I came to the same conclusions that cbr998 did with the spreader bar, balls tied and ratcheted, etc.  But I can't figure out in pic 2 what the strap clipped to the sub's hood collar is attached to.  Also in pic 2, there is something on the left side of his face (right side of the picture) that I don't know what it is.  It looks to be the same rope in pic 3 in the top right corner.