Reviewed · SCUBA DIVING
Scuba Diving Day Trip at Koh Chang – 2 Dives
The main draw here is choice: you may spend the morning around the towering HTMS Chang wreck, or head for the gentler coral sites of Koh Rang National Park. The wreck is Thailand’s largest, while Koh Rang offers shallow water, calm conditions, and colorful fish.
I like the small maximum group of four, which gives your guide room to help with gear and check your comfort. I also like the practical package: hotel pickup, equipment, snacks, drinks, and a buffet lunch are all included. The main consideration is that the advertised trip centers on two underwater sessions, while some itineraries and past outings include extra stops or a third session for an additional 1,000 baht.
Key points at a glance

- Choose between the HTMS Chang wreck and Koh Rang National Park, depending on conditions and the day’s plan.
- Expect a small group of no more than four people, with personal help from the crew.
- Guides including Oscar, Steve, Max, and Chang have helped participants with equipment, refreshers, and site supervision.
- The day lasts about eight hours, beginning at BB Divers at 8:00 am and ending back at the same meeting point.
- Lunch, drinks, light refreshments, equipment, and hotel transfers are included, while national park fees are extra.
- You must show proof of scuba certification, and you can request a refresher if you have not been underwater for a while.
Two very different underwater days around Koh Chang

This is not a sightseeing boat ride with a quick swim added on. It is a full scuba outing for certified participants, built around two main underwater sessions and a long day on the water.
The choice of site gives the trip its character. The HTMS Chang is the dramatic option, with a large military wreck that has become a home for sea life. Koh Rang National Park is the calmer choice, with shallow coral areas, protected water, and several possible stops for scuba and snorkeling.
The exact site depends on the day’s schedule and local conditions. That flexibility is useful, since it lets the crew direct you toward the better option instead of forcing every group into one fixed route.
The trip begins at BB Divers, a PADI 5 Star Dive Center at 16/2 Moo 1, Koh Chang Tai. The stated start time is 8:00 am, and the entire outing takes about eight hours. Hotel pickup and drop-off are included, so you do not need to arrange a separate taxi if your accommodation is covered by the pickup service.
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The HTMS Chang wreck: the exciting choice
The HTMS Chang is described as the largest shipwreck in Thailand, and that scale is the reason to choose this route. A large wreck gives you something substantial to explore, rather than a loose collection of reef formations.
The wreck is suitable for scuba participants of all levels according to the trip details, but you still need to meet the certification requirement. One past outing reached about 18 meters above the wreck, and the guide suggested an Advanced Open Water certificate for that particular experience. That is useful context: the general trip may suit different experience levels, but a specific wreck route or depth can call for stronger qualifications.
You will see the ship’s structure rising through the water, with marine life using it as shelter. The wreck itself is the star, but the surrounding reef sessions add variety. Instead of spending the entire day looking at metal, you may also visit coral areas with tropical fish and smaller creatures such as nudibranchs.
For someone returning to scuba after a break, the wreck can feel like a serious first outing. Steve has helped rusty participants refresh basic skills before entering the water, and that sort of support matters. You should still be honest about your recent experience when booking and at the morning briefing.
One point to clarify at the center is the day’s exact number of sessions. The product is sold as a two-session trip, while the wreck description refers to two additional reef sessions and some past outings included three total sessions. Ask what is planned for your date, and ask about the 1,000 baht fee if you want an extra session.
Koh Rang National Park: the relaxed route

Koh Rang National Park offers a different kind of day. This protected marine area includes 40 islands, and the advertised route focuses on calm water and shallow reefs rather than the size and drama of a shipwreck.
That makes Koh Rang a good fit if you want time to look closely at coral, fish, and small sea creatures. The trip description mentions brilliant nudibranchs and the possibility of whale sharks. Those sightings are not guaranteed, but they show the range of marine life you might encounter.
The Koh Rang plan includes three different scuba or snorkeling stops. This can make the day feel varied, since you are not tied to one underwater site. It also gives a mixed group more flexibility if some people prefer snorkeling at one stop and scuba at another.
The tradeoff is that coral gardens may feel less dramatic than the HTMS Chang. If you have come specifically to explore a large wreck, Koh Rang may seem like the quieter choice. If you prefer shallow water, calmer conditions, and a slower look at reef life, it may be the better match.
The national park fee is not included in the tour price. Set aside extra money for that charge, since it is the only clearly listed additional cost besides optional extra scuba sessions.
What the eight-hour schedule feels like
The morning starts at 8:00 am at BB Divers, unless you use the included hotel pickup. You will need to arrive ready to show proof of certification and discuss any dietary needs before the boat heads out.
A professional guide and boat crew handle the day’s instruction and site arrangements. The crew members named in past outings include Oscar, Steve, Max, and Chang. Oscar has served as boatmaster, while Steve has helped participants regain confidence after time away from scuba. Max guided a wreck outing, and Chang led a private two-session trip.
The boat ride takes you toward either the wreck or the national park. The supplied information does not give a fixed travel time, so you should think of the eight-hour duration as a full day rather than two quick sessions with a short transfer.
Between underwater sessions, lunch is served on board. A buffet is included, along with drinks and light refreshments. That is a real advantage on a marine trip, since you do not need to pack a full meal or buy food at sea. Bring any special snacks you rely on, though, and state dietary requirements when booking.
The day finishes back at the meeting point. If hotel transfer is arranged, drop-off is included as well.
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A small group changes the experience

