Hin Luk Bat Dive Site, Koh Chang: Routes, Depth, Season

Featured image: DolphinNews, CC BY-SA 4.0, via Wikimedia Commons.

Hin Luk Bat at a glance

Hin Luk Bat is a boat dive. Three rock spires rise from one rounded formation, and a plateau at about 5 m (16 ft) links them. Published maximum depths disagree, so we treat depth as a range. PADI's dive guide lists 25 m (82 ft), with most of the dive spent between 5 and 16 m (16 to 52 ft). Another local operator describes deeper sections of about 21 to 22 m (69 to 72 ft). A third listing claims 30 m (98 ft) but flags it as unchecked. You will also see the site spelled Hin Luk Bath, including on PADI's dive site listing. Ask your operator which depth their planned route reaches.

What you will see at Hin Luk Bat

The structure is the first draw. A triangular rock breaks the surface, a second rock tops out about 1 m (3 ft) below the waterline, and a third sits just under the surface. Canyons and small tunnels run between them. Descending the mooring line on the south side puts you at about 12 m (39 ft). That is where the sea anemone fields spread out, and they are the site's signature. Snappers and chevron barracuda school overhead. Look closer for nudibranchs and pipefish among the hard coral. PADI's listing adds morays, stingrays, fusiliers, groupers, and Christmas tree worms. A local dive center says the vase corals here grow in numbers and sizes you will not find at Koh Chang's other sites. We would carry a camera and a torch for the tunnels and macro life.

Dive routes by experience level

Hin Luk Bat is really several dives in one place. The shallow plateau at about 5 m (16 ft) is calm and bright, so it suits newly certified divers and try-dive guests. The main formation at around 12 m (39 ft) fits most certified divers. Optional swim-throughs add interest, but only when your control and the day's visibility allow. Advanced divers can add the deep reef at about 25 m (82 ft). Reaching it means swimming about 50 m (164 ft) southwest over sand. That is roughly 100 m (328 ft) of extra travel there and back, so watch your gas. Operators list Open Water as the minimum for the standard dive. At least one published guide rates the full site Intermediate. Both can be true, because the route you choose sets the difficulty. PADI certification levels give the baseline definitions.

• Mistake: booking the deep reef without Advanced certification.
• Mistake: assuming snorkeling is easy because the plateau is shallow.
• Mistake: diving outside November to April without asking about conditions.

Can you snorkel Hin Luk Bat?

Possibly, and we would be honest about the limits. The plateau sits at about 5 m (16 ft), and one rock tops out about 1 m (3 ft) below the surface. Boat access is the real constraint, because there is no shore entry. Not every Bang Bao operator runs snorkelers to the site. Ask whether a guide is in the water and whether currents or surge are expected that day. Strong swimmers with a flotation vest are the best fit. If the answer is no, our guide to snorkeling around Koh Chang lists alternatives. For other islands, try snorkel spots off Koh Mak or Koh Wai's shallow reefs. Koh Kood's snorkeling reefs are another option.

Best time to visit Hin Luk Bat and conditions

Published data points to November to April as the best window. Operators report visibility of roughly 10 to 25 m (33 to 82 ft), mild current, and moderate surge. Water is listed at about 27 to 30 °C (81 to 86 °F) in the warm months and 25 to 28 °C (77 to 82 °F) in the cooler ones. Treat these as planning ranges, since the source says its figures are unchecked. Surge matters on the shallow plateau, where fragile coral sits close to the rocks. Outside the window, ask your operator about the sea state before paying a deposit. Our month-by-month conditions guide covers the full calendar.

Getting there and choosing an operator

Boats leave from Bang Bao pier on Koh Chang's southwest. Dive centers in the area sit roughly 1.6 to 1.9 km from the site, per a mapping listing. Local Divers, BB Divers, Blue Spirit Divers, The Scuba Squad, Thai Ocean Academy, and Koh Chang Divers all appear on that list. We name them as locations, not recommendations, and operator lists change, so check who is running trips now. Boat time and rates vary by operator. Cost usually depends on group size, number of dives, and gear rental. Ask each shop for a current quote. A typical trip day follows this order, with times set by the operator.

• Check in at the operator's Bang Bao office.
• Transfer by boat to the site.
• Dive Hin Luk Bat, usually first or second.
• Surface interval on board.
• Second dive at another site, if booked.
• Return to Bang Bao pier.

Questions to ask before you book

Four or five answers shape your day more than the brand name does. Group size changes how close you can stay to the guide. The planned route tells you whether the deep reef is on offer. Mooring use affects entry and exit. Gear matters for the tunnels and for night dives, which PADI lists as good here.

• How many divers per guide?
• Which route will you run: plateau, main formation, or deep reef?
• Do you use the mooring line on the south side?
• Is a second site included, and which one?
• What gear is included, and do I need a torch or surface marker buoy?

Combining Hin Luk Bat with other Koh Chang sites

Hin Luk Bat is a short boat ride from Bang Bao and close to the Chang wreck, per a local dive center. That makes a two-site day natural. We would pair the reef first, then the wreck, since the wreck sits deeper. Our guide to the Chang wreck dive explains what that dive involves. For a wider choice, see the full list of Koh Chang Dive Sites: Wrecks, Reefs & Koh Rang. Operators say exact plans depend on the boat's route and the day's conditions.

Responsible diving at Hin Luk Bat

Hard coral covers the whole formation, and the anemone fields near 12 m (39 ft) are delicate. Keep neutral buoyancy, hold your camera clear of the anemones, and touch nothing. Fire coral and sea urchins sit in the shallows, so mind your hands and knees on the plateau. Ghost nets are a real hazard here. A local dive center reports that a net settled over the reef and trapped a resident hawksbill turtle. Report loose netting to your guide so the operator can arrange a safe removal. Never try to cut it yourself at depth.

Hin Luk Bat vs Koh Rang and Koh Kood

Hin Luk Bat is the practical pick if you are based at Bang Bao. It is a short boat ride, with a mix of shallow and deep routes. Koh Rang is a separate destination with its own character, so read the Koh Rang reef guide before choosing. Koh Kood is farther away. Its dive centers sit roughly 45 km from this site on the mapping list. See diving off Koh Kood if you want a multi-day trip. We would book Hin Luk Bat for a first Koh Chang boat day and save the longer trips for later days.