In 1967, following a number years of working with his father. Robert Dann along with his brother Rodney Dann, acquired the tug Rodney H. Dann from their father.
In 1968, the two constructed their first new the Ocean Tower. Which was built in 1968, by Main Iron Works of Houma, Louisiana. That was followed by the Zeus which was built in 1974, by Bobbin Fabricators of Harvey, Louisiana.
Captain Robert Dann, along with his wife Joan. Later formed their own company. The Robert Dann Company, later changed their name to the Dann Marine Towing Company.
In 1985, Dann and his family acquired a shipyard in Chesapeake City, Maryland from Robert's mother Ruby. Canal Place, as it is called. Is the current base of operations for Dann Marine Towing Company. The property houses an office, warehouse, workshop, and bulkheads. To allow servicing the company's fleet of tugs, and barges.