You will often hear this called the Tack Knot, or the Double Wall and Crown. The Manrope Knot is used at the end of ropes on either side of a gangway or to stop a lanyard from slipping.
To Tie a Manrope Knot:

You will often hear this called the Tack Knot, or the Double Wall and Crown. The Manrope Knot is used at the end of ropes on either side of a gangway or to stop a lanyard from slipping.
To Tie a Manrope Knot: