Private Full Day Sail/ Snorkel Experience USVI (Sapphire Marina, STT pick up)

The best part of this St. Thomas excursion is simple: you control the day. Captain Rob and Deb take up to six people aboard Cosmos from Sapphire Marina, then shape the route around your group’s interests, from quiet sailing to snorkeling, swimming, beach time, or a little of everything.

I like the small private setting, where a family or group of friends can settle into its own pace. I also like the homemade lunch, especially the crab cakes, plus the useful extras such as snorkeling gear, flotation toys, and a freshwater rinse.

The main consideration is the price: $1,975 per group is a serious spend for two people, though it becomes much better value when divided among six. You also need to bring towels and suitable reef-safe sunblock, and the day depends on good weather.

Key points to know before booking

• Private boat for up to six: You will not share the sailboat with another group.
• A truly flexible day: Choose sailing, swimming, snorkeling, beach stops, or a quiet mix of all four.
• Captain Rob and Deb host the trip: Their warm, hands-on style suits families, couples, and first-time snorkelers.
• Lunch is made onboard: Homemade crab cakes and salad are a recurring favorite, with snacks and drinks also provided according to the day.
• Snorkeling can be excellent: Possible stops include Honeymoon Beach, Christmas Cove, St. John, and Greater St. James.
• Plan for practical details: Bring towels and reef-safe, non-spray sunblock. The boat has a swim ladder with a 260-pound maximum capacity.

Sailing from Sapphire Beach at 9 a.m.

Your day begins at Sapphire Beach in Smith Bay, on the eastern side of St. Thomas. The listed start time is 9 a.m., and the trip returns to the same meeting point after about seven hours.

Starting from Sapphire is useful if you are staying near the east end of St. Thomas or want a straightforward dock departure. The boat has dock-slip access, so boarding and getting off are easier than climbing into a small vessel from a beach. Public transportation is available nearby, though you should still allow time to arrive at the marina and find the correct departure point.

The private format changes the feel right away. You are not trying to match the wishes of a large group, and you do not need to spend the morning waiting for late arrivals or following a fixed list of stops. Before and during the sail, you can discuss the day with Rob and Deb and adjust the plan to suit the weather and your energy.

That flexibility matters on a seven-hour outing. Some people want a full day of active snorkeling. Others are happy with one good swim, a long lunch, and plenty of time sitting in the breeze. Cosmos can accommodate both styles.

What a customized itinerary really means

This is not a rigid cruise with a guaranteed sequence of stops. The route is set with your group and the crew, so your final day may depend on weather, sea conditions, and the interests of everyone aboard.

You can ask for a sailing-focused day, spending more time underway and less time in the water. You can also make snorkeling the main event, with the crew choosing spots based on conditions and your preferences. A slower plan might include a beach stop, swimming, lunch, and time to relax aboard.

That freedom is especially helpful for mixed groups. A strong swimmer can snorkel while someone else lounges on the boat. A child can use the flotation toys. Someone who is not comfortable snorkeling can still enjoy the sail, scenery, lunch, and freshwater rinse without feeling that the whole day revolves around the water.

Honeymoon Beach is one possible snorkeling stop. Other outings have included waters around St. John and Greater St. James, as well as Christmas Cove. You should treat these as possible destinations rather than promised stops, since the final choice belongs to the captain and the day’s conditions.

Snorkeling at Honeymoon Beach, Christmas Cove, and beyond

The snorkeling is a major reason to book this charter. Past outings have included colorful fish, sea turtles, stingrays, and a range of other sea life. You may snorkel directly from the boat, which saves time and lets the crew choose a spot that fits the day.

Honeymoon Beach is appealing for anyone who wants a scenic stop with the option to get in the water. Christmas Cove has also been used for snorkeling and is a popular choice for seeing marine life. The waters around St. John and Greater St. James give the captain more room to tailor the route.

The important point is not to book this expecting one guaranteed reef or animal sighting. Marine life and water clarity change, and the trip is not sold as a fixed wildlife encounter. What you do get is a captain who can use local judgment and respond to your group rather than taking every boat to the same place.

Snorkeling equipment is included, so you do not need to pack your own mask, snorkel, or fins. Flotation water toys are also available. If you are rusty or nervous, say so early. Rob and Deb have helped hesitant snorkelers get comfortable in the water and assisted people getting in and out.

There are a few physical points to keep in mind. You should have a moderate fitness level, and the swim ladder is rated for a maximum capacity of 260 pounds. The boat provides easy dock boarding, but swimming from a sailboat still requires enough mobility to use the ladder safely.

A relaxed sail for people who do not want to snorkel

You do not need to be an enthusiastic swimmer to enjoy this trip. One of the strengths of a private charter is that your day does not become a contest between snorkelers and non-snorkelers.

You might spend part of the morning under sail, then anchor while some of your group swims. Someone who prefers to remain onboard can read, talk, eat lunch, or simply watch the water. The boat’s private setup makes this much more comfortable than a large shared excursion where everyone is expected to follow the same schedule.

The sailing itself is also a key part of the experience. The point is not only to reach a beach or snorkeling site. You have time on the water, with the chance to enjoy the quiet and the changing views between stops. If your ideal Caribbean day includes less rushing, tell the crew. They can build the outing around that preference.

This is a good match for couples who want a peaceful day, families with different activity levels, and small groups that want conversation and space rather than a loud party boat.

Lunch onboard, with crab cakes as the main event

Lunch is homemade by Deb and served onboard. Crab cakes with salad have been a recurring highlight, and the meal is one of the details that helps this feel like a full-day outing rather than a seven-hour boat transfer with a few swim stops.

