The collision occurred when the Portuguese-flagged container ship MV Solong struck the U.S.-flagged oil tanker MV Stena Immaculate while it was at anchor off the coast of East Yorkshire. The incident happened in dense fog, and Solong reportedly did not slow down or maneuver before hitting the tanker.

The MV Stena Immaculate was carrying Jet-A fuel. It is part of the U.S. Department of Transportation's Tanker Security Program, which supports U.S. military operations by providing fuel during conflicts or national emergencies.

All crew members from both vessels have been accounted for. However, one crew member from the Solong remains unaccounted for initially, but later reports indicate all U.S. mariners are safe. One person was hospitalized.

The collision resulted in a leak of jet fuel into the North Sea, raising environmental concerns about the potential impact on marine life and ecosystems.