When the cable is in place, it is covered with concrete. Engineers watch the operation from on board ship and operate the machines by remote control.
船上的工程人員都是透過螢光幕指揮海底的布纜作業。目前國際間使用的海底同軸電纜，大致分為「鎧裝」和「無鎧裝」兩種。