More details have emerged of a shipyard accident that is delaying the delivery of Seaway 7's new wind turbine foundation installation ship in China.

The Oslo-listed shipowner had previously said in its third-quarter report that unplanned movement of a crane A-frame on its 48,000-dwt semi-submersible Alfa Lift took place at China Merchant Industry Holding on 18 October.

Seaway 7 chief executive Stuart Fitzgerald told analysts on a conference call that the top of the main crane is designed to fold down as the ship passes under bridges.