Keith Pigram, 35, was the captain of the tugboat Ricky Robinson when the vessel capsized and sank in the Mississippi River near Memphis, Tennessee, on December 9, 2017. The tug sent a mayday at 11:41 a.m. just before sinking. Keith was on board with his 19-year-old stepson Anquavious Jamison; Jamison’s body was recovered nine days later when the tug was raised. Keith’s body was never found and he is presumed to have drowned.

Keith had worked for Wepfer Marine for more than a decade and left behind five children. Authorities including the U.S. Coast Guard conducted searches and investigated the capsizing but were unable to recover him or determine a clear cause for the accident.

Did anyone on the river that day or with knowledge of the Ricky Robinson’s operations have information that could help explain what happened?