Reviewed · SAIL & SNORKEL TRIPS
Sail/Snorkel Adventure from Sapphire Marina,STT NO CROWDS~ 6 GUEST MAX
This is interesting because you are not doing the usual cattle-car snorkeling. You are on a real sailing vessel with a semi-private group size (up to 6), and you are aiming for calm water and great reef time instead of sitting in line with everyone else.
Two things I love here: the personal pace (smaller group means more attention in the water) and that food and drinks are part of the experience, not an add-on. One consideration is that snorkeling location is weather and timing dependent, so you might sail for a top spot like Caneel Bay, but you could end up snorkeling nearby areas instead.
Key takeaways before you book

- Up to 6 guests keeps this feeling personal, not crowded
- Caneel Bay plus nearby options (Christmas Cove or Lovango) depending on conditions
- Snorkeling gear and flotation devices included, so you can travel lighter
- Snacks plus soft drinks and alcohol on board add comfort during the sail
- About 1 hour in the water is the usual plan, since sailing is part of the 3 hours
Sapphire Beach departure: the start that sets the tone

Your day begins at Sapphire Beach in Smith Bay, St Thomas (00801). This matters because you are starting from a convenient marina area, not out in the far end of the island with a long haul just to get to the fun part.
The vibe from the start is the same vibe you get the rest of the trip. You are on a sailboat, not a big party vessel. Even with good weather, sailing still means some movement. If you usually get seasick, take that seriously and plan ahead.
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Cosmos Mariner and the semi-private setup with Rob and Deb
This trip is run by Sailing The Cosmos Charters, aboard the Cosmos Mariner. The big win is the maximum 6 traveler limit. That usually translates to:
- More space to get settled on the boat
- Easier to hear instructions
- Less waiting around while people figure out gear
- A calmer feeling when you are back in the water
Based on how the crew runs things, Rob and Deb focus on making snorkeling actually work for you. If you have not snorkeled in a while, you will not be left to fend for yourself. The boat setup also includes water flotation devices (like noodles and seat floats), which helps you feel steady before you get out there.
There is also a very practical limit you should know about: the swim ladder is rated for a max capacity of 260 lbs. If you plan to swim, you need to be physically able to climb a small boarding ladder.
Where you snorkel: Caneel Bay and the “best conditions” game plan

Your sailing route targets one of the area’s premier snorkeling zones. The plan is to sail from St Thomas to St John’s Caneel Bay, then spend time snorkeling with tropical fish.
But here is the honest part, and it is exactly why the crew can get you into calm water: Caneel Bay is not always guaranteed. Time and weather decide the final stop, and the captain may snorkel a different location near the area, such as Christmas Cove or Lovango.
That flexibility is valuable for two reasons:
- You are more likely to anchor where the water is calmer, which makes snorkeling easier.
- You get the captain’s local call on conditions instead of forcing a fixed itinerary.
So think of this as a guided “find the best water” snorkel day. If you want the exact same spot every time, this may not be the match. If you want the best chance at smooth water and good visibility, it fits well.
Snorkeling time, gear, and the wildlife you might see

The included snorkeling experience is set up so you do not need to bring much. You get snorkeling equipment and water flotation devices. Bottled water is included too, and you will have snacks available during the sail.
Time in the water is part of the tradeoff for a shorter 3 hour outing. The usual setup gives you about 1 hour of snorkeling time. That is typically enough for:
- One relaxed pass around the reef
- A second try if you want to focus on turtles or fish
- A calm reset if you are new to snorkeling
What you can expect to see, based on past outings, includes sea turtles and lots of reef fish. Many people also highlight wildlife like rays and starfish. Some trips include other reef features such as coral structure and even a shipwreck. You should think of these as possibilities, not guarantees, but they show the kind of snorkeling locations the crew goes after.
Two wildlife tips that help you actually enjoy the water:
- Slow down. The best sightings usually happen when you move less and watch more.
- Position with the current. Even in calm water, your view changes depending on where you float and how you orient yourself.
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The 3 hour pacing: sailing is not just “getting there”

A common disappointment with half-day tours is when most of the time is travel. Here, sailing is actually part of the point. You are not rushing straight to snorkel and back.
The 3 hour plan has this rhythm:
- Sail from Sapphire Beach area toward the snorkeling zone
- Spend focused time snorkeling
- Sail back to the starting point
So yes, there is travel time. But you are also getting island views from the water, and you are getting the full sailing feel. If you love being on boats and like the idea of a real sail, this pacing makes sense. If you only want the maximum minutes in the water, you might feel shortchanged.
Also note a practical reality: conditions can get choppy on the way out or back. If you are prone to motion sickness, consider taking motion sickness medication before you set off, especially if you are sensitive to boat movement.
Snacks, drinks, and the feel-good onboard extras