The maximum group size is four people. That is one of the strongest practical features of this outing.
A small group gives the guide more time to help with fins, mask, tank, and other equipment. It also makes it easier to ask questions without holding up a large boatload of people. If you are nervous, recently certified, or returning after several years away, that extra attention can make the morning feel less rushed.
The guides have also been praised for being helpful and calm. Steve assisted one participant with a refresher before the underwater sessions. Family members with limited experience received help with equipment and preparation during an outing led by Steve. Those details suggest that the crew is used to supporting mixed ability levels, not only highly practiced scuba participants.
Still, small group size does not remove the need for personal responsibility. You must hold the required certification, listen carefully to the briefing, and tell the crew if a depth or route makes you uncomfortable. The HTMS Chang may be suitable for many certified people, but particular profiles can require Advanced Open Water certification.
Equipment, food, and service
All necessary scuba equipment is included. That saves you from renting items separately and makes the booking easier, especially if you are traveling around Thailand with limited luggage.
Equipment condition matters more than the word included. Past feedback specifically praised the gear as well maintained, which is encouraging. You should still check your mask fit, regulator, fins, and buoyancy equipment before leaving the center. A small adjustment on land is much easier than an uncomfortable mask underwater.
Food is another strong part of the package. You receive a buffet lunch, free drinks, and light snacks. The food is served during the boat day, so you have a proper break between sessions rather than needing to return to shore.
The crew’s service is described as organized and friendly, with special praise for Oscar as boatmaster and for Steve’s patient help. That matters because a good day depends on many small tasks: loading equipment, explaining the route, timing entries, preparing lunch, and keeping the boat moving on schedule.
The information does not promise a private boat for every booking. It does state a maximum of four participants, which is the useful figure when judging how personal the service should feel.
Is the $130.39 price fair?
At $130.39 per person, this is not the cheapest way to spend a day around Koh Chang. The price makes more sense when you count what it includes.
You receive hotel pickup and return, all activities, equipment, a professional guide, lunch, drinks, and snacks. You also get a full eight-hour outing rather than a short shore-based session. For someone who would otherwise need to rent equipment, arrange transport, buy lunch, and book separate boat access, the package is reasonably strong value.
The national park fee is extra, so include that in your budget. An optional extra session costs 1,000 baht. You should also confirm the exact plan if the difference between two and three underwater sessions affects your decision.
The small group adds value that is harder to price. Four people allow more direct help than a large operation can usually provide. If your priority is safe organization and personal attention, the cost is easier to justify. If you only want a brief introduction to scuba, this full-day format may be more than you need.
The trip is generally booked about eight days ahead. That does not guarantee availability, but it suggests you should not leave this until the last morning of your Koh Chang stay.
Who should book this Koh Chang outing?

This is best for certified scuba participants who want a complete day on the water and appreciate having most practical details handled for them.
Choose it if you want:
- A wreck experience around the HTMS Chang
- Calm reef sites at Koh Rang National Park
- A small group with a maximum of four people
- Help from a professional guide and boat crew
- Equipment, lunch, drinks, snacks, and hotel transfers included
- A refresher before entering the water if you have been away from scuba for a while
It can also suit families or friends with different experience levels, since guides have helped less experienced members feel more comfortable. The group should still discuss certification and the planned site before setting out.
This is not the right choice if you are not certified, since proof of certification is required. It may also disappoint you if you expect a guaranteed whale shark sighting or a fixed wreck route. Marine conditions and the day’s plan determine which sites you visit.
Free cancellation is available if you cancel at least 24 hours before the start time. Changes or cancellations inside that window are not accepted for a refund.
Final call: book it for service and site choice
I would book this trip if you are certified, want a full day around Koh Chang, and value a small group more than the lowest possible price.
The strongest reasons are the choice between the HTMS Chang and Koh Rang, the included equipment and meals, and the amount of guide support possible with only four participants. Oscar, Steve, Max, and Chang are names to ask about when you arrive, especially if you want a particular kind of help or site experience.
Before paying, confirm three things: the national park fee, the exact number of underwater sessions, and whether the planned wreck profile suits your certification. If those details work for you, this is a well-organized way to see Koh Chang below the surface without piecing together transport, gear, food, and boat arrangements yourself.
FAQ
Is scuba certification required?
Yes. You must provide evidence of scuba certification to take part in the certified underwater sessions.
Where does the activity start?
It starts at BB Divers, PADI 5 Star Dive Center Koh Chang, at 16/2 Moo 1, Tambon Koh Chang Tai, Amphoe Ko Chang, Trat 23170, Thailand.
What time does the trip begin?
The stated start time is 8:00 am.
How long does the activity last?
The full outing lasts approximately eight hours and ends back at the meeting point.
Is hotel pickup included?
Yes. Hotel pickup and drop-off are included.
Which underwater sites can I visit?
The trip may visit the HTMS Chang wreck or Koh Rang National Park. The final site plan depends on the day’s operation.
Is lunch included?
Yes. A buffet lunch, drinks, and light refreshments are included.
Are national park fees included?
No. National park fees are not included in the advertised price.
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