GC Rieber CEO Christian Berg is resigning to focus again on his private OSV investment company Bech Offshore.
He leaves on Friday, the Norwegian offshore shipowner said.
Bech Offshore was set up in 2017 to invest in distressed OSV assets like laid-up ships or to manage ones seized by banks in the downturn.
But Bech was bought by GC Rieber last July as Berg agreed to become its CEO.