Work on this phase, which cost US $ 122.2 million to complete, started in July 1974, as one of the ten major construction projects. Among the new facilities are seven piers, l, 832 meters of breakwaters, three warehouses, a log pool and the latest navigational aids.
並於原址旁另闢一新的大商港。蘇澳港的擴建工程，自民國六十三年開始施工，分二期進行，全部工程預計於七年半內完工。