Complex sentence: The bay was reclaimed gradaully after World War II. There were many ship yards along the then-reclaimed shore between the 1950s and 1980s, many of which have since relocated to the north shore of Tsing Yi Island.
Split into simpler sentences: The bay was reclaimed gradaully after World War II. There were many ship yards on the then-reclaimed shore between 1950s and 1980s. Those ship yards were relocated to the north shore of Tsing Yi Island.