12-40m
    Intermediate
    Chuuk (Truk) Lagoon, Micronesia

    Shinkoku Maru

    Best months: Jan–May

    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.

    Best timeJan–May
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Blacktip Reef Sharks, Eagle Rays, Grey Reef Sharks and Whitetip Reef Sharks · 195+ species recorded
    Water29-30°C · warmest August, October, November
    CharacterReef dive · max 12-40m
    StandoutExceptional marine biodiversity

    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

    5m10mSafety Stop0m12m max~60 min estimated bottom time

    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.

    Today05:4017:4012h 0m daylightGolden hour 17:12

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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)

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    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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