On the 19th of March 2004, the tankship ST HELEN collided
with the uninspected towing vessel DAVID and COLLEEN
pushing tank barges M-405 and M-407 in the Houston Ship Channel.
The ST HELEN, M-405 and M-407 sustained damage from the collision.
Approximately 151,200 gallons of NAPTHA
was spilled into Galveston Bay from the M-407.