Complex sentence: Charles Hunt was a navigator when he arrived in the Swan River Colony 1863, he started working as an assistant surveyor in Fremantle, before appointed as a surveyor to Walter Padbury in the Nikol Bay area.
Split into simpler sentences: Charles Hunt was a navigator when he arrived in the Swan River Colony in 1863. He started working as an assistant surveyor in Fremantle before being appointed as a surveyor to Walter Padbury in the Nikol Bay area.