Food tastes better when you do not have to interrupt the day to find a restaurant. You can eat after a swim, while anchored in a quiet spot, or during a natural pause in the sailing. Snacks and drinks have also been part of the onboard hospitality, though the supplied details do not promise a specific full menu beyond lunch.

If you have dietary needs or strong food preferences, contact the operator before the trip. The available information confirms the homemade lunch, but it does not provide a full list of ingredients or substitution options.

The practical catch is that towels are not included. Pack one for swimming and one for sitting comfortably after you rinse off. Also bring reef-safe sunblock, but do not bring spray or oil products. This is both a boat-care issue and a sensible choice around coral and marine life.

Rob and Deb bring a personal hosting style

Captain Rob and first mate Deb are central to the experience. Their role goes beyond steering the boat and handing out equipment. They help plan the day, explain what is happening, and provide a friendly presence throughout the sail.

That personal approach is useful if you are unsure how much activity you want. You can ask for snorkeling guidance, request a quieter pace, or explain that one member of your group would rather stay onboard. Their past outings have included couples, families with children, and people returning to snorkeling after a long break.

Families should pay attention to the specific reports of children enjoying the water, including one seven-year-old who was thrilled to snorkel with sea turtles and stingrays. That does not guarantee the same sightings, but it suggests the crew is comfortable making the day work for younger participants.

The boat is also the crew’s home, according to the information provided. That may add warmth and character, but it can feel more personal than stepping aboard a commercial tour boat. If you prefer a polished, large-scale operation with many passengers and fixed services, this is a different kind of outing.

Is $1,975 a good value?

The price is $1,975 for the whole boat, with up to six people. For two people, that is a costly day on the water. For six, it works out to about $329 per person before gratuity, which makes the private format much easier to justify.

You are paying for more than transportation. The price covers approximately seven hours, a private captain and crew, a flexible itinerary, snorkeling equipment, flotation toys, lunch, and a freshwater shower rinse. You also avoid sharing the boat with strangers and can give the captain direct input about the pace and stops.

The value is strongest for a group that would otherwise book several separate activities, or for a family that needs flexibility. It is also attractive for a special occasion, such as a honeymoon or milestone birthday, when privacy and an unhurried schedule matter more than finding the cheapest boat trip.

The value is weaker if you only want a short swim or a quick look at the coast. A half-day or shared excursion would likely make more sense for a limited budget. You should also add a crew gratuity of about 15 to 20 percent, described as the industry standard, when calculating the total cost.

Who will enjoy Cosmos most?

I would choose this trip for a group that values time, privacy, and choice. It suits:

• Families with children and mixed swimming abilities
• Couples who want a quiet private sail
• Small groups celebrating a special occasion
• Strong snorkelers who want several possible water stops
• People who want a boat day without a party atmosphere
• Visitors staying near Sapphire Beach or the east end of St. Thomas

It may not be ideal if you want a guaranteed list of destinations, a very low-cost outing, or an intense watersports program. The experience is built around sailing, conversation, snorkeling, swimming, and relaxation rather than a packed schedule of high-speed activities.

You should also think honestly about mobility. Boarding is made easier by the dock slip, but using the swim ladder is part of the water experience, and its stated maximum capacity is 260 pounds. Anyone with physical concerns should ask the operator specific questions before booking.

Weather, cancellation, and what to pack

The excursion requires good weather. If poor conditions force a cancellation, you can choose a different date or receive a full refund. You can cancel for a full refund if you do so at least 24 hours before the 9 a.m. start time. Changes or cancellations inside that window are not accepted and are not refunded.

For the boat, pack:

• Towels
• Reef-safe sunblock, with no sprays or oils
• A swimsuit and a change of dry clothes
• Any personal medicines or comfort items you need for seven hours

The supplied details confirm snorkeling gear, flotation toys, lunch, and a freshwater rinse. You should not assume towels or sunblock will be available onboard.

My call: book it for the right kind of day

Book this private sail if you want the freedom to make St. Thomas your own for a day. The best reasons are the small group size, the ability to include non-snorkelers, the relaxed pace, and the chance to visit water around St. Thomas, St. John, or nearby islands as conditions allow.

The homemade crab cake lunch, capable hosting from Rob and Deb, and hands-on help for less confident swimmers add real value. I would be especially tempted to book it for four to six people, when the cost per person becomes more reasonable.

Skip it if $1,975 feels too high for a boat day, if you want a fixed itinerary, or if your group is not comfortable using a swim ladder. For everyone else, Cosmos offers a personal, flexible way to spend a full day on the Virgin Islands water without being herded from one scheduled stop to the next.

FAQ

Where does the private sail depart?

The tour starts at Sapphire Beach in Smith Bay, St. Thomas, USVI. It ends back at the same meeting point.

What time does the excursion start?

The scheduled start time is 9 a.m.

How long does the trip last?

The full-day experience lasts approximately seven hours.

How many people can join the private charter?

The boat accommodates a private group of up to six passengers.

Is lunch included?

Yes. Homemade lunch prepared by Deb is included. Crab cakes and salad are associated with the onboard meal.

Are snorkeling equipment and flotation toys provided?

Yes. Snorkeling equipment and flotation water toys are included.

What should I bring, and what is not included?

Towels and sunblock are not included. Bring reef-safe sunblock, but do not use spray or oil products. The swim ladder has a maximum rated capacity of 260 pounds.