Koh Chang: 3 or 4 Islands Snorkel & Beach Tour by Big Boat

Koh Chang’s best water day is less about racing from one stop to the next and more about having enough room to enjoy the sea. This big-boat snorkel trip combines coral reefs, calm swimming stops, a beach break, and lunch cooked on board for $28, an appealing price for a full day on the water.

I like the choice between the relaxed 3-island route and the longer 4-island trip, and I like that the crew includes an underwater photographer rather than leaving you to document everything from the boat. The main drawback is the ride: rough seas can make the crossing bumpy, and fins are not included.

Key points to know

• Two routes suit different energy levels: The 3-island tour runs about 10:30 AM to 4 PM, while the 4-island option runs about 9:30 AM to 4:30 PM.
• The 4-island route reaches Koh Rang National Park: Expect three snorkeling stops around one larger island and three smaller islets.
• Lunch is cooked on the boat: Chicken-based Thai food, fruit, water, and coffee are included.
• Hotel pickup is limited to Koh Chang’s west coast: Transfers reach as far as White Sand Beach, not the north or east side.
• The boat offers useful comfort: There is space to sit in sun or shade, plus a toilet, life jackets, masks, and a photographer.
• Bring cash for the 4-island park fee: Adults pay 200 baht and children ages 5 to 9 pay 100 baht.

Choosing between three islands and four

The 3-island trip is the sensible choice if you want a shorter day or are testing your sea legs. It leaves at 10:30 AM and returns around 4 PM, with the island area roughly 40 minutes from the pier.

You visit Koh Wai, Koh Lao Ya Nai, and Koh Klum. The day includes two snorkeling spots where you can also swim toward shore, plus about an hour at a beach with turquoise water. Open-sea fishing may also be offered, which adds a simple bit of fun for children and anyone who wants a break from snorkeling.

The 4-island trip starts earlier, at 9:30 AM, and returns around 4:30 PM. It takes about 1.5 hours to reach the Koh Rang area, so this route gives you more time on the water but also more time sitting on the boat.

The route includes Koh Rang, Koh Yak Yai, Koh Mapring, and Koh Yak Lek. In practical terms, you visit one larger island and three smaller islets near Koh Rang National Marine Park. You get three snorkeling stops of about 40 minutes each and a one-hour beach stop.

I would choose the 4-island route if snorkeling is the main reason you came. Choose the 3-island option if you want a pleasant half-day feel, enjoy beach time, or are traveling with children who may not want seven hours at sea.

The boat ride from Bang Bao Pier

The boat is larger and more comfortable than the speedboats commonly used for island trips. You get proper seating, open areas, covered sections, and enough room to move around between swims. A toilet is on board, which matters during a long day with children.

The larger hull also makes the trip less cramped than a small speedboat, though you should keep expectations realistic. Some departures can feel busy, especially at popular times. The boat is comfortable for the price, not a private yacht.

Sea conditions make a big difference. In calm weather, the ride is part of the pleasure, with views across Koh Chang’s coast and the smaller islands ahead. When the wind rises, the crossing can become rough. You may find the boat moving heavily, so take the offered seasickness tablet if you know you are sensitive.

The long crossing on the 4-island route is the tradeoff for reaching Koh Rang. If you dislike boat rides, the 3-island tour gives you a shorter run and still provides snorkeling, swimming, and beach time.

Snorkeling around Koh Yak Lek and Koh Mapring

On the 4-island route, the first stops are usually around Koh Yak Lek and Koh Mapring, though weather and sea conditions can change the order. Each water stop lasts about 40 minutes, enough time to swim out, look around, and return without feeling hurried.

You can expect warm water, coral formations, and many small fish. The water may be clear enough to see the reef well, but the coral is not uniformly colorful. If you have snorkeled in famous reef areas elsewhere, some sites may seem modest. The pleasure here comes from the easy access, warm sea, and repeated chances to see fish rather than from one huge reef.

