Hardly noticeable for the layman, and far less spectacular, are the changes that have taken place in propulsion techniques, in navigation, and in the automation of ship operation that are the direct results of the scientific and technical progress that has taken place.
Indoda elalayo ekunzima ukuqapheleka nekude le ekwenzeni umdla, lutshintsho oluthathe indawo kubugcisa benkqubela-phambili, uqhubo-nqanawa uzenzelo kwinqanawa esebenzayo, ziziphumo ngqo zeengcali nobugcisa benkqubela ethathe indawo.