HTMS Phratong Wreck - Similan Islands

The HTMS Phratong wreck, resting just off Koh Phra Thong, is one of those dives that feels like a proper discovery, even if she’s been down there since 1989. We love how the wreck really draws in the bigger pelagics, especially around the bow where those massive schools of fusiliers swirl. You’ll often spot trevally hunting amongst them. Dropping down, the ship’s structure is still largely intact, offering some interesting swim-throughs if you’re comfortable with overhead environments. The wheelhouse is usually our first stop. Keep an eye out for ghost pipefish camouflaged along the mast and the various anemones that have taken root. It’s not an especially deep wreck, which means plenty of bottom time to explore the nooks and crannies where groupers hide. Our favourite memory here is always the sound of cracking coral from parrotfish, a surprisingly loud soundtrack to a calm dive. Go early in the morning to beat the crowds; the visibility tends to be best then too.

Location
Similan Islands, Thailand, Southeast Asia
Coordinates
9.113955, 98.173090
Type
wreck

Marine Protected Area: Muko Surin

Best Time to Dive in Similan Islands

The warmest water temperatures in Similan Islands occur in May, averaging 30.8°C. The coolest conditions are in January at 28.6°C.

Monthly Water Temperatures

  • January: 28.6°C
  • February: 29.0°C
  • March: 29.6°C
  • April: 30.6°C
  • May: 30.8°C
  • June: 29.9°C
  • July: 29.6°C
  • August: 29.3°C
  • September: 29.0°C
  • October: 29.0°C
  • November: 29.2°C
  • December: 28.7°C

Nearby Dive Sites in Similan Islands

Nearest Dive Centres to HTMS Phratong Wreck

Marine Life in Similan Islands

Home to 183 recorded species including 127 reef fish, 38 hard corals, 9 seagrass & algae, 4 sharks & rays, 2 other, 1 octopus & squid.

Notable Species

Recommended Packing List for HTMS Phratong Wreck

Based on average water temperature of 29.4°C, currents 7 cm/s.

  • Shorty or Rashguard - warm 29°C water needs minimal exposure protection
  • Mask - essential for every dive
  • Fins
  • BCD - buoyancy compensator
  • Regulator - your most safety-critical piece of gear
  • Dive Computer - tracks depth, time, and NDL
  • Surface Marker Buoy (SMB) - essential for boat pickups
  • Dive Torch - useful for crevices and colour at depth
  • Underwater Camera - capture your diving memories