The crew points out better places to look and can help you get comfortable in the water. This is especially useful if you are a weak swimmer. Life jackets are included, and crew members have helped nervous swimmers stay involved instead of sitting out the whole day.

Masks are supplied, and the equipment is generally considered good quality. Fins are not included, so strong swimmers may find the swimming less efficient. If you own compact travel fins, bring them. Otherwise, the stops remain manageable for most casual snorkelers.

The photographer is another useful touch. Underwater photos are taken during the swims, along with casual shots on the boat. Tell the guide clearly that you want photos, since the photo process may not be explained to everyone. The service is included, but the practical details of how and when you receive the images should be confirmed on the day.

Koh Rang National Park and the white-sand beach

Koh Rang is the main reason to pay extra for the 4-island trip. The area is protected as a national marine park, and the three nearby islets keep the snorkeling stops close together. That means less time spent traveling between water entries once you reach the park.

The scenery is the classic reward: clear water, pale sand, rocky island edges, and coral below the surface. One stop includes about an hour to relax on a picturesque beach. This is your chance to dry off, swim in shallow water, sit in the sand, or simply enjoy being somewhere without an engine running.

The beach is not always easy for everyone to reach. At some stops, the pontoon may not extend fully to shore, and getting off can require care. Water shoes are useful because sand and rock can become hot, and some island surfaces are uncomfortable under bare feet.

Do not expect each snorkeling stop to feel completely different. The islands are close together, and several sites share a similar underwater character. That is not necessarily a weakness if you want a lot of water time, but it may feel repetitive if you prefer sightseeing on land.

Koh Wai, Koh Lao Ya Nai, and Koh Klum on the shorter route

The 3-island itinerary offers a gentler mix of activities. Koh Wai and Koh Klum provide snorkeling and swimming, while Koh Lao Ya Nai includes time to relax on the beach. The boat reaches the area in about 40 minutes, so you spend less of the day in transit.

Koh Wai is a good fit for first-time snorkelers because you can combine a water stop with the option of swimming toward shore. Families may appreciate having a beach nearby, especially if children need a pause from wearing masks.

Koh Lao Ya Nai supplies the slower hour of the day. You can swim in warm water, walk along the beach, or sit back while the crew prepares the next part of the trip. The 3-island route is not only a reduced version of the longer one. It has a better balance for people who want snorkeling without making it the entire day.

Koh Klum adds another water stop and may include open-sea fishing. The fishing is basic rather than a serious angling session, but it can be a welcome diversion for children. Bring patience, since the fun is in trying rather than expecting a large catch.

Lunch on board and the practical comforts

Lunch is a basic Thai meal prepared on the boat. It is chicken-based, with fruit served later, often watermelon and pineapple. Water and coffee are included, and additional drinks or snacks may be available to buy, including beer, soda, crisps, and noodles.

For a boat excursion at this price, the meal is more useful than fancy. You get a hot, filling break without having to pack a full lunch. Vegetarian food can be arranged if you tell the operator one day ahead. If you have other dietary limits, explain them before departure rather than waiting until you are seated.

Bring your own snacks as well. The day is long, especially on the 4-island route, and children may want something between the included meals and fruit. Sunscreen, sunglasses, swimwear, and a towel belong in your day bag. Cash is also wise for the national park fee and anything sold on board.

The boat has both sun and shade. I would claim a shaded place early, then move around during the day. Wet towels, salt, and direct sun can wear you down faster than expected.

Hotel transfers, meeting point, and timing

Pickup is included only from the west side of Koh Chang, as far north as White Sand Beach. For the 3-island tour, shared pickup runs roughly from 9 AM to 9:50 AM. The 4-island pickup runs roughly from 8 AM to 8:50 AM.

If you stay on the north or east side, book the option without transfers and arrange your own ride to Bang Bao Pier. The meeting-point instructions matter: parking is available, but the walk from the parking area to the dock can be long. Arrive by the stated meeting time and do not cut it close.

