop depends on your captain, conditions, and the plan you arrange.

Trunk Bay, Scott Bay, Maho Bay, and Magens Bay

Trunk Bay and Scott Bay are included among the possible stops. Their value is the chance to combine classic island scenery with a swim or snorkel. You may spend time in the water, take in the coves from the boat, or use one as a quiet pause between longer runs.

Maho Bay is especially appealing if sea turtles are high on your list. Several outings have included turtle sightings there, and one family’s older parent felt comfortable getting into the water at Maho. You still need to keep expectations sensible. Wildlife is wild, and no captain can order turtles or fish to appear.

Magens Bay is one of St. Thomas’s best-known beaches and gives the route a scenic finish or a strong beach-focused stop. It may be more useful for people who want to see the bay from the water than for those seeking a remote, quiet cove.

These four locations sit across a broad area, so you cannot sensibly visit them all in a single day along with every other listed stop. The sample route is best understood as a menu of possibilities. Ask at the start how much running time the plan requires and which two or three stops matter most to you.

Snorkeling with turtles, fish, and coral

Snorkeling is the heart of this charter. New equipment is supplied, and the captain helps you choose sites based on conditions and your interests. In the best conditions, you might see sea turtles, tropical fish, coral beds, stingrays, starfish, an octopus, or a lemon shark.

The repeated praise for specific captains comes from their ability to match the site to the group. Wallens has been singled out for knowing where to find turtles, fish, a sunken sailboat, stingrays, and other sea life. Captain Hillary guided one family to several areas around St. John where they saw turtles, fish, an octopus, and a lemon shark.

Still, snorkeling is not a guarantee of constant action. One outing produced turtles but few colorful fish. Water clarity, weather, noise, and the number of swimmers in the water all affect what you see. If your group is new to snorkeling, tell the captain. A calm, shallow site may be more useful than a famous location with stronger water movement.

The boat’s ladder is a practical advantage. You can get back aboard without hauling yourself over the side, and the rear access makes repeated swims easier. Bring a towel, sun protection, and a dry change of clothes, since the charter is built around getting wet.

The price, fuel charge, and real value

The base price is $895.50 for the whole boat, with up to 12 people. That works out to about $75 per person with 12 people, about $112 per person with eight, or about $224 per person with four, before fuel and tip.

That pricing makes the charter strongest for larger families, friend groups, and celebrations. A group of four pays a high effective rate, although you also get much more space and control than you would on a crowded shared boat. If your priority is simply reaching one snorkel site for a few hours, a group tour may cost less.

Fuel is extra at $8 per gallon. The stated average is 15 to 25 gallons for a half day and 30 to 45 gallons for a full day. In plain numbers, budget roughly $120 to $200 for half-day fuel or $240 to $360 for a full day.

That puts the likely pre-tip total 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. The actual charge depends on how far you run and how long you stay out. Ask the operator to confirm the expected fuel range when you book.

A 15 to 20 percent tip is recommended for the captain. The captain is doing more than driving. They handle safety, route planning, local information, anchoring, swimming access, and the small decisions that shape your day. Include that tip in your budget from the start.

U.S. park fees and mooring permits are included. Visiting the British Virgin Islands is not part of this booking, though it can be arranged under a separate product. Do not assume a St. John and St. Thomas route includes the BVI.

Meeting at Red Hook and making the day run smoothly

The charter starts and ends at American Yacht Harbor, 84GX+24H, Smith Bay Road, Red Hook, St. Thomas. Red Hook is a sensible departure point for reaching nearby bays and St. John.

Arrive 15 minutes before departure. One half-day group lost some of its limited time by arriving late, so this is not a minor detail. You need time for paperwork, introductions, and the safety briefing before the boat leaves.

The ticket is mobile, which makes check-in simple. Confirmation is sent within 48 hours of booking, subject to availability. Service animals are allowed, public transportation is nearby, and the operator states that most people can participate.

This is a private activity, not a shared boat. Only your group joins the charter, so you can decide how much music, beach time, snorkeling, or quiet cruising suits you. That privacy is one of the main reasons the higher price can make sense.

Weather controls the day. You can cancel for a full refund up to 24 hours before the start time. If poor weather forces the operator to cancel, you are offered another date or a full refund. Changes made inside 24 hours are not accepted, so watch the forecast and make your final plans early.

Who should book MV Poseidon

I would recommend this charter to a group of six to 12 people that wants a private boat, not a scheduled ride with strangers. Families benefit from the ability to shorten a swim, visit a beach, or adjust the pace. Strong swimmers and snorkel fans benefit from reaching several sites in one outing.

It also suits mixed groups. Some people can snorkel while others relax aboard, then everyone can meet at a beach or bar. The music, beer, and roomy catamaran help make the ride itself part of the day.

A half day is a good choice for families with younger children or anyone who wants one main activity without giving up the rest of the afternoon. A full day makes better financial sense for larger groups that want to visit St. John, add a meal ashore, and take their time.

I would think twice if your group is small, highly budget-conscious, or expects a guaranteed list of beaches and animals. The fuel charge can be substantial, and rough water may reduce the number of stops. You are paying for privacy, flexibility, and a capable boat, not a fixed checklist.

Should you book this St. Thomas private charter?

Book it if your group values freedom more than the lowest price. The combination of a stable power catamaran, a private captain, good water access, snorkel gear, and the chance to shape your own route is hard to match with a standard group outing.

For the best value, bring enough people to share the $895.50 boat fee, arrive early, set two or three priorities, and ask about fuel before departure. Tell the captain if turtles, beach time, children’s swimming, or snorkeling matters most.

I would choose a half day for a compact family outing and a full day for a larger group that wants St. John, several swims, and a meal or drink ashore. Just keep the route realistic. You will have a much better day choosing a few excellent stops than trying to collect every name on the map.

FAQ

How many people can ride on MV Poseidon?

The private charter accommodates up to 12 people. The price is for the entire boat and does not change based on having fewer than 12 passengers.

How long is the charter?

The available duration is approximately four to seven hours. The shorter option is a half-day outing, while the longer option is a full-day charter.

What is included in the price?

Snorkeling equipment, bottled water, soda, beer, U.S. park fees, and mooring permits are included. A captain is also included.

Is fuel included?

No. Fuel is charged at $8 per gallon. The stated average is 15 to 25 gallons for a half day and 30 to 45 gallons for a full day.

Where does the boat leave from?

The departure and return point is American Yacht Harbor, 84GX+24H, Smith Bay Road, Red Hook, St. Thomas, USVI.

Can I visit the British Virgin Islands?

The BVI is not included in this booking. A BVI visit can be arranged separately under product code 111649P25.

What happens if the weather is poor?

If the operator cancels because of poor weather, you can choose another date or receive a full refund. You can also cancel for a full refund if you do so at least 24 hours before the start time.