Longtime maritime industry leader Dee Burch has taken the reins at Gunderson Marine & Iron, the Portland, Oregon-based shipbuilder announced Aug. 5. With the recent acquisition of all Gunderson shares, Burch is now the sole proprietor and president of the company, which operates a 58-acre industrial site on the waterfront. “My transition to an active role in the organization is both a profound honor and a tremendous responsibility,” Burch said in a statement. “I am committed to continuing this rich tradition of excellence in barge building while expanding our capabilities in other complex fabrication including bridges, hydro, ships, tugs and…