A private power catamaran can turn St. Thomas into a high-speed island adventure. This one puts you on MV Poseidon, a 36-foot TwinVee designed for speed with a stable, dry ride, then lets your captain shape the day around beaches and snorkeling.

I love that you’re not sharing space with a huge crowd. With room for up to 12, you get more time in the water and less time waiting. I also like the hands-on feel: new snorkel gear, a low-draft boat, and a transom ladder that helps you step in close to shore.

One thing to plan for: you’ll sometimes need to adjust. The day depends on weather and sea conditions, and a full day won’t realistically cover every stop people dream up.

Key highlights before you book

• A private charter for up to 12 so the day moves at your pace, not the crowd’s
• 36-foot TwinVee Ocean Cat comfort with speed and stability to keep you dry
• Snorkeling gear plus water and drinks included, including beer
• Low draft + ladder drop-in for easier beach access and quick dips
• Captain-led custom route, with stops picked for the group and the conditions

MV Poseidon: fast, stable, and built for real beach access

MV Poseidon is a 36-foot TwinVee Ocean Cat (often described as fast and stable), and that matters more than it sounds. Power boats can feel rough if they’re underpowered or riding high. Here, the goal is comfort: guests stay dry more often than you’d expect, and you can focus on the islands instead of bracing.

The boat’s “getting you to shore” design is a big deal. It has a low draft and a transom ladder that lets the crew drop you a few feet from the beach. In plain terms, that reduces the awkward shuffle between water and shore. It’s great if you’re hoping to swim, wade, or get the kids playing on sand without turning your day into a logistics exercise.

It also feels like a proper private setup. The boat is set up for a group of 12, which is large enough to spread out, but still small enough that it doesn’t feel like a floating bus.

The pacing game: half day vs full day on St Thomas

This experience runs about 4 to 7 hours, depending on whether you book a half day or full day. That range sounds wide, but it’s one of the smartest ways to match the trip to your energy level.

A half day is the sweet spot if you want:

• a couple beach stops
• snorkeling time
• drinks and music
• and you still want dinner plans later

A full day gives you more flexibility to add a slower beach moment, a longer swim, or a lunch stop. One captain is specifically noted as tailoring the day around what the group wanted, and that adaptability is what makes the longer option feel worth it. In other words, you’re not locked into a rushed checklist.

One practical note from the way people describe their days: don’t count on hitting every beach name listed in sample planning. In real life, travel time between islands, water conditions, and how long you want to snorkel will shape the route. If you want a better day, pick fewer priorities and let your captain optimize the rest.

Beach hopping in the real world: what each stop can offer

You’ll have the chance to visit places like Water Island, Little Buck Island, Secret Harbour, Honeymoon Beach, Trunk Bay, Scott Bay, Maho Bay, and Magens Bay. Some stops have admission included, and some are listed as free, but the bigger value is what these beaches let you do: step off the boat, spend time on sand, and connect the swim portion to an actual beach break.

Here’s how I’d think about them when you plan your route:

Water Island

If you want an easy add-on day starter, Water Island can work well. It’s listed with a short time window, so it’s a good place for quick beach wandering, a swim, and getting your bearings before the snorkeling-heavy stops.

Little Buck Island

This is flagged as having admission included, which is helpful if you’re trying to keep costs predictable. It also tends to fit the flow of a day that mixes shore time and water time without making any one stop drag.

Secret Harbour

This is one of those names that sounds like it belongs to a postcard. In practice, it’s a great “in-between” stop: you get a change of scenery without burning the whole day on one beach.

Honeymoon Beach

Honeymoon Beach comes up often in the stops list, and it’s also mentioned as a place where you can get close enough for kids to play after a swim. If you’re traveling with family, this is the kind of stop that can turn snorkeling day into a full-on beach day.

Trunk Bay

Trunk Bay is another stop where the listing notes admission included. People who like snorkeling tend to love the chance to pair shore time with underwater time, especially if your captain sets you up with nearby spots for fish and coral.

Scott Bay

Scott Bay is included in the stop mix with admission included. I think of it as a place to aim for if you want that steady rhythm: boat, ladder down, water time, then back to the boat before everyone gets tired.

Maho Bay

Maho Bay is often the kind of location you pick for memorable water time. It’s listed with admission included, and it’s specifically tied to turtle encounters in one family story—so if wildlife sightings are your priority, it deserves a spot on your short list.

Magens Bay

Magens Bay is another named stop with admission included. It’s a good candidate for your “big beach moment” since you can plan it as a longer, more relaxed break.

How to choose when you only have a half day: pick one “snorkel-focused” stop and one “beach-focused” stop. Then let your captain adjust the rest to what the group is feeling and what the water is doing.

Snorkeling for turtles and colorful fish: what’s really included

Your day is built around water time. The trip includes snorkeling equipment, and the description emphasizes turtles, colorful coral, and amazing fish. That’s not a guarantee of a perfect aquarium every minute, but the repeated turtle sightings in people’s notes tell me the operators are taking snorkeling seriously and aiming for the right spots.

You’ll get new snorkel equipment, which matters if you’ve ever put on gear that doesn’t seal right. Better gear usually means fewer leaks, less fogging, and more time actually seeing things instead of fiddling.

