Some small ships and submarines have diesel main engines arranged in groups or banks on each shaft and clutched in according to the speed required .
Ezinye inqanawa kunye nenkwili zinenjini ezingundoqo ezisebenza ngedizili ezilungiselelwe ngokwamaqela okanye ngokwebanki kumgodi ngamnye kwaye zibambane ngokwesantya esifunekayo.