Sankisan Maru
Why dive here
With 195+ marine species recorded in the area - including barracuda, blacktip reef sharks, eagle rays, grey reef sharks and whitetip reef sharks - Sankisan Maru offers some of Chuuk (Truk) Lagoon's richest wreck diving. Water ranges 29-30°C, warmest August, October, November.
The Sankisan Maru is one of those wrecks that just grabs you. We love dropping down onto the stern, watching those huge Japanese Type 96 aircraft engines come into view, almost perfectly preserved in the cargo holds. There’s something eerie about seeing them lined up, still ready for use, centuries of work just frozen in time. The bow section is our favourite for penetration. You’re weaving through cases of ammunition, stacks of rifle barrels, and all sorts of general cargo. Light filters in from the bomb damage, illuminating schools of fusiliers that hang in the shadows, so thick you can almost swim through them. Keep an eye out for the resident moray eels peeking from the darker corners. While it's not a deep dive, the tight squeezes and potential for silt-outs mean it's best for divers comfortable with overhead environments. Our pick for timing? Mid-morning, when the sun angle hits just right, turning the cargo holds into a surreal theatre of light and shadow. It's a truly evocative dive, a real window into a moment in history.
Typical Sankisan Maru Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.
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Conditions
Ocean conditions, forecast and tides for Sankisan Maru
Sankisan Maru Ocean Conditions
Monthly averages for Sankisan Maru, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (7.41, 151.84) (2km away)
October Averages
Sea Temperature
30°C
86°F · Range: 29.3–31.4°C
Air Temperature
28°C
82°F
Wind Speed
6.4 m/s
12.4 knots
Atmospheric Pressure
1009.4 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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