Complex sentence: After the earthquake, an attempt was made to establish a naval base at Port Antonio instead, but the climate there proved disagreeable so from 1735 Port Royal once more became the focus of the Admiralty's attention.
Split into simpler sentences: After the earthquake, an attempt was made to establish a naval base at Port Antonio instead, but the climate there proved disagreeable. From 1735, Port Royal once more became the focus of the Admiralty's attention.