Reviewed · KO CHANG TOURS
Scuba Diving Day Trip at Koh Chang – 2 Dives
The big choice here is underwater: explore the towering HTMS Chang wreck, Thailand’s largest shipwreck, or trade steel and depth for the calm coral gardens of Koh Rang National Park. The wreck suits certified divers who want a memorable focal point, while Koh Rang is the gentler pick for colorful reefs and shallower water.
I like the small maximum group of four, which gives guides such as Oscar, Steve, Max, or Chang room to help with equipment and keep the pace comfortable. I also like the practical package: equipment, lunch, drinks, snacks, and hotel pickup are all covered, so you can focus on the sea rather than the day’s logistics.
The main consideration is certification. You must show proof of qualification, and the HTMS Chang can be a more demanding choice, with one account noting that an advanced open-water certificate is advisable for the wreck’s deeper sections. National park fees are extra, and the $130.39 price is not the final all-in cost.
Key points to know before booking

- HTMS Chang is the headline site: Thailand’s largest shipwreck offers a striking underwater structure and marine life, but some sections reach about 18 meters.
- Koh Rang is the calmer alternative: Expect shallow reefs, protected waters, coral, tropical fish, and several reef or snorkeling stops.
- The group is capped at four: That is unusually intimate for a full-day boat trip and helps with equipment checks and personal attention.
- Oscar and Steve are useful names to know: Oscar is described as the boatmaster, while Steve has helped returning scuba guests refresh their skills and regain confidence.
- Lunch and refreshments are included: You get a buffet lunch, drinks, and light snacks during the long day on the water.
- Plan for extra fees: National park charges are not included, and an additional underwater session may cost 1,000 baht.
Choosing between the HTMS Chang wreck and Koh Rang

This trip is built around two different sides of Koh Chang’s underwater world. The HTMS Chang gives you a strong sense of place and scale. Koh Rang gives you easier scenery and a more relaxed rhythm.
The wreck is the more dramatic option. The ship’s large structure creates plenty to look at, and marine life has made the steel home. It is suitable for certified divers of different levels according to the tour information, but that does not mean every part will feel equally easy. One account described the wreck at around 18 meters and suggested an advanced open-water qualification for that outing.
I would choose the wreck if you are comfortable with your certification, have reasonable recent experience, and want one memorable centerpiece for the day. You should also be ready for conditions and depth to affect the plan. Your guide may adjust the route or keep you above the wreck rather than taking you into every section.
Koh Rang National Park is the better match if you prefer calm water and shallow reefs. The park protects a group of about 40 islands, and the planned stops can include several reef and snorkeling locations rather than one large attraction. That variety matters. You get more chances to see coral formations and tropical fish without making the whole day depend on a single wreck site.
The marine park also suits families and less experienced certified scuba guests, though everyone still needs the required certification. The water is described as calm, and the route is intended to feel relaxed. If your last underwater session was some time ago, Koh Rang may be the kinder way to get comfortable again.
You may not control the exact site on the day. The operation chooses among the area’s best locations, and conditions can shape the route. That flexibility is useful, but it means you should book for a good day on the water rather than promise yourself one exact underwater view.
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What the 8-hour day looks like

