Shinkoku 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 - Shinkoku Maru offers some of Chuuk (Truk) Lagoon's richest reef diving. Water ranges 29-30°C, warmest August, October, November.
The *Shinkoku Maru* is one of those wrecks that just hits different. An oil tanker sunk in 1944, she’s coated in some of the most vibrant stony and staghorn corals you’ll find in the lagoon. We love dropping onto the bow, seeing the giant gun still in place, then drifting along her superstructure. You can spend a whole dive just exploring the bridge, the engine room, and the holds. Inside, look for the operating theatre, with surgical instruments still visible if you know where to shine a light. Out on the deck, the schools of unicornfish and parrotfish are thick, and the resident groupers eye you with casual indifference. We've often spotted blacktip reef sharks cruising the deeper sections around 30m. It’s an intermediate dive, with depths down to 40m, but plenty to see shallower, making it a good second or third dive of the day. The sheer scale and the incredible coral growth on this wreck are what make it truly special.
Typical Shinkoku Maru Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Always perform a 3-minute safety stop at 5m before surfacing.
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Conditions
Ocean conditions, forecast and tides for Shinkoku Maru
Shinkoku Maru Ocean Conditions
Monthly averages for Shinkoku 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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