What you can do to get better snorkeling results

• Arrive ready to go. Don’t show up cold and hurried.
• Ask your captain what they’re seeing that day. Captains named across different experiences—Holly, Glen, Amanda, Wallens, Hillary, Mike, Kyle, Aaron, Bryan, and others—are repeatedly described as adjusting and guiding so people know where to look.
• If you’re nervous in deeper water, take it slow. One group specifically mentions help with conquering fear of deep water. Your confidence will improve faster if you keep the first swim short and calm.

Wildlife variety: beyond turtles

Turtles are a star here, but the water can also throw surprises. One family describes seeing an octopus and even a lemon shark during the day. That kind of moment is never something you can plan on, but it explains why people keep booking this style of trip: when the conditions line up, the underwater world goes from pretty to unforgettable.

Music, drinks, and the kind of comfort you’ll notice

This charter is set up for a fun day onboard, not a barebones shuffle. There’s a Fusion stereo so you can play your vibe while you travel between stops.

Food and drink coverage is also one of the best value pieces. Your private charter includes:

• water and ice
• soda/pop
• beer (listed as alcoholic beverages)
• and, of course, snacks or drinks aren’t the only point here. People care because it keeps the day relaxed instead of turning it into a second planning task.

You can also plan a beach-bar style moment. The description calls out the option to step off the boat and enjoy places like Dinghy’s, Margaritaville, and Lime Out or other island beach bars. That’s not just about fun. A planned stop can make a half day feel like a full event instead of a quick swim-and-go.

Lunch can be worked in too. One story notes dropping into Lovango for lunch and drinks, and it was described as a well-loved part of the day. The takeaway for you: ask your captain about lunch timing early, because the best lunch stop is the one that doesn’t steal your best snorkeling time.

Price and logistics: the real math behind $895.50 per group

The base price is $895.50 per group, for up to 12 guests. That’s the number that makes this feel doable even for families or friend groups, because you’re paying for the entire boat rather than a per-person ticket.

But there are extras you should budget for:

• Fuel surcharge: listed as $8 per gallon, with an average of 15–25 gallons for a half day and 30–45 gallons for a full day.
• Gratuity: 15–20% recommended (captain included, tip not included).

When fuel and tips are added, the total cost rises. Still, it can remain good value if you’d otherwise pay for multiple activities, multiple taxis, and separate snorkeling trips. The private format matters most for families and mixed-age groups. You’re paying to reduce hassle and increase control.

Also, the included fees matter: you’re told U.S. park fees and mooring permits are included. That’s the kind of detail that keeps the day simpler, especially if you don’t want to chase extra charges mid-trip.

St Thomas first, with BVI as a separate option

This experience is focused on St Thomas and nearby areas listed in the stop set. The description also notes that visiting the BVI can be booked separately under a specific product code.

So how should you use that info? If your heart is set on BVI stops, don’t wait for a last-minute change. Plan it as its own trip option. If your goal is St Thomas and nearby snorkeling beaches, this charter is built for that zone and lets your captain tailor within it.

Who should book this charter (and who might want something else)

This is ideal for you if:

• you want private time on the water
• you care about snorkeling with sea turtles
• you’re traveling with kids, teens, or multiple age groups and want control over pacing
• you’d like the day to feel like a mix of beach + water + music + drinks

It’s also a strong fit if you like the “family water fun” style. People mention everything from toddlers to older adults feeling comfortable with captains who prioritize safety and adjust to the group.

One consideration: sea conditions can still affect comfort. Even with a stable boat, one family notes rough waters on their day. If you’re sensitive to motion, bring your usual motion tools. Also, keep expectations flexible: a good captain can adapt, but you still want a plan that respects the ocean.

Should you book MV Poseidon for beach hopping and snorkel time?

Yes, if you want a private boat day that feels efficient and fun, with snorkeling gear included and the ability to build a route around your group. This is the kind of trip that works well when you want more than one beach moment and you don’t want to compromise on time in the water.

I’d especially book it if sea turtles and coral are on your must-do list and you value a captain who talks you through what to expect. The repeated mentions of captains like Holly, Glen, Amanda, Wallens, Hillary, Mike, Kyle, Aaron, and Bryan all point to a consistent theme: people feel hosted, informed, and looked after.

I would hesitate only if your main priority is visiting a long list of every beach possible in one day. For that, you’ll get a better experience by choosing fewer stops and letting your captain optimize the timing.

If you want, tell me:

1) half day or full day,

2) your group size and ages, and

3) whether turtles or beaches matter more,

and I’ll suggest a simple stop order to ask your captain for.

FAQ

How many people can go on this private catamaran?

The boat accommodates up to 12 guests, and it’s private, meaning only your group participates.

How long is the tour?

It runs for about 4 to 7 hours, depending on whether you book a half day or full day.

What boat will we be on?

You’ll be on MV Poseidon, a 36 ft TwinVee Ocean Cat.

What’s included with the charter?

Your private charter includes snorkeling equipment, bottled water, soda/pop, beer, and the captain. It also includes U.S. park fees and mooring permits.

Is fuel included in the price?

No. There is a fuel surcharge billed at $8 per gallon, with averages listed as 15–25 gallons for a half day and 30–45 gallons for a full day.

Do I need to bring snorkeling gear?

No. Snorkeling equipment is included.

Is alcohol included?

Beer is included as part of the charter.

Where is the meeting point?

Meet at American Yacht Harbor, 84GX+24H, Smith Bay Rd, Red Hook, St Thomas 00802, USVI.

Can you customize the route and stops?

Yes. Your captain works with your group to design a custom itinerary.

What happens if weather is bad?

This experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.

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