Nordic American Tankers (NAT) CEO Herbjorn Hansson has warned investors that the second quarter will be worse than the first.

But, in a note to shareholders, he added that "rates are well above cash break-even."

And he added that the owner is in a solid financial position with a strong cashflow.

Hansson also revealed he has visited some of the largest oil companies in the world in recent weeks, notably in Beijing and Houston.