
Yamagiri Maru
Chuuk Lagoon · Federated States of Micronesia
A 134 m Japanese passenger cargo ship sunk on the second day of Operation Hailstone in February 1944 by SBD Dauntless bombers from USS Yorktown and USS Bunker Hill. She rests on her port side a mile north north west of Fefan Island, the hull stretching from 12 m at the starboard rail to 34 m on the sand. Hold five still cradles stacks of 18 inch armour piercing shells cast for the battleship Musashi, their copper driving bands green with patina. The engine room and bridge are open for trained penetration divers, the props and rudder buried under three quarters of a century of black coral and crinoids. Human remains and live ordnance are still inside the hull.
Conditions
Depth
12 to 34 m
Advanced depths
Current
Usually gentle
Can pick up on the edge
Visibility
10 to 20 m
Clearest in the calm season
Water
28 to 30°C
Tropical wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Vis (m) | 15 | 15 | 15 | 15 | 10 | 10 | 10 | 10 | 10 | 10 | 15 | 15 |
| Current | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle |
Your chances of seeing each animal
Glassfish
Last confirmed Apr 15, 2026 · 130 records
Almost always
Nearly every dive
Batfish
Last confirmed Feb 10, 2025 · 1 records
Likely
About 6 in 10 dives
Pacific Golden-Plover
Last confirmed Jun 28, 2026 · 16 records
Likely
About 6 in 10 dives
Micronesian Myzomela
Last confirmed Jun 28, 2026 · 15 records
Likely
About 6 in 10 dives
Lionfish
Expected
Known here, not yet in recent logs
Whitetip reef shark
Expected
Known here, not yet in recent logs
Peacock Damsel
Expected
Known here, not yet in recent logs
Bluefin Trevally
Expected
Known here, not yet in recent logs
Gear
Basic kit
For this site