Nagisan Maru

Rock Islands, Ngeruktabel, Palau, Palauwreck33 m maxadvanced

Conditions & tides

Channel site — tidal current funnels through here and can run fast, changing quickly with the tide. It is usually strongest around mid-tide and eases near the slack windows below. Dive with a local operator who knows the timing.

Nagisan MaruNgeruktabel

Good · 5/5

conditions visualisation

Good5/5

Calm and diveable right now — best window today 6 AM–4 PM.

Wind11 kn ENE

Current~0.2 kn NNE · model

Swell

0.5 m · 6s · NE

Water

30 °C

Max depth

33 m

Conditions through the day

5 AM5 PM

Calmest current near slack — 12.30 & 01.00 local

Sunrise 05.51 · Sunset 17.41 local

Show details

Tide · local

Outlook — select a day for full conditions

On-face swell 0.0 m — the component of the swell aimed at this site’s exposed face. Strong-current reef: plan a drift and enter near the slack windows above. Current is a regional model value (Copernicus, ~9 km grid) — a guide to the area, not a precise reef measurement. Imagery © Esri · not depth or visibility.

Scored by DiveConnect's site-physics model

Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.

Dived here today? How were conditions vs. what we showed?

About this site

The Nagisan Maru is a 110-metre Japanese freighter that sank in the American air raids on Palau in March 1944. She was built in Tokyo in 1931 and lies in an inner bay anchorage about 11 km southeast of Koror, tilted along a sandy slope on a muddy seabed at 26 to 33 metres.

The water is murky, with visibility of 5 to 15 metres, and there is no current. Few divers visit, so it feels eerie and atmospheric, and it suits advanced divers with Advanced Open Water and Nitrox.

The wreck is something of a museum, with preserved helmets, sake bottles, kitchenware and even weaponry. Schools of glassfish and colourful soft corals live on it. Wreck penetration needs technical training, and unexploded ordnance may still be present, so touch nothing.

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