In a head sea the severe and rapid pitching movement may cause frequent racing of propellers and unfair hogging and sagging strains.
Kwintloko yolwandle oluphindileyo kunye nokukhawuleza ngokugxumeka ukushenxisa ekunokubangelwa kwiziqhubi kunye nokungalungi kokwenza ngokupheleleyo kunye nokubhena kwemisonto.