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

A private, fast power catamaran day in St Thomas is interesting because you can move between beaches quickly, then step off close to shore. It is not a tour bus day with lines and waiting. It is a boat day where your group sets the pace, with the sea as the schedule, on a 36 ft TwinVee designed for speed and stability.

I like two things a lot. First, you charter the whole MV Poseidon for up to 12, and you work with your captain to shape the route around what you want to see. Second, you get snorkeling equipment plus drinks onboard, so the “time to plan” stays low and the “time in the water” stays high.

One drawback to plan for is cost, mainly the fuel surcharge that is billed separately, along with weather. Also, even though there are many great beach options, your 4 to 7 hour window means you will not hit every stop listed in one run.

Key highlights worth caring about

• Private boat for up to 12 so you control the stops and the vibe
• Low draft and transom ladder for easier beach access and quick swims
• Snorkeling gear included with chances to swim with sea turtles and see coral
• Drinks and refreshments included including beer, plus water and soda
• Captain-led itinerary with a focus on local knowledge and adapting to your group
• Several famous St Thomas and St John beaches built into a flexible route

Why this private catamaran day feels different in St Thomas

If your plan is to see more than one beach without spending half the day trapped in traffic, ferry lines, or waiting for “the next group,” this is the kind of day that changes your vacation. You are on MV Poseidon, a TwinVee Ocean Cat sized for comfort and movement, and you are not sharing the boat with strangers.

The biggest practical benefit is control. You can do more short swims, more time on a beach that surprises you, or fewer stops if the sea is being moody. That flexibility is a real quality-of-life upgrade, especially with kids, mixed-skill swimmers, or anyone who does not want to haul gear around all day.

And yes, snorkeling is a core reason people book. The chance to swim with sea turtles is the headline, but what makes it work is that you have a captain who can put you near good water and keep the day moving. Some captains are also strong on island history and island geography, including names like Holly, Glen, Amanda, Wallens, Mike, Kyle, Bryan, Aaron, and Hillary, based on the experience styles you will likely run into.

MV Poseidon: the boat details that matter on a beach day

This is a 36 ft twin-hull power catamaran built for speed and stability, but the more important detail is what that means for you. Less rolling means you stay comfortable longer, and you keep your energy for snorkeling instead of spending the day feeling seasick.

MV Poseidon is described as the most comfortable powerboat on the island, and it is made to be “stay dry” comfortable. That matters if you are coming from a cruise ship day, or if you just want a charter where you can settle in right away.

Two tech details help with actually getting in and out of the water:

• Low draft means the boat does not have to stay far from shore.
• A transom ladder plus close-to-beach drops makes it easier to step in and out without a long climb.

You are also covered on the fun side. There is a FUSION stereo, so you can play music that matches your mood, from chill beach vibes to full-on party energy. Many people love this because you are not relying on someone else’s playlist.

If you are picky about meeting the plan, you will also appreciate that they use a mobile ticket, which cuts down on paper fuss.

Snorkeling on this charter: turtles, coral, and realistic expectations

The snorkeling setup is not just “you might see turtles.” You get brand new snorkeling equipment, which is a big deal for comfort. I do not want to spend my time fiddling with gear mid-trip. With equipment provided, you can get in the water faster and stay focused on the sea.

What you should expect to look for:

• Sea turtles while snorkeling
• Colorful fish and coral
• Sometimes extra surprises, like an octopus or a lemon shark, depending on what the water is doing that day

Now the reality check, because it helps you have a better day: fish sightings are not guaranteed. In clear spots you might see lots of colorful fish, and in other conditions they might be a bit shy, or the water might not give you the same contrast. The upside is that you are still out on beautiful coastlines and usually get at least one memorable swim.

If you want the highest odds of a great snorkeling run, lean into what your captain offers. These are the people who decide where you go next, how long you stay, and when you hop back on board. Bring a flexible attitude and you will get the best version of the day.

The route: how your captain builds a St Thomas beach-hopping day

This charter is built around flexible stops. The key idea is that the listed beaches are the options, not a rigid checklist. Your captain works with your group to decide what the day looks like, within the 4 to 7 hour time frame.

Here are the stops that commonly fit into the rotation, and what makes each one a smart move.

