Japanese owner Iino Kaiun has raised its forecast for the rest of the year despite lower nine-month earnings.
The company said it made JPY 3.81bn ($33.48m) on a net basis to 31 December, against JPY 4.85bn a year ago.
Its 58 ships brought in revenue of JPY 62.38bn, down from JPY 72.47bn.
The forecast profit for the 12-month period is now JPY 3.3bn,