Japan Marine United (JMU)’s two main shareholders have revealed combined losses of ¥92.1bn ($842m) related to the shipbuilder.

The “exceptional” losses were declared in the full-year earnings of steel giant JFE Holdings and manufacturer IHI Corp under ­financial reporting ­requirements to include the earnings of significant subsidiaries.

JMU’s largest shareholder, JFE, listed losses of ¥60.1bn for the 2017 fiscal year related to the yard, while IHI reported losses of ¥10.9bn.