​​On April 27, 2025, about 2056, the towing vessel Ginny Stone was building a tow of seven barges on the left descending bank of the Lower Mississippi River and the tanker Isla de Bioko was upbound on the river when the tanker and Ginny Stone tow collided at mile 110.7, near River Ridge, Louisiana. One barge in the Ginny Stone tow sank, and the remainder of the tow broke apart and drifted downriver. One of the barges collided with the moored bulk carrier Bulker Bee 30. There were no injuries, and no pollution was reported. Damages to the barges, Isla de Bioko, and Bulker Bee 30 were reported at $1.9 million.​

​​We determined that the probable cause of the collision between the Ginny Stone tow and the tanker Isla de Bioko was the hydrodynamic forces from the close passing of the Marquette Mariner tow as it moved upriver into a strong current, which displaced the Ginny Stone tow from the bank as the tow was being made up and could not be overcome by the Ginny Stone and an assisting towing vessel, resulting in the tow moving into the path of the northbound Isla de Bioko.