An NTSB investigation into the March 16, 2024 sinking of barge PTC 706 on the Lower Mississippi River highlights how reduced freeboard at the head of a tow can rapidly escalate into a major casualty. The barge was part of a 34-barge tow pushed southbound by the towing vessel Chad Pregracke near New Roads, Louisiana, when it suddenly went down by the bow and sank, causing the tow to break apart. Five barges were damaged, with total losses estimated at $2 million, though no injuries or pollution were reported. Investigators determined that PTC 706 likely had excess weight forward—possibly from water accumulation in rake voids, wing tanks, or the open hopper—which reduced its freeboard. Once the bow submerged, the tow’s forward momentum forced the barge further underwater, leading to its rapid sinking. The incident underscores the risks associated with water accumulation, reduced freeboard, and tow speed, particularly for barges positioned at the head of large tows.