Je was op zoek naar: rudderstock (Engels - Xhosa)

and the rudderstock should run all the way to the lower edge of the rudder.
kwaye iruddeisteck funeka ihambe yenke indlela ukuza kutsho kwisiphetho esisezantsi.

the propeller area is very subject to damage from flotsam as is the rudderstock and tube when a free-standing rudder is used.
indawo yesiqhubi inokwenzakala ngenxa yezinle ezidadayo njengoko kunjalo ngerudderstock netyubu xa irudder ezimeleyo isetyenziswa.

finally, the rudderstock itself may be undersized for economy's sake, leading to a break where it exits the hull.
ekugqibeleni, iruddustock ngoku nekwaye inganebuncinci, ingeneli nyinxa yeqoqosho, elineku khokelelo ekwephukeni apho ishiya isiqu.

unreliable sheave pivots, broken quadrants, cables that have jumped out of the groove in the quadrant due to loose tensioning, broken turnbuckles, or breakage of the segment that bolts the quadrant to the rudderstock.
isikhinkwana ekujikeleza kuso isheave esingathe mbakalonga, isilinqonise -- mbombo esiqhawukileyo, intambo ezitsibe kwigreeve kwisilinganisi -- mbombo ngenxa yoku bayekeyeko, amugophe amabanti ephukileyo, okanye ukophuka kwendawo ebditela isilinganisi -- mbombo kwi rudela stock.

best is a coupling that has been retrofitted to one of the rudderstocks.
okubhelele ludityaniso elufakelwe kwenye ye rudderstock.