Water Island: a quick, scenic start

Water Island is one of those places that works well early in the day. A short stop gives you a chance to get out on the water, get your bearings, and decide how your group wants to spend the rest of the day.

It also tends to be a good “warm-up” if you have kids or first-time snorkelers. You are not committing to a long run right away, and the boat can pivot if you want to chase calmer water.

Admission noted for this stop is free.

Little Buck Island: classic snorkeling territory

Little Buck Island is known as a go-to snorkeling stop. The entry for this location is listed as included, which is one less detail you have to manage.

The appeal is simple: good underwater life in a place that tends to deliver. If your priority is snorkeling that feels like its own world, this is a strong candidate for one of your main swims.

Secret Harbour: a calmer option with an easy “hang and swim” feel

Secret Harbour can be a great middle stop when you want a break between bigger beach names. It is also useful when you want less “tourist energy” and more water time.

If your group wants shorter swims and more lounge time, this is a stop that supports that. Just go in knowing that the captain may adjust timing based on conditions.

Admission noted for this stop is free.

Honeymoon Beach: close access and a fun family moment

Honeymoon Beach stands out for pure beach fun. It is the kind of stop where you can get off the boat, step close to shore, and let everyone settle in.

One nice thing for families is that a toddler and adults can share the moment, because the beach time is not just for show. You can snorkel, then hang, then snack, then snorkel again if the sea stays cooperative.

Admission noted for this stop is free.

Trunk Bay Beach: a big-name beach stop with snorkeling draw

Trunk Bay is one of the most famous beach stops in the US Virgin Islands. It is also listed as included for admission, so you do not have to plan extra entry fees separately for this stop.

This is a great choice when you want the “wow beach” plus snorkeling in the same day. The drawback is that it is popular, so you may want to time your swim carefully and be ready for people on shore.

Scott Bay Beach: a strong “snorkel first” pick

Scott Bay is listed as an admission-included stop. People tend to value it because it is a practical place to get a quality swim without burning the entire day in transit.

If you want a day focused on water time, Scott Bay often fits that plan well.

Maho Bay: a recognizable stop for swimming and beaches

Maho Bay is listed as admission included. It works well if your group is aiming for a mix of beach time and snorkeling.

The practical tip is to treat it as one of your anchor stops. When you find a captain who times the day well, your snorkeling window and beach window both feel productive, not rushed.

Magens Bay: the beauty stop

Magens Bay is also listed as admission included. This is the beach choice that often delivers on postcard scenery.

If your group likes photos, easy beach lounging, and an overall “vacation beach” feel, this is the one to put in. The trade-off is that it can eat time if your group gets distracted in the sand. If you build your schedule with that in mind, it becomes a win.

Drinks, music, and the low-fuss comfort that makes the day smoother

Part of what you are paying for is that you do not have to run your day like a logistics project. Your private charter includes:

• Bottled water
• Soda
• Beer
• Alcoholic beverages
• Ice
• Captain included (tip not included)

You also get the freedom to build a day where you are not constantly deciding where to eat and what to pack. A few reviews highlight a lunch stop at Lovango, which is an example of the kind of break your captain can help arrange, but your day can also stay beach-to-beach if you prefer.

Music helps too. The FUSION stereo is not just background noise. It keeps the mood up while you are traveling between swim stops.

If you care about value, think about what this replaces. It can replace a bunch of separate purchases and coordination, especially if your group would otherwise be paying for entry fees and buying drinks on multiple stops.

Price and what actually makes it feel worth $895.50

The price shown is $895.50 per group, for up to 12 people. That means the cost is not “per person.” It is per boat. For families and small groups, this can be a very efficient way to get a premium experience.

But here is the part you should calculate before you book:

• Fuel surcharge is billed separately at $8 per gallon
• Typical averages are listed as 15 to 25 gallons for a half day, and 30 to 45 gallons for a full day

So the real math is base charter price plus fuel surcharge plus tip.

Tips are not included, and 15 to 20% is recommended. If you want the smoothest planning, assume a gratuity at booking time and treat it as part of your total budget.

When does it feel like a bargain?

