Board MV KOON1 in Khao Lak for a 2-day liveaboard that visits top Similan dive sites, includes a night dive at Nam Chai Bay, and a climb to Sail Rock viewpoint. Ideal for certified divers wanting clear-water reefs, dramatic granite islands, and efficient, comfortable liveaboard logistics.
Board MV KOON1 in Khao Lak for a 2-day liveaboard that visits top Similan dive sites, includes a night dive at Nam Chai Bay, and a climb to Sail Rock viewpoint. Ideal for certified divers wanting clear-water reefs, dramatic granite islands, and efficient, comfortable liveaboard logistics.
You step off the pier in Khao Lak before sunrise and the speedboat slices toward a horizon the color of polished aquamarine. Within an hour the island boulders loom — smooth, granite shapes rising from the sea — and the boat hums into anchor at a sheltered bay. Onboard MV KOON1, the engine’s steady whisper becomes background to the reef’s louder conversation: currents nudging you along coral gardens, tiny fish threading fan corals, and nightfall drawing out creatures that hide by day.
Verified experiences and guided adventures in the surrounding area.
Operated by Oh-Hoo · Khao Lak, Phang Nga Province
You step off the pier in Khao Lak before sunrise and the speedboat slices toward a horizon the color of polished aquamarine. Within an hour the island boulders loom — smooth, granite shapes rising from the sea — and the boat hums into anchor at a sheltered bay. Onboard MV KOON1, the engine’s steady whisper becomes background to the reef’s louder conversation: currents nudging you along coral gardens, tiny fish threading fan corals, and nightfall drawing out creatures that hide by day.
Mu Ko Similan National Park is a relatively young geological story of uplifted granite and relentless waves, producing the massive rounded rocks and clear, nutrient-poor waters that favor hard coral and compact reef formations. Local fishing villages and park rangers have shaped access and conservation; note that the park closes annually from mid-May to mid-October to protect spawning cycles and reef recovery.
Practically: this trip runs 2 days with multiple dives, including a night dive at Nam Chai Bay and a climb to Sail Rock viewpoint on Island 8. Participants need a minimum Open Water certification and should be at least 15 years old. Bring a dive computer, log your dive plan with the leader, and avoid flying for at least 18 hours after diving. Expect basic cabins aboard, BBQ dinners, Dim Sum mornings, and careful briefing on currents and entry/exit procedures.
Timing matters: visit in the dry season (November–April) for calm seas and visibility. Pack reef-safe sunscreen, motion-sickness remedies, and a compact waterproof camera—because the Similans don’t just invite you to look, they push you to explore.
moderate.
2 days (approx. 48 hours).
Moderate fitness recommended: able to climb ladders, manage gear, and perform multiple dives with surface swims.
Yes—participants must hold at least an Open Water certification to participate in the scuba dives; snorkeling is available for non-divers.
The park is closed annually from May 16 to October 14 for conservation and no tours operate during that period.
Standard guidance is to wait at least 18 hours after your last dive before flying to reduce decompression risk.
Night dives like the ones at Nam Chai Bay are led by experienced dive leaders with torches and briefing; prior night-dive experience is recommended.
The Similan Islands were designated a national park in 1982; their granite formations and marine habitats have long supported local fishing communities and growing eco-tourism.
The park enforces seasonal closures and limits visitor numbers to protect spawning cycles and fragile reef systems; guests are encouraged to use reef-safe products and follow dive briefing rules.
Oh-Hoo operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.




You step off the pier in Khao Lak before sunrise and the speedboat slices toward a horizon the color of polished aquamarine. Within an hour the island boulders loom — smooth, granite shapes rising from the sea — and the boat hums into anchor at a sheltered bay. Onboard MV KOON1, the engine’s steady whisper becomes background to the reef’s louder conversation: currents nudging you along coral gardens, tiny fish threading fan corals, and nightfall drawing out creatures that hide by day.
You step off the pier in Khao Lak before sunrise and the speedboat slices toward a horizon the color of polished aquamarine. Within an hour the island boulders loom — smooth, granite shapes rising from the sea — and the boat hums into anchor at a sheltered bay. Onboard MV KOON1, the engine’s steady whisper becomes background to the reef’s louder conversation: currents nudging you along coral gardens, tiny fish threading fan corals, and nightfall drawing out creatures that hide by day.
Mu Ko Similan National Park is a relatively young geological story of uplifted granite and relentless waves, producing the massive rounded rocks and clear, nutrient-poor waters that favor hard coral and compact reef formations. Local fishing villages and park rangers have shaped access and conservation; note that the park closes annually from mid-May to mid-October to protect spawning cycles and reef recovery.
Practically: this trip runs 2 days with multiple dives, including a night dive at Nam Chai Bay and a climb to Sail Rock viewpoint on Island 8. Participants need a minimum Open Water certification and should be at least 15 years old. Bring a dive computer, log your dive plan with the leader, and avoid flying for at least 18 hours after diving. Expect basic cabins aboard, BBQ dinners, Dim Sum mornings, and careful briefing on currents and entry/exit procedures.
Timing matters: visit in the dry season (November–April) for calm seas and visibility. Pack reef-safe sunscreen, motion-sickness remedies, and a compact waterproof camera—because the Similans don’t just invite you to look, they push you to explore.