Background
Chalmers was born on 29 April 1942 in Young, New South Wales, to Donald Lisle Chalmers and Constance (née Eagles).
Chalmers was born on 29 April 1942 in Young, New South Wales, to Donald Lisle Chalmers and Constance (née Eagles).
Chalmers joined the RAN in 1958 and chose to specialise in navigation.
He served in HMAS Yarra and HMAS Parramatta during the Indonesia–Malaysia confrontation in the mid-1960s and went on to command HMAS Perth from 1981 to 1983. He was awarded the National Medal in 1977. In 1988, he attended the Royal College of Defence Studies in the United Kingdom.
He was appointed Maritime Commander Australia in December 1993, Assistant Chief of Defence Force responsible for Australian Defence Force development and international defence relationships in April 1995, and finally Chief of Navy in July 1997.
He was awarded the Legion of Merit by the United States Government in 1998 and retired in July 1999.