The day begins at 8:00 am at BB Divers, the PADI 5 Star Dive Center at 16/2 Moo 1, Koh Chang Tai. Hotel pickup and drop-off are included, which removes one of the less pleasant parts of an early morning on Koh Chang. Confirm your pickup details when booking, especially if your hotel is outside the usual service area.
At the center, you should expect the staff to confirm your certification and help organize equipment before departure. All necessary equipment is included. The small group size means the guide can spend more time checking fit, explaining the plan, and helping anyone who needs a little extra support.
The boat then heads toward either the wreck or the national park. The full outing lasts about eight hours, so this is not a quick morning activity. Bring enough patience for a boat day, along with anything personal you need for comfort, since the package already supplies the main practical items.
At the main site, the day includes two planned scuba sessions. The wreck itinerary is described as the HTMS Chang followed by two additional reef sessions, while the Koh Rang route can include three different scuba and snorkeling stops. The exact wording suggests that the number of water activities can vary by route, so clarify the schedule if having exactly two sessions is important to you.
Between water sessions, you get a buffet lunch on board. Drinks and light refreshments are included as well. This matters more than it sounds. A full day at sea can feel tiring when food and water are uncertain, so having lunch arranged keeps the outing simple and gives you time to rest before returning to the water.
The boat returns to the BB Divers meeting point at the end of the day. Hotel drop-off is included, making the return easier after several hours in the sun and water.
Why the small group makes a difference
A maximum of four participants is one of the strongest parts of this experience. You are not being folded into a large crowd where every equipment question takes time and every underwater decision must suit a dozen people.
With a group this small, a guide can pay closer attention to comfort, buoyancy, and pace. That is especially helpful if you are certified but have not been underwater recently. Steve is specifically noted for helping one guest refresh the basics before the session, and family groups have appreciated his patient support with less experienced members.
The small format also makes the day feel less rushed. You can ask about the site, equipment, or route without competing for attention. It does not guarantee a private trip, since the experience can include up to four people, but it comes close to the personal feel many scuba guests want.
There is a tradeoff. A four-person maximum does not mean every booking is private unless you arrange that separately. One private two-session outing was available in the experience history, but you should confirm the private format and any extra cost before assuming it is included.
Meeting guides such as Oscar, Steve, Max, and Chang
The staff names connected with this operation are useful because they give you a sense of the different roles involved. Oscar is described as the boatmaster and has led routes around the national park and the military wreck. If he is running your boat, expect him to be closely involved in the day’s timing and site choices.
Steve is the name I would remember if you are returning to scuba after a break. He has helped guests refresh their skills and has worked with families that included inexperienced members. That kind of calm, hands-on support can make the difference between spending the morning tense and enjoying the underwater world.
Max has guided an HTMS Chang outing, and Chang has led a private two-session trip. The staff list is not a promise that you will receive one particular guide. It simply tells you that the center has several guides with experience in both the wreck and reef routes.
The strongest praise for the operation centers on staff help, organization, and equipment. That is exactly what you want from a scuba day. Fancy scenery cannot rescue a poorly fitted mask or a confusing boat routine, while a careful crew can make an ordinary site feel much better.
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Equipment, safety, and comfort underwater

The package includes the necessary equipment, and the available feedback describes the gear as well maintained. You should still give yourself time to check the fit of your mask, fins, buoyancy equipment, and other kit before leaving the center.
A well-run day depends on small details. Ask the guide to explain anything you do not understand, especially if you have not used rental equipment recently. The operation requires proof of scuba certification from every participant, so bring the appropriate certification evidence rather than assuming your word will be enough.
Most people with the required qualification can take part, but your own comfort level matters. Certification is a minimum requirement, not a promise that the wreck will feel easy. If you have limited recent experience, tell the staff when you book and consider asking for a refresher with the guide.
The HTMS Chang deserves extra care. A large wreck can create depth, navigation, and visibility questions that do not arise in the same way on a shallow reef. One account described staying above the wreck at 18 meters and recommended advanced open-water training for that particular outing. Treat that as useful caution, not as a universal rule for every route.
Koh Rang gives you a more forgiving setting, with calm water and shallower reef areas. You still need to follow the guide’s instructions and respect the marine park, but the site choice may feel more comfortable if you are rebuilding confidence.
Lunch, drinks, and the practical value of the package
At $130.39 per person, this is not the cheapest way to spend a day in Koh Chang. It is also more than the price of a short local activity. The value depends on how much of the included package you would otherwise need to arrange separately.
You receive hotel transfers, equipment, a professional guide, all listed activities, a buffet lunch, drinks, and light refreshments. A full-day boat trip with two main scuba sessions can quickly become expensive once you add transport, rental gear, food, and bottled drinks on your own.
The small group improves the value further. You are paying for a guided outing with a maximum of four people, rather than only paying for access to a boat. If personal attention matters to you, the price is easier to justify.
There are two costs to keep in mind. National park fees are not included, and an additional session may be available for 1,000 baht. Ask about both before departure so the final price does not surprise you.
The included buffet lunch also helps with planning. You do not need to carry a full meal or find food between sessions. Free drinks and snacks are modest details, but they are welcome during an eight-hour day in the tropical sun.
Who will get the most from this trip
This experience suits certified scuba guests who want a full day rather than a brief introductory session. It works especially well for someone choosing between a wreck and reef route, since both are available through the same operation.
Choose it if you value:
- A very small group
- Hotel pickup and return
- Rental equipment included
- A guide-led visit to a major wreck or protected reef area
- Lunch and drinks arranged on the boat
- Help refreshing skills after time away from scuba
The trip can also work for families with mixed confidence levels, provided every participant meets the certification requirement. Steve’s reported support for a family group shows the value of having a patient guide when some members need more help with equipment and procedures.
I would be more cautious about booking the wreck if you are newly certified, have not been underwater for a long time, or feel uneasy about depth. In that case, ask for Koh Rang or request a refresher before choosing the more demanding route.
This is not the right activity if you want a casual swim with no qualification requirement. It is a certified scuba outing, and you need evidence of certification at the center.
Booking, cancellation, and small details to settle

