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Dive site

IJN Nagato

Bikini Atoll, Marshall Islands

Typical depth
52 m
Type
Wreck
Level
Technical
OPEN WATERADVANCEDDEEPSURFACE102030405060SAFETY STOP · 3–6 mTYPICAL52 mBOTTOM · 52 m

Notes

Japanese battleship and Yamamoto's flagship at Pearl Harbor. Sunk inverted in 1946 atomic tests; superstructure crushed under hull.

Marine life

Other
the four bronze propellers — visible from below the upturned stern
Corals
encrusting coral on the exposed hull
Sharks
grey reef shark
Reef fish
snapper, grouper, batfish

Wreck

Vessel
IJN Nagato
Class
Nagato-class battleship; Yamamoto's flagship at the attack on Pearl Harbor
Origin
Imperial Japan
Sunk
1946 — sunk by underwater atomic test (Operation Crossroads, Test Baker, 25 Jul 1946); capsized and sank during the night of 29/30 Jul 1946, ~5 days after the detonation
Length
224 m
Penetration
Not advised

Site features

  • Wreck
  • Deep Wreck
  • Trimix
  • CCR Recommended
  • Liveaboard Only
  • Historic
  • Permit Required
  • Battleship
  • Inverted Hull

When to dive

Best
Mar–Nov
Avoid
Dec–Feb

Same liveaboard window as the rest of Bikini. Nagato lies inverted under ~52 m of water — the underside of the hull is the closest you can get; the bridge and 16-inch turrets are crushed beneath.

Conditions & access

Visibility
20–30 m
Water temp
28–30 °C
Current
Mild
Access
Liveaboard only
Min cert
Trimix or CCR. Inverted hull, no realistic penetration; the dive is about the propellers, the casemate guns, and the sheer scale.

Location

11.5856° N, 165.5256° E

Dive clubs that visit this site

2 operators list this site on their website

Sources

Curated from 1 source

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