Choose between the towering HTMS Chang wreck and the calm coral slopes of Koh Rang National Park on this full-day, two-dive outing from Koh Chang. Ideal for certified divers who want big-structure wrecks or relaxed reef dives in protected waters.
More ways to explore the area's outdoor wonders
You step off the longtail onto a low-slung dive boat and the sea opens—warm, glassy, the horizon a hard line where sky dares the water. Morning light picks out the outlines of Koh Chang’s limestone ridges while the boat engines tick down and crew prepare tanks. Whether you’re heading for the HTMS Chang wreck or the coral gardens of Koh Rang National Park, the ocean organizes itself around you: currents that coax you along, bommies that hide small, secret lives.
Difficulty
moderate
Duration
8 hours
Fitness Level
Comfortable swimming skills and the ability to manage moderate currents are recommended; basic scuba fitness for repeated dives.
Wildlife
History
HTMS Chang is one of the most notable wrecks in Thai waters and has become a locally famous dive landmark alongside the protected reefs of Koh Rang National Park.
Conservation
Koh Rang is part of a marine national park with regulations to protect coral and fish; divers are asked to follow no-touch rules and use reef-safe products to minimize impact.
Reserve your spot on the Scuba Diving Day Trip at Koh Chang – 2 Dives today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Bring your certification card
Operators require proof of Open Water certification and recent dive experience; keep your card and logbook handy at check-in.
Check the sea state
Monsoon season affects visibility and swell—ask the operator about conditions the morning of your trip and consider scheduling dives mid-day for calmer water.
Use reef-safe sunscreen
Apply biodegradable sunscreen before the dive to reduce chemical impact on corals and marine life.
Plan for surface intervals
Bring a small dry bag with snacks, water, and a light layer for wind; surface intervals are on deck and can be breezy.
Dive certification card & logbook
Required for check-in and useful to log the two dives.
Mask, snorkel, fins (personal fit)
A well-fitting mask and fins improve comfort and control underwater.
3mm wetsuit
Light thermal protection for tropical waters, good for long surface intervals.
Reef-safe sunscreen
Protects your skin and the coral ecosystem during surface time.
summer