By surrounding the propeller with a nozzle it is possible to achieve a thrust increase of up to 6 % for the same power in the conditions under which cargo ships operate.
Ngokungqonga umphini ngomlomo wesinyithi lamanzi kungenzeka kuphunyezwe ukuhlasela okunyukileyo ukuya kwisithandathu seepesenti kumandla ombane afanayo kwiimeko ezithi iinqanawa zokuthutha umthwalo zisebenze phantsi kwazo.