A length of cordage with a lead weight secured to one end and used from time immemorial to determine the depth of water. The bottom of the lead is concave to allow it to be "armed" with tallow. By this the leadsman can tell the nature of the sea bed from the particles that become stuck in it.
Bubude beentambo ezimfutshane ezinobunzima obukhusela elinye icala zize zisetyenziswe ngamaxesha ngamaxesha ukufumana ubunzulu bamanzi. Umphantsi wento enzima ibuqolomba ukuvumela ukuba "ixhotyiswe" ngamafutha okwenza amakhandlela. Ngale ndlela indoda ekhokelayo inako ukuchaza imeko ngamasuntswana athi agxinge kuwo.