Shipyard to close facilities in Phila

The city is seeking another ship-repair company to lease Metro Machine Corp.’s dry docks at the old Navy Yard. Metro Machine Corp., a Norfolk, Va., company that came here a dozen years ago with dreams of building a radically new type of tanker ship, is shutting down its Philadelphia operations. The tankers it hoped to build offered innovations to protect the environment, but no one was willing to risk buying the first ship of an unproven design.