About this spot
Sail Rock, known locally as Hin Bai, rises dramatically from Thailand's seabed and delivers reliable intermediate-level diving for experienced recreational divers. The site spans depths from 5 to 40 meters, allowing you to explore both shallow reef sections and deeper drop-offs in a single dive. The rock formation itself creates natural channels and crevices where fish congregate, making it a consistent spot for observing marine life. You can dive Sail Rock throughout the year without seasonal closures, though local conditions may vary between monsoon and dry seasons. The site sits outside any marine protected area, meaning standard Thailand dive regulations apply. The rock's exposed position and depth range demand solid buoyancy control and comfort with open water navigation—this is not a beginner site. Divers typically encounter pelagic species in the blue water around the pinnacle, along with reef fish sheltering in crevices and on surrounding slopes. The underwater topography rewards thorough exploration; routes vary depending on current direction and your dive profile. Local dive operators familiar with Sail Rock can brief you on entry points, descent lines, and drift possibilities. Plan your dive carefully with your operator to match conditions and your experience level.
📖 Guide: Diving in Thailand: 73 Sites from Whale Sharks to Shallow Reefs
Dive types
Trip essentials
Everything you need before you pack — checklist, sun, logistics.
Trip checklist
- 🛂 Visa-free or visa-on-arrival
- 📜 C-card + dive insurance (DAN)
- 📔 Dive logbook
- 🧴 Reef-safe sunscreen SPF 50+
- 🔌 Plug type A/B/C · 220V adapter
- 💊 Seasickness meds + ear drops
- 📱 Offline maps + emergency contact
Quick facts
- 🌓 Moon First quarter · 48%
- GPS
› Sustainability disclosures
From your departure country
- Visa: Visa on arrival · 30 days max
- Flight: 11h · direct
- Jet-lag: 12h east · 8 days recovery
FAQ
›When is the best time to dive Sail Rock?
Sail Rock is diveable year-round. Conditions vary with Thailand's monsoon cycles; consult local operators for the calmest water and clearest visibility during your intended visit month.
›What is the difficulty level and who should dive here?
Sail Rock is intermediate. You need solid buoyancy control, comfortable navigation in open water, and experience with depth changes and currents. This is not suitable for newly certified divers.
›What marine life can I expect to see?
Pelagic fish patrol the blue water around the pinnacle, while reef fish shelter in cracks and crevices of the rock. Larger species occasionally patrol the site; specifics depend on season and current.
›Do I need permits to dive Sail Rock?
Sail Rock lies outside marine protected areas, so no special permits are required. Dive with a licensed local operator who knows current Thai dive regulations.
