NYK has unveiled a centaph honouring its seafarers who died in the sinking of the Hirano Maru in World War One.
The monument has been built in Wales to mark the cargo-passenger vessel's loss on 4 October, 1918.
It was torpedoed by a German U-boat, killing 210 crew and passengers.
Keiji Kubota, executive vice president and COO of NYK Group Europe, attended the event and "offered his deepest compassion for the repose of the souls of all those who perished," the company said.
He also expressed his gratitude to a local maritime volunteer group for its efforts to establish the cenotaph to convey the tragedy of war and honour the victims.
Hirano Maru was delivered in 1908, and began a cargo-passenger service between Yokohama and Liverpool.
The attack took place off the coast of Wales just weeks before the armistice that ended the conflict.
A number of bodies washed ashore and locals buried them, making a wooden grave marker, which will be replaced by the cenotaph.
