Japan's Mitsui OSK Lines has revealed it is expecting a hugely bigger profit than previously forecast despite warning of softening earnings from red-hot containership markets in May.

The giant Tokyo-listed shipping company is now predicting a net profit of ¥170bn ($1.54bn) for the six months to 30 September, up from the previous forecast of ¥50bn made on 30 April.

By comparison, MOL posted earnings of ¥30bn in the same period the year before.