The pilot cons the ship from the bows, and a picture drawn four thousand years ago shows him using a long pole to sound his channel and so avoid the dangers to be anticipated.
Umalathi ndlela kwikhonizi zenqanawa ukusuka ngaphanmibili bekukho umfanekiso owenziwa kudala kumawaka amane eminyaka edlulayo wayeyisebenzisa ngokuthi asebenzise ipali ende enesandi ukwenzela indlela nokuzama ukuqanda ingozi ezinokuthi zenzeke kuqala.