One reason this tour gets recommended so often is the onboard comfort. You get:
- Bottled water
- Soda or soft drinks
- Snacks
- Alcoholic beverages (served on board at no additional charge)
This does two things for you. It keeps the mood relaxed while you are waiting for the best snorkel moment, and it makes the return sail feel like part of the fun instead of a “now hurry up” finish.
People frequently mention good music and the drinks flowing during the outing. There is also mention of rum punch, so if you like rum-style drinks, you will probably be in a happy place on board.
If you plan to snorkel right after drinking alcohol, use your judgment. Snorkeling is easier when you are comfortable and clear-headed.
What to bring: the stuff they do not cover

You will be happier if you come prepared. Here is what is and is not included.
Included:
- Snorkeling equipment
- Water flotation devices
- Bottled water
- Soft drinks and alcohol
- Snacks
Not included:
- Towels
- Sunscreen
Sunscreen is a big deal here because the tour asks you to use reef-safe products and avoid sprays or oils. Bring something reef-safe in a form you are comfortable applying before you get in the water.
Towel planning is simple: pack a towel anyway. You do not want to be improvising on the beach after getting out of the ocean.
Price and value: is $159 worth it?

At $159 per person for about 3 hours, this is not a bare-bones snorkel. You are paying for the smaller group feel plus a lot being bundled.
What you are getting for the money includes:
- A semi-private charter with a max of 6 people
- Snorkeling gear plus flotation devices
- Snacks, soft drinks, and alcohol included
That combo is what makes the value feel real. Many snorkeling experiences separate the boat, the gear, and the food. Here, you get all of it in one go, and you also get sailing time, not just a quick drop-off.
One more value point: the crew’s approach. People highlight patience and instruction, especially for first-timers or less confident swimmers. When you are new, the “how” matters as much as the “where.”
Who should book this sail and snorkel
This works best if you want:
- A smaller group with a more personal feel
- A mix of sailing and snorkeling
- A crew that takes time with instruction, not just a quick handoff
- The chance at turtles, rays, starfish, and reef fish
It is also a good pick for couples and small friend groups who do not want the busy, high-noise, party-boat energy.
Consider another option if:
- You want maximum time in the water over everything else
- You are very sensitive to motion and do not want any chance of choppy sailing
- You cannot comfortably climb the small boarding ladder to swim
Should you book this Cosmos Mariner sail and snorkel?
If your ideal St Thomas snorkeling day sounds like calm water, real reef time, and a small boat with snacks and drinks on board, this is a strong choice. The up to 6 guest limit is the clearest signal that you will get more attention and less waiting around.
Book it if you can roll with the idea that the snorkeling spot may change based on conditions. That flexibility is what often keeps the experience smooth and enjoyable. Pass if you are chasing a long snorkel session no matter what, or if motion sensitivity is a deal-breaker.
FAQ
Where does the sail and snorkeling tour start?
It starts at Sapphire Beach, Smith Bay, St Thomas 00801, USVI, and ends back at the meeting point.
How long is the tour?
The tour runs for about 3 hours.
How many people are on the boat?
There is a maximum of 6 travelers.
What snorkeling gear is included?
Snorkeling equipment is included, along with water flotation devices such as noodles and seat floats.
Are drinks and snacks included?
Yes. You get soft drinks, alcoholic beverages, snacks, and bottled water included.
Where will we snorkel?
The trip sails toward St John’s Caneel Bay, but snorkeling location is not always fixed. Depending on time and weather, the captain may snorkel nearby spots such as Christmas Cove or Lovango.
Do I need to bring a towel?
Yes. Towels are not included.
Is sunscreen provided?
No. Sunscreen is not included. The tour requests reef-safe sunscreen, and says no sprays or oils.
Are there physical requirements?
You should have moderate physical fitness. If you plan to swim, you must be physically able to climb the small boarding ladder. The swim ladder is rated for a maximum of 260 lbs.
What is the cancellation policy?
You can cancel for a full refund if you cancel up to 24 hours in advance. If you cancel less than 24 hours before, the amount paid is not refunded. The experience can be canceled due to poor weather, and in that case you will be offered a different date or a full refund.
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