Particularly important items are the telephones, voicepipes and intercom systems, and the alarm pushes for the lifebuoys.
Ezona nto zibalulekileyo zimfono-mfono, imibhobho yoqhakamshelweno, kunye nesithungelelwano sokuthetha, ihlabe umkhosi nesangqa umntu angabambelela kuso xa esengozini.