When a ship is secured alongside, the head and back springs prevent her from surging ahead or astern at her berth, and together they assist the breast ropes to keep her close alongside.
Xa inqanawa ikhuselekile kwelinye icala, ukhokelo notwabuluko, lwangasemva lukhusela kugalelo olungaphambili okanye ngesemva ngakwindawo yokulala inqanawa, kwaye xa zizonke zithumela utwabuluko lwentambo lugcineka kwicala elikufutshane.