The Usukan wrecks, near pulau Mantanani

October 14th 1944
USS Dace (Lt.Cdr. B.D. Claggett) torpedoes and sinks the Japanese merchant tankers Eikyo Maru and Nittetsu Maru and damages the merchant ore carrier Taizen Maru  off north Borneo on position 06º05'N, 115º55'E. which is now known as Usukan Bay.

Wreck 1 – known as Rice Bowl wreck, probably the Eikyo Maru

Resting position: Upright
Length: approx.150m
Tonnage: approx.7000
Surface to Deck: 28m
Surface to Bottom: 36m

Wreck 2 – Usukan Bay wreck, probably Nittetsu Maru

Resting position: Portside
Length: approx.150m
Tonnage: approx.7000
Surface to Deck: 30m
Surface to Bottom: 40m

Marine life:
Giant grouper, yellow-tail barracudas,snappers, Skip jack tuna and a Fan- tail ray. The wrecks are densely covered with soft corals and Black coral trees.