F.B.I. agents on Saturday boarded a container ship that is managed by the same parent company as the cargo vessel that collided with the Francis Scott Key Bridge in Baltimore in March, which had toppled the structure and killed six workers.

Attorneys for a road construction inspector who survived the Baltimore bridge collapse in March are planning to file a claim against the owner and manager of the ship that lost power and crashed into the Francis Scott Key Bridge.

The Federal Bureau of Investigation boarded a vessel managed by the same company whose cargo ship caused the collapse of the Francis Scott Key Bridge, according to a statement published Saturday.