(340) 773-2628 info@caribbeanseaadventures.com
Mile Mark anchored off Buck Island with a swimmer nearby

Private charter · Up to 40 guests Full Day Private Charter aboard Mile Mark

  • 4.9 on Tripadvisor · 3,000+ reviews
  • 5 hours · you pick the time
  • Up to 40 guests
  • Christiansted or your pickup spot

Mile Mark Full Day at a Glance

Duration
5 hours
Group size
Up to 40 guests
Departures
Flexible: you tell us. Please arrive 20 minutes early.
Boat
Mile Mark, our classic boat with lots of shade
Meeting point
With several boats departing from both Christiansted and Green Cay Marina, please check your confirmation for your departure point, or call us at (340) 773-2628 with any questions. You can also choose your own pickup spot.

A Full Day for Families & Large Groups

The day is yours, with room for groups of up to 40 guests on our biggest private charter.

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You set the time and pickup location based on your needs, and can combine a Buck Island snorkel and beach trip with a relaxing sunset cruise back to Christiansted for the perfect fun-filled day.

  • Snorkel the magical Caribbean underworld at Buck Island Reef
  • Our expert captain and crew will take care of all your needs for an unforgettable day out
  • With room for up to 40 guests, a perfect choice for families and large groups

A Typical Charter Day

It’s your charter, so your captain tailors the day to your group, the weather and National Park Service rules.

  1. Arrival

    Meet your crew

    Meet your crew at the time and pickup spot you choose. Please arrive 20 minutes early.

  2. The ride out

    Head for Buck Island

    Cruise out to Buck Island, with plenty of room on deck for the whole group.

  3. Underwater trail

    Guided snorkel

    Snorkel the reef with your guide; gear and a lesson are included.

  4. Your call

    Beach, swim or explore

    Beach time at Turtle Beach, then a relaxing sunset cruise back to Christiansted if you like.

  5. Heading home

    Cruzan Rum Punch

    Served on the ride back, once you’re outside the park boundaries.

  • A swimmer in the water beside Mile Mark at Buck Island
  • Mile Mark anchored in clear turquoise water
  • The shaded hiking trail to the top of Buck Island
  • Cactus and turquoise bays seen from the Buck Island trail

What’s Included & What to Bring

Included

  • Expert captain and crew
  • Snorkeling lessons and gear
  • National park fees
  • Ice chest
  • Water and soda
  • Cruzan Rum Punch

What to bring

  • Snacks or lunch
  • Drinks for after snorkeling
  • Towel
  • Reef-safe sunscreen (no oxybenzone)
  • Sunglasses and a sun hat
  • Cash for your crew’s gratuity (20–25% is recommended)

Sunscreens containing oxybenzone are prohibited: guests wearing them can’t enter the water. Reef-safe sunscreen is sold in our shop.

Tripadvisor Travelers' Choice 2026

4.9 on Tripadvisor · 3,000+ reviews · Travelers’ Choice 2026

Read reviews
“We absolutely loved it! The water and reef were beautiful and the tour guides were very friendly and helpful! Definitely recommend!”
Whitney · Tripadvisor
“Absolutely great time! Captain and crew made the whole trip enjoyable, educational, fun. We were a 3 generation group and everyone had a good time from the kids to the grandparents. We really appreciated their kindness to our little kiddos.”
Jan D · Tripadvisor

Your boat, your crew, your plan. Senior, military & local discounts available, call (340) 773-2628.

Mile Mark Full Day FAQs

How long is the Mile Mark full day charter?

Five hours, at the time you choose. Please arrive 20 minutes before your scheduled time.

How much does it cost?

From $2,250 for the whole boat and crew, for up to 40 guests; your exact price is shown in the booking calendar. Crew gratuity isn’t included; 20–25% is recommended.

Can we finish with a sunset cruise?

Yes. Many groups combine a Buck Island snorkel and beach day with a relaxing sunset cruise back to Christiansted.

Can we choose what we do?

Yes. It’s your charter aboard Mile Mark: snorkel, beach time or both. We’re happy to accommodate any request as long as it doesn’t violate a National Park Service regulation.

Is food included? Can you cater?

Lunch isn’t included. You’re welcome to bring food and drinks (there’s an ice chest on board), or email info@caribbeanseaadventures.com to ask about having your charter catered.

We’ve never snorkeled. Is that OK?

Yes. Snorkel gear, a lesson and a guided tour are included, and a guide will be in the water with you. We’re happy to assist guests with physical limitations to the best of our ability.

What is the cancellation policy for private charters?

Cancel 48 hours or more before your charter for a 100% refund. Cancellations within 48 hours aren’t refundable, and no-shows are billed in full. If we cancel for weather, we’ll do everything we can to reschedule; if that doesn’t work, you get a full refund.

Our group is bigger than one boat. Can you help?

Yes. We can put more than one of our six boats on the water together. Call (340) 773-2628 to arrange a multi-boat departure.

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