Crucian Gold??s Carrick Bend Knot, a symbol of strength, connection, and protection, honors founder Brian Bishop. In 1972, as a commercial diver, Brian wore the Navy??s ??Mark 5?? copper helmet. ?Underwater, two ropes secured his air hose and communication line, ensuring his lifeline to the surface. When stowed, the ropes were tied into a Carrick Bend Knot to prevent tangles and protect the helmet.