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Shinkoku Maru

Chuuk Lagoon, Micronesia

Typical depth
38 m
Type
Wreck
Level
Advanced
OPEN WATERADVANCEDDEEPTECHNICALSURFACE10203040SAFETY STOP · 3–6 mTYPICAL38 mBOTTOM · 39 m

Notes

167 m Japanese fleet oiler bombed by carrier aircraft during Operation Hailstone, 17–18 Feb 1944. Upright with mast tips at 12 m and keel at ~39 m; bridge holds operating-room equipment, sake bottles, and porcelain.

Marine life

Other
intact operating room with surgical tools, sake bottles and porcelain in the bridge
Corals
hard and soft coral encrusting the entire superstructure — among the most marine-grown wrecks in Chuuk
Sharks
grey reef shark
Reef fish
lionfish, batfish, snapper, grouper, glassfish

Wreck

Vessel
Shinkoku Maru
Class
Imperial Japanese Navy fleet oiler
Origin
Imperial Japan
Sunk
1944 — bombed amidships by SBD Dauntless dive bombers from USS Yorktown (CV-10) during Operation Hailstone, 17 Feb 1944; sank ~4 days later
Length
167 m
Penetration
Possible — with training

Site features

  • Wreck
  • Penetration
  • Historic
  • Overhead Environment
  • War Grave
  • Engine Room
  • Intact Superstructure
  • Coral Encrusted

When to dive

Best
Dec–Apr
Avoid
Jul–Sep

Same Chuuk dry-season window as the other Marus. Shinkoku Maru is one of the lagoon's most heavily marine-life-encrusted wrecks — coral has grown over the railings, davits and bridge wings.

Conditions & access

Visibility
15–30 m
Water temp
28–30 °C
Current
Mild
Access
Open access
Min cert
Advanced Open Water + wreck specialty for the upper hull and bridge at 12–25 m; deep + wreck-penetration training and stage gas for the engine room and holds at 30–38 m.

Location

7.3333° N, 151.8833° E

Dive clubs that visit this site

3 operators list this site on their website

Sources

Curated from 2 sources

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