National Geographic : 1940 Oct
The National Geographic Magazine Hemp Rope Stout Enough to Hang a Dozen or More Big Elephants This colossal coil, known as ship towrope, is 750 feet long and weighs 3,250 pounds. In its 4-inch diameter there are 855 separate hempen strands. Manila hemp, made from abaca fiber, is used by ships all over the world. For this "strategic material" the United States depends entirely on the Philippines.