Yangzijiang Shipbuilding executive chairman Ren Yuanlin has retired from the Singapore-listed company.
The Chinese yard group said in a statement that the 66-year-old wanted to "pursue other career opportunities".
He is being replaced by his 38-year-old son, Ren Letian, who will retain his chief executive role.
The elder Ren took a four-month break from the company in August to assist the Communist Party of China in an investigation of Jingjiang city official Liu Jianguo.
His absence led to significant turmoil for Yangzijiang's stock at the time.
Liu was under investigation by an internal party body for suspected serious violations of the law, according to an announcement by Beijing’s Central Commission for Discipline Inspection, the organ of the Communist Party of China that investigates infringements by party members.
Liu, closely associated with the development of the shipbuilding industry in the region where Yangzijiang is located, had also served as chairman of the management committee of Ren's private Jiangsu Yuanlin Charity Foundation, with decision-making authority over its funds.
Based in Jingjiang in Jiangsu province, Yangzijiang is China's largest privately-owned shipyard.
It entered a joint venture shipyard deal with Japan’s Mitsui E&S Shipbuilding in August called Jiangsu Yangzi-Mitsui Shipbuilding.
