Brazilian shipyard Enseada Industria Naval (EIN) has filed for preventive bankruptcy in Rio de Janeiro.

It has debts of BRL 2.3bn ($557m), the Valor Economico daily said.

Domestic conglomerate Odebrecht now has a 97.25% stake in EIN, it was reported.

The yard was established to build drillships for Sete Brasil, but this company collapsed in 2016.

Main creditor banks are state-run CEF and Banco do Brasil.

In 2017, EIN reached an out-of-court debt restructuring deal with creditors.

It said it would reorganise BRL 1.3bn through an extra-judicial recovery filed with a Rio de Janeiro judge.

EIN was at one point partly owned by Kawasaki Heavy Industries of Japan.