Tidewater and activist investor Bob Robotti have called a truce in their fight for control of the company.

The Houston offshore giant announced on Monday that it had agreed to add Robotti, of New York's Robotti & Co, to its board of directors, while Robotti will drop his efforts to put himself and two others on Tidewater's board.

"I have been a large and long-term investor in Tidewater because I believe in the potential of the company, its assets and its current leadership team," Robotti said in a statement.