Aikoku Maru

Japanese armed merchant cruiser and transport 沈没 1944 40–64 m Chuuk (Truk) Lagoon

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戦争の墓標 ここで命を落とし、船内に眠り続けている人々がいます。戦没者慰霊碑を訪れるつもりで潜りましょう。触れない、持ち出さない、乱さない。 Hundreds of troops and crew died in the explosion; published figures vary.

ドキュメント済み

デッキまでの水深

40 m / 131 ft

最大水深

64 m / 210 ft

建造／沈設

1940 / 1944

長さ

152 m

船のトン数

10,438 GRT

概要

Upright; Forward Third Destroyed

レベル

Technical

ベストシーズン

Dec–Apr

このサイトについて

The Aikoku Maru was one of the war's hybrid ships: a fast, handsome OSK liner completed in 1940, armed and sent raiding in the Indian Ocean early in the war, later reduced to hauling troops and munitions as Japan's perimeter contracted. On 17 February 1944 she lay at Truk loaded with both. A dive bomber's hit reached her forward holds, and the resulting explosion was among the most violent of the raid — it obliterated the front third of the ship and, by many accounts, caught the attacking aircraft in the blast. She sank at once, taking hundreds of soldiers and sailors with her; no reliable count survives. What remains sits upright and deep: an amputated ship beginning abruptly amidships, superstructure looming out of dim water past forty meters. Survivor associations have placed memorials aboard, and of all Chuuk's wrecks she carries the strongest claim to be left in peace. Technical divers visit; everyone else should read about her instead.

沈没の経緯: A bomb detonated her forward munitions cargo during Operation Hailstone, 17 February 1944.

本日潜る

コンディション: The surviving aft two-thirds is intact and imposing; the bow area is unrecognizable blast wreckage.

洞窟貫通（ペネトレーション）: Limited. Interior work at these depths is for experienced technical teams; most visits stay outside the superstructure, and the memorial spaces are not thoroughfares. オーバーヘッド環境への進入には専門的なトレーニングが必要です——最低限、レック・ダイビング認定資格が必要で、完全貫通には技術的なレック・トレーニングが求められます。

推奨ライセンス: Technical/trimix certification

流れ（カレント）: Mild · 透明度: 15–30 m

海洋生物: Black corals and hydroids at depth, big groupers under the counter, and trevally hunting along the broken forward edge.

危険生物・リスク: Depth and decompression obligation govern everything; unexploded ordnance is scattered through the wreckage; light is low.

保護区域と法規制

Chuuk lagoon monument protection; state dive permit/fee applies.

Among the most heavily weighted war graves in the lagoon — hundreds died here in a single moment. Memorial plaques aboard mark it; treat the entire wreck as consecrated ground.

Nothing is removed from this ship, ever.

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