At some ports - Chatham river docks, for example - the neap rise may give insufficient depth of water over the sill of the dock for certain ships to be docked at that tidal period.
Kwamanye amazibuko, kwizibuko lomlambo iChatham-umzekelo, ukuzala kunokwenza amanzi angabi nzulu ngokwaneleyo kwithala eliphantsi kwefestile ukwenzela ezinye inqanawa zihlale ngelo thuba amaza ezibukweni efanelekile.