The master switches for the navigation lights and the not-under-command lights, the position and controls of the bridge radar display and the control handles for the whistles (or sirens) are equally important.
Esona sibane sikhulu esikhanyise kuyo yonke indawo kwinqanawa, nezibane ezingekho phanti kolawulo, nendawo apho zima khona izixhomo ezibonisa inqanawa, xa nempempe ekhaliswe ngombane kukho ingozi-zonke zibalulekile.