So before the advent of self - propelled boats, the only means of getting a narrow boat through was by the dangerous practice called legging. A pair of planks was fitted to each side of the bow of the boat.
Бидејќи порано немало моторни чамци, единствен начин еден каналски чамец да мине низ тунелите била една посебна и прилично опасна техника.