The Spanish bowline knot is unique to most knots in that it creates a double loop at the end of the line. This is useful if you need to lift a conscious person, as each loop is placed around a leg and the person holds onto the standing part of the rope. If unconscious one loop is placed around the armpits and one loop is placed around the knees.
Warning: Be sure to cinch up the knot before use or it could slip.