Confirmation is provided when you book, and the experience is generally booked about eight days ahead. That does not mean you must reserve exactly eight days early, but it is a useful signal for planning busy periods on Koh Chang.
You can cancel for a full refund up to 24 hours before the local start time. Changes or cancellations inside that window are not accepted for a refund. Keep the local time rule in mind if you are arranging several activities close together.
Tell BB Divers about dietary requirements when booking. Lunch is included, but special food needs must be communicated ahead of time rather than handled at the last minute.
The tour uses a mobile ticket and begins at BB Divers at 8:00 am. The activity ends back at the meeting point, with hotel transportation included in the package. If you are staying somewhere unusual, confirm the pickup arrangement before the morning of the trip.
Should you book the Koh Chang scuba day?
I would book this if you are certified, want either the HTMS Chang or Koh Rang, and value a small group with the day’s main logistics handled. The combination of four-person maximum, included equipment, lunch, refreshments, and hotel transport gives the $130.39 price solid value for a full day.
Pick Koh Rang if you want calmer, shallower reef scenery or are returning after time away. Pick the HTMS Chang if the wreck is your main reason for coming and you are comfortable with the required depth and conditions.
Before paying, confirm the chosen route, national park fee, exact number of water sessions, and whether a refresher is appropriate for you. With those points settled, this is a well-organized option for seeing Koh Chang below the surface without the usual hassle of arranging gear, food, transport, and a boat separately.
FAQ
What is the price of the Koh Chang scuba trip?
The listed price is $130.39 per person. National park fees are not included, so ask for the current amount before the trip.
How long does the experience last?
The outing lasts about eight hours, beginning at 8:00 am and ending back at the BB Divers meeting point.
Where does the trip start?
It starts at BB Divers, PADI 5 Star Dive Center Koh Chang, at 16/2 Moo 1, Koh Chang Tai, Ko Chang, Trat 23170, Thailand.
Is hotel pickup included?
Yes. Hotel pickup and drop-off are included in the package.
Do I need scuba certification?
Yes. Evidence of scuba certification is required from all participants taking part in the certified scuba activity.
How many people can join the trip?
The maximum group size is four participants.
What sites can the trip visit?
The trip can visit the HTMS Chang wreck or Koh Rang National Park. The final site depends on the day’s route and conditions.
Is food and drink included?
Yes. The package includes a buffet lunch, drinks, beverages, and light refreshments or snacks. Dietary requirements should be provided when booking.
Can I cancel for a refund?
You can cancel at least 24 hours before the experience’s local start time for a full refund. Cancellations or changes made less than 24 hours before the start are not accepted for a refund.
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