• When you fill most of the 12 spots with people who actually want snorkeling and beach hopping
• When you want the privacy and flexibility, not a set-group route
• When your group would otherwise pay separately for multiple paid activities, multiple food stops, and multiple transport arrangements

When might it not be the best deal?

• If you are traveling solo or as a couple and you are paying for an entire boat you might not need
• If your group is mainly interested in scenic cruising and not much snorkeling, because that is the experience’s core engine

Timing: getting the most from 4 to 7 hours

This is where many boat days make or break. You want enough time to do the water stuff, but not so much time that you feel stuck on a schedule.

Half-day charters are often the sweet spot for families, because you can do a strong combination of beach time and at least a couple snorkeling windows without the day dragging. Full-day charters are best if snorkeling is a top priority for everyone and you want more stop flexibility.

Also, plan to arrive early so you can handle any paperwork and be ready to go. One very practical tip from real-world experiences is to be there about 15 minutes before departure. It reduces stress and helps your captain start the day smoothly.

Finally, remember that this experience requires good weather. If the sea is rough, you might see schedule adjustments or postponements. The good part is that you are chartering, so your captain can make smart choices for safety and comfort, rather than forcing a one-size-fits-all plan.

Choosing the right captain vibe for your group

One of the underrated strengths of this kind of private charter is that your captain matters. You will see names pop up repeatedly, like Holly, Glen, Amanda, Wallens, Hillary, Mike, Kyle, Bryan, Aaron, Vic, Hans, and Valley.

What those captains seem to have in common from the experiences shared is a mix of:

• Safety-first professionalism
• Knowledge of local islands, plus how to find good aquatic viewing spots
• A willingness to tailor the day, not just run a checklist

If you want a day that feels educational and interactive, look for the captain style that leans into geography and island history, like Glen and Holly. If you want a family-friendly tone with extra patience, names like Holly, Hillary, and Bryan show up in that role.

And for groups who worry about safety or depth, you will usually do best by telling your captain directly what you want to feel comfortable with. The best captains adjust in the moment.

Should you book this St Thomas private catamaran?

Book it if your goal is a private, comfortable boat day with snorkeling equipment included, drinks onboard, and a captain who can tailor the route so you actually get time in the water instead of just looking at it. The price becomes much more reasonable when your group fills the boat, and the low-draft access makes beach-hopping feel easy.

Skip it or consider another option if you are traveling as a couple or solo and the idea of paying for up to 12 seats does not sit right with your budget. Also, if you are not excited about snorkeling at all, you might find a lighter day on the water better suits your style.

If you do book, decide ahead of time what matters most: turtles and coral, classic beach scenery like Trunk Bay or Magens Bay, or more “quick swim” stops. Then communicate that to your captain at the start. You will get a day that feels like it was planned for you, not just scheduled at you.

FAQ

How many people can you bring on this private charter?

The MV Poseidon charter is for up to 12 guests, and it is a private tour, meaning only your group participates.

How long is the boat tour?

The duration is listed as 4 to 7 hours, approximately.

Where do we meet for the tour?

The meeting point is American Yacht Harbor, 84GX+24H, Smith Bay Rd, Red Hook, St Thomas 00802, USVI. The activity ends back at the meeting point.

What is included in the price?

Your private charter includes U.S. park fees and mooring permits, plus bottled water, ice, soda, and beer. Snorkeling equipment is included, and the captain is included as well. Tip is not included.

Is fuel included?

Fuel is not included. There is a fuel surcharge billed at $8 per gallon, with listed averages of 15 to 25 gallons for a half day and 30 to 45 gallons for a full day.

Do you get snorkeling gear?

Yes. Snorkeling equipment is included for the charter.

Are admission fees included for the beaches?

US park fees and mooring permits are included. Also, the listed stops show admission as included for some beaches (like Little Buck Island, Trunk Bay Beach, Scott Bay Beach, Maho Bay Beach, and Magens Bay) and free for others (like Water Island, Secret Harbour, and Honeymoon Beach).

Do you need good weather for this experience?

Yes. The experience requires good weather. If it is canceled due to poor weather, you will be offered a different date or a full refund.

How do cancellations work?

Free cancellation is available up to 24 hours in advance for a full refund. If you cancel less than 24 hours before the start time, the amount paid is not refunded.