Union dockworkers at ports across the U.S. began walking picket lines early Tuesday, snarling the movement of billions of dollars' worth of goods.

Some 25,000 dockworkers at East and Gulf Coast ports may strike as early as October 1 if their union doesn't reach a contract deal with shipping companies and port operators.

The Dali was headed for Norfolk, Va., to have roughly 1,500 cargo containers off-loaded to reduce draft then undergo continued salvage and repairs from damage caused during the bridge collapse.

The likely first step will likely be securing the massive container ship that brought the bridge down on Tuesday. Then, clearing debris from the shipping channel.

The Port of Baltimore handles high volumes of auto imports, so while it's at a standstill, some cars and trucks will have to be diverted to other ports, which could raise costs.

Both of Georgia's seaports could see an influx of cargo traffic, amid the Port of Baltimore's indefinite closure.

A momentary loss of propulsion or electricity aboard the massive cargo vessel as it maneuvered in a tight channel in Baltimore may have triggered a cascade of events leading to the bridge collision.

The rural Port of Brunswick is trying to overtake the Port of Baltimore as the top “roll-on/roll-off” port in the U.S.

Trains and trucks move the bulk of goods across the U.S. Some sailors say the Great Lakes waterways are underused shipping options and hope $17 billion of federal investment can help revitalize them.

Hours before the attack on the container ship, the U.S. military said it had shot down two missiles fired toward the same ship

Yemen's Iran-backed Houthi rebels launched a series of attacks on vessels in the Red Sea, as well as launching drones and missiles targeting Israel as it wages war against Hamas in the Gaza Strip.

Cargo ships equipped with massive rigid sails called WindWings could save a substantial amount of fuel, considering how much of the world's goods are transported by sea.

James Spinosa led the West Coast dockworkers union through tumultuous shifts to new technologies over decades. With the shipping industry now pushing for more automation, he reflects on what's ahead.

More than 40 ships were waiting offshore to come into the Port of Savannah on Tuesday.

America runs on diesel. It keeps freight moving, factories humming and farmers planting. But a surge in diesel prices is making everything more expensive.