Complex sentence: However, Penang port's initial pre-eminence was later supplanted by Singapore owing to its superior geographical location, but Penang remained an important feeder to Singapore--funnelling the exports meant for global shipping lines by ocean-going ships which had bypassed other regional ports.
Split into simpler sentences: However, Penang port's initial pre-eminence was later supplanted by Singapore owing to the latter's superior geographical location. In spite of this, Penang remained an important feeder to Singapore--funnelling the exports meant for global shipping lines by ocean-going ships which had bypassed other regional ports.