To the modern seaman used to some form of patent log, this procedure must seem a little rough, but it is surprising how accurate an estimate of speed can be made with practice.
Ngemini zendoda yaselwandle idla kwenye ifomu lwesixhobo esinegunya, le miqathango zijongeke xhabaxa kancinci, kodwa ibonisa lucace kanjani uqikelelo lwesantya olungenziwa kunonongo.