Shared transport can feel packed, and Koh Chang’s roads can be winding. That is part of the transfer, not an extra charge, but leave room for delays. If you miss pickup, the driver may wait briefly before the booking is treated as a no-show.

The provider allows cancellation up to 24 hours ahead for a full refund and offers reserve-now, pay-later booking. Weather still controls the day. If conditions are unsafe, the tour can be canceled, rescheduled, or refunded.

What the $28 price really buys

At $28 per person, the package gives you a lot: boat transport, a guide, snorkeling mask, life jacket, lunch, fruit, water, coffee, use of the toilet, hotel transfer from the west coast, and underwater photography.

The 4-island trip has one extra cost: the Koh Rang National Marine Park fee, 200 baht per adult or 100 baht for children ages 5 to 9. The 3-island option has no park fee. Parking may cost about 70 baht if you drive yourself, so carry cash even if you do not plan to buy anything else.

The price is strong for families and couples who want transport and food handled in one package. It is less attractive if you want a private boat, a tiny group, or specialist reef instruction. This is a shared outing designed to give you a full day of swimming and snorkeling at a modest cost.

The overall rating is 4.3 from 723 bookings, with the most consistent praise going to the crew, organization, food, spacious boat, and snorkeling stops. The recurring cautions are also clear: the boat can feel crowded, the guide’s announcements may be hard to hear over the engine, and coral quality varies from stop to stop.

Who should book this Koh Chang boat trip?

I would recommend it to first-time snorkelers, families, couples on a budget, and anyone staying on Koh Chang’s west coast. The staff are attentive in the water, and non-swimmers can still enjoy the boat, beach, and views, though getting ashore may be awkward at some stops.

Choose the 3-island tour if you want a shorter outing, more relaxed pacing, or a family-friendly mix of beach time and snorkeling. Choose the 4-island trip if you care most about seeing several reef sites and do not mind the earlier start and longer crossing.

I would not choose it if you need wheelchair access, have serious back problems, are pregnant, or are bringing a child under 2. I would also skip it if rough water makes you miserable or if your main goal is world-class coral rather than a pleasant Thai island day.

Should you book it?

Yes, if you want good value and a practical way to reach Koh Chang’s nearby islands. The 3-island route is the safer all-round choice for a shorter day, while the 4-island trip earns its extra time if snorkeling is your priority.

Book with realistic expectations: this is a shared boat, not a private reef expedition. Bring cash, water shoes, sunscreen, snacks, and seasickness medicine if needed. Tell the crew you want underwater photos, and arrange a vegetarian meal at least a day ahead.

FAQ

How long does the 3-island tour last?

The 3-island tour runs from about 10:30 AM to 4 PM, or roughly five and a half hours, not counting the hotel pickup and drop-off period.

How long does the 4-island tour last?

The 4-island tour runs from about 9:30 AM to 4:30 PM. Hotel transfers begin earlier, usually between 8 AM and 8:50 AM.

Where does hotel pickup operate?

Pickup and drop-off are available on the west side of Koh Chang, up to White Sand Beach. Hotels on the north or east side are not covered, so you need to arrange transport to Bang Bao Pier.

Is lunch included?

Yes. The tour includes a basic chicken-based Thai lunch, fruit, water, and coffee. Request a vegetarian meal at least one day before departure.

Is the national park fee included?

The 4-island trip requires an additional fee of 200 baht per adult or 100 baht per child ages 5 to 9. The 3-island tour has no national park fee.

Are snorkeling gear and life jackets provided?

Yes. A snorkeling mask and life jacket are included. Fins are not included.

Can children and non-swimmers join?

Children under 2 cannot join. Non-swimmers can remain on the boat and the crew may assist them in the water, but the activity is not suitable for wheelchair users, pregnant women, or people with back problems.