If you could imagine the bottom hull of the Will-o-the-wisp, shown here, the long narrow end of the beached hulk could match the stern of this British blockade runner found off Texas. The length of the hulk being shorter than the orginal length of the Ivanhoe due to the stern portion being missing. The narrow bottom starting just behind the aft mast and continuing to the rudder, making a fine point. Stern overhang adds to the length above the rudder. Someone needs to do a higher level of measurements.

David