Human Error Probable Cause in Mike Lynch Yacht Tragedy

Investigations focus on crew actions as seven die in superyacht sinking off Sicily coast

Chief executive of yacht manufacturer suggests open hatch led to flooding.
Three crew members, including the captain, are under investigation for manslaughter.
Mike Lynch and his daughter were among the seven who died in the incident.
Survivors were rescued by nearby vessel Sir Robert Baden Powell.
Criticism arises over disparity in rescue efforts for different maritime incidents.