National Geographic : 1946 Dec
Mending Dikes in the Netherlands 801 Lawrence Earl from Black Star This Rope Will Anchor a Sunken Barge until It Is Properly Secured Even after a barge is sunk into place there is grave danger that a storm may wash it away. Clay and rocks are piled on and around the barge. Heavy hawsers hold it in place. Fortunately, salt penetration in Walcheren soil was not very deep, but it will be several years before normal crops are harvested (page 791).