Complex sentence: The "Almirante Latorre" and the "Admirante Cochrane" were built in British yards for the Chilean Navy and prior to delivery to Chile were purchased for use by the Royal Navy in World War One.
Split into simpler sentences: The "Almirante Latorre" and the "Admirante Cochrane" were built in British yards for the Chilean Navy. Prior to delivery to Chile they were purchased for use by the Royal Navy in World War One.