I-S-Type Tubular Turbine, eyaziwa nangokuthi i-shaft-extension turbine, isebenzisa ukuhlelwa kwe-axial okuvundlile. Isici esisobala sesakhiwo ukuthi ama-guide vanes ahlelwe ku-65° kuya enkabeni yeyunithi, futhi kusetshenziswa indlela yokuqondisa amanzi eyi-axial conical. Isiteshi sokugeleza se-S-Type Tubular Tubrine sakhiwe ngepayipi lokungena, indandatho yesihlalo, indlela yokuqondisa amanzi eyi-conical, igumbi lokugijima, ikhoni yomsila, i-S-type draft elbow kanye ne-tailrace. Isiteshi sokugeleza se-S-Type Tubular Tubrine siyi-axial, futhi amanzi ageleza ngokuhambisana ne-axis ye-turbine kuya kumgijimi.