The second incident was most likely triggered by a significant rupture in a main steam line, which was transporting steam at very high pressure. This hypothesis was originally proposed by Turner and suggested that the failure of this line played a critical role in the unfolding of events.

Turner's early theory focused on the impact that the ruptured steam line would have had, emphasizing how such a malfunction could lead to catastrophic consequences. The explanation reflects the technical challenges and dangers associated with the operations of steam-powered vessels, particularly during intense conditions.