Injini yangaphandle yinkqubo yokuqhubela phambili exhonywe ngaphandle kwesikhephe. Idla ngokuba ne-injini, i-gearbox kunye ne-propeller, zonke zifakwe kwiyunithi enye. Ezi motors ziyilelwe ukuba zisuswe ngokulula kwaye zincanyathiselwe kwi-transom yesikhephe, evumela ukufakwa kunye nokugcinwa okuthe ngqo. Ii-injini ze-Outboard ziza kwiisayizi ezahlukeneyo kunye nokulinganisa amandla ukuze zilungele ubungakanani obuhlukeneyo besikhephe kunye nokusetyenziswa.