Aikoku Maru
Conditions & tides
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Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
The Aikoku Maru is a large passenger-cargo ship wreck in Truk Lagoon. During Operation Hailstone it was hit by a torpedo that set off its ammunition stores in a massive explosion. The wreck lies at 130 to 200 feet (40 to 61 m), a deep and challenging dive.
Structure. The explosion destroyed much of the midsection and left a gaping hole, with wreckage strewn across the seafloor around it. The bow and stern are relatively intact, and the stern still has a large deck gun. A memorial plaque inside the wreck commemorates those who died in the explosion.
The wreck is now a reef with colourful corals, anemones and a variety of fish. Its depth means it is less disturbed.
Marine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Common Mushroom CoralFungia fungitesReported here · unconfirmed
Tongue CoralHerpolitha limaxReported here · unconfirmed
Feather CoralPolyphyllia talpinaReported here · unconfirmed
Barcheek TrevallyCraterognathus plagiotaeniaReported here · unconfirmed
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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