HMS Stoic
Protected Area
Phuket Environmental Protected Area
Why dive here
With 173+ marine species recorded in the area - including blacktip reef sharks, eagle rays, giant moray eels, whale sharks and clownfish - HMS Stoic offers some of Similan Islands's richest wreck diving. Water ranges 29-31°C, warmest April, May, June.
The HMS Stoic, a British S-class submarine, went down in 1943, and she’s a proper dive. We’ve always found wreck dives in the Similans to be a bit hit or miss, but this one delivers. Dropping down, you hit the conning tower first. It’s pretty intact, still recognizable, even after all these years on the seabed. We love seeing the resident Diana's hogfish darting around the structure; they’re bold and always put on a show. Our favorite part is nosing along the deck. You’ll find schools of shorthead anchovies shimmering in the dimmer light, and if you’re patient, a few horseshoe crabs often scuttle along the sand nearby. The stern is more broken up, but that just creates more nooks for Jansen’s wrasse to hide. Currents can be present here, so pick your day, but the visibility is generally excellent. It’s a dive for those who appreciate history and enjoy the contrast of metal reclaiming marine life – a real classic.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
Nearest Dive Centres to HMS Stoic
Dive shops near HMS Stoic
The Phuket Best Friend - Phi Phi excursion and scuba diving
Thailand Aggressor
Devils Divers
HKT Kids Dive Club
Aquadive Thailand
Blue Cat Scuba Diving Center
Reviews for HMS Stoic
Conditions
Ocean conditions, forecast and tides for HMS Stoic
HMS Stoic Ocean Conditions
Monthly averages for HMS Stoic, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (8.1, 98.3) (6km away)
October Averages
Sea Temperature
30°C
85°F · Range: 28.7–30.4°C
Current Speed
5.1 cm/s
Direction: S (191.3°)
Salinity
29.75 PSU
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)
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