Baltimore cargo ship explosion near Key Bridge site: What we know

Loading Video…

This browser does not support the Video element.

Video shows aftermath of Baltimore ship explosion

Video posted to social media appears to show the aftermath of an explosion on a cargo ship in Baltimore Harbor.

Video posted to social media appears to show a cargo ship exploding in the Baltimore Harbor, near where the Baltimore Key Bridge collapsed in March 2024. 

Witness Jay Steinmetz told FOX 5 that the name of the ship is the MV W Sapphire. 

According to VesselFinder, the W-Sapphire is a bulk carrier headed to Mauritius. 

Baltimore Fire could not confirm the explosion.

Ship explosion in Baltimore harbor

What we know:

According to the Baltimore City Fire Department, they responded to reports of an explosion aboard a commercial vessel in the Patapsco River near the former Key Bridge site on Monday evening.

Firefighters responded by both land and water, including the department’s fireboats. Upon arrival, the fireboat crew located the W-Sapphire, a 751 foot bulk carrier, showing signs of damage consistent with a fire and explosion.

The vessel remained afloat and was being assisted by tug boats, according to officials.

Image shows screen shots from a video of the aftermath of a ship explosion in Baltimore Harbor on August 18, 2025. (Credit: Jay Steinmetz)

The ship’s crew confirmed that all 23 people on board were accounted for and uninjured.

Officials said that fireboats remained on scene as the Coast Guard and other agencies began their investigation. The vessel will be moved to a designated anchorage area and held there until cleared by the Coast Guard.

Dig deeper:

The BCFD operates the region’s only full-time fireboat capable of responding to not only fires but any maritime emergency on the Chesapeake Bay. The 87-foot John R. Frazier was acquired in 2007 through federal grant funding and supports both the City of Baltimore and the Port of Baltimore.

The backstory:

The March 26, 2024, disaster occurred when the massive container ship Dali lost power and collided with a supporting column of the bridge. Six construction workers, who were repairing potholes at the time, died when the structure crumbled. The collapse brought months-long closures at Baltimore's port and caused severe traffic congestion, issues that persist across the region today.

According to federal investigators, the Maryland Transportation Authority failed to conduct a recommended vulnerability assessment, which could have identified the bridge’s significant risk of collapse due to ship strikes.

READ MORE: New Baltimore Francis Scott Key Bridge design unveiled

Efforts to rebuild the bridge are underway. Officials have announced that the replacement structure will be taller and more resilient to ship impacts. The new design, a cable-stayed bridge—the first of its kind in the state—is estimated to cost more than $1.7 billion and could be completed by 2028.

The original Francis Scott Key Bridge, a 1.6-mile steel span connecting Baltimore’s industrial communities and providing a bypass for downtown traffic, opened in 1977 after five years of construction.

This is a developing story. Stay with FOX 5 DC for updates. 

The Source: This story includes information from a witness and previous FOX 5 DC reporting. 

NewsU.S.