Reefwander
A dense school of bigeye barracuda swirls over a reef in Palau's waters

Palau · Palau · Wreck

Chuyo Maru

A freighter so thick with lionfish it took their name

Area photo: 陳德範(Chen, De-Fan) · CC BY 4.0

The Chuyo Maru is a Japanese coastal freighter of 89 m (285 ft) sitting upright in West Malakal Anchorage, close to the dive shops of Koror. So many lionfish live in and on the ship that divers know it as the Lion Fish Wreck.

Also known as Chiyo Maru, Lion Fish Wreck.

Where it is and how deep

Depth profile of Chuyo Maru: typical dive 12–40 m (40–130 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit12 m40 mtypical dive
Depths on a shared scale to 50 m (164 ft); dashed lines mark common certification limits.

7.3403° N, 134.4393° EApproximate position — the dashed circle shows where the site lies; your operator's briefing has the mooring.

The dive

The top of the forward tower rises to 12 m (35 ft), the deck lies at 30 m (90 ft) and the hull rests upright on the bottom at 40 m (120 ft). Visibility swings between 33 m and 7 m (100 to 20 ft), and it is almost always better on the forward half of the wreck.

The wreck

Vessel
Chuyo Maru
Type
Coastal freighter
Length
89 m (292 ft)
Built
1943
Sunk
1944
Cause
Bombed during Operation Desecrate One on 30–31 March 1944; sank on 1 April
Lies
Upright in 40 m in West Malakal Anchorage, deck at 30 m

Built in 1943 and owned by Toyo Kisen Kaisha of Tokyo, the Chuyo Maru was a medium-sized coastal freighter of 1941 tons. Bombs from the Desecrate One raid struck her on 30–31 March 1944, and she went down on 1 April. The wreck was then forgotten until April 1989, when the wreck hunters Francis Toribiong and Klaus Lindemann rediscovered her.

Marine life and season

The sources we used don't single out particular species here.

Month-by-month season rating for Chuyo Maru
JanFebMarAprMayJunJulAugSepOctNovDec
PrimePrimePrimePrimeGoodFairFairFairFairFairGoodPrime

Season follows Palau: Boats run every month; November to April has the best conditions, and June to December is typhoon season.

Know before you go

  • Penetration is considered dangerous because of the ship's age and the silting inside; only experienced, skilled divers should go in.

Dive videos

Chuyo Maru Wreck Palau 2015 Final · Shark Diver - DiveWet on YouTube

Questions divers ask

What experience does the Chuyo Maru need?+

It is a dive for advanced divers with deep and wreck diving experience: the deck lies at 30 m and the hull sits on the bottom at 40 m.

Sources

  1. Chuyo Maru — Fish 'n Fins Palau
  2. Scuba diving in Palau — Wild Hearted
  3. OpenStreetMap geocoding — OpenStreetMap

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