Princess Bay

Best months: Jan–May

Protected Area

Mu Ko Similan

Why dive here

With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - Princess Bay offers some of Similan Islands's richest wreck diving. Water ranges 29-31°C, warmest April, May, June.

Best timeJan–May

WetsuitA 3mm shorty or thin full wetsuit

Marine lifeBlacktip Reef Sharks, Eagle Rays, Giant Moray Eels, Whale Sharks and Clownfish · 173+ species recorded

Water29-31°C · warmest April, May, June

CharacterWreck dive · max 19m

StandoutExceptional marine biodiversity

Princess Bay, affectionately known as the ‘Atlantis X’ or ‘Boonsoong Wreck’, is our kind of history lesson. This old tin dredger, sunk accidentally in the late 70s, now rests upright at 19 metres, completely transformed into an artificial reef. We love hovering above the massive dredge buckets, seeing them completely encrusted with soft corals and anemones. Look for scorpionfish camouflaged on the deck plates and clouds of fusiliers darting around the superstructure. The wreck is vast, easily explored in a single dive by beginners and experienced divers alike. Swim through gaping holes in the hull where the conveyor belts used to be, or poke your head into the old processing areas. The sheer scale is impressive, and the way marine life has reclaimed it is a testament to nature's resilience. Visibility here usually sits around 15-20 metres, making for relaxed viewing. It’s a gentle dive, making it perfect for those new to wreck diving, offering plenty to see without any tricky currents.

Typical Princess Bay Dive Profile

Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

Safety Notes

Depth of 19m - Advanced Open Water certification recommended.

Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

Always perform a 3-minute safety stop at 5m before surfacing.

Today06:1818:1611h 58m daylightGolden hour 17:48

Reviews for Princess Bay

Conditions

Ocean conditions, forecast and tides for Princess Bay

Princess Bay Ocean Conditions

Monthly averages for Princess Bay, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.1, 98.3) (6km away)