Herbert Sidney Roy Wilkinson was born on 7 March 1910 in Sydney. He was the son of William James Henry Wilkinson (1872-1952) and Amelia Caroline Breley (1870-1954). He was the younger brother of William James Henry Wilkinson (1897-1916), who was killed in France in World War I.
1924 – Joined the Navy
On 23 September 1924, Sidney joined the Royal Australian Navy. At the time he was 5″4 tall, with dark hair, grey eyes and a dark complexion.
1927-1928 – HMAS Melbourne
On 13 December 1927, Sidney joined the HMAS Melbourne which lasted until 1 May 1928, during which time the crew sailed for Portsmouth, UK.
On 13 January 1931, Sidney joined the HMAS Cerberus, the location of the Royal Australian Navy College.
On 2 April 1931, Sidney left the HMAS Cereberus.
1931-1933 – Penguin, Albatross, Penguin
On 3 April 1931, Sidney re-joined the HMAS Penguin (III), until 5 August 1931.
On 6 August 1931, Sidney re-joined the HMAS Albatross (I), until 19 August 1932.
On 20 August 1932, Sidney re-joined the HMAS Penguin (III), until 20 July 1933.
1933 – HMAS Canberra
On 21 July 1933, Sidney joined the HMAS Canberra. He remained on this ship for the rest of his career apart from short deployments back to HMAS Penguin (III) (1935 and 1936) and HMAS Cerberus (1936).
1937 – Promotion to Petty Officer
On 1 January 1937, Sidney was rated as a Petty Officer.
On 1 January 1938, Sidney was confirmed as a Petty Officer.
A Petty Officer (PO) in the Royal Australian Navy (RAN) is a non-commissioned officer. They are superior to a seaman, and below the rank of Chief Petty Officer. The role is a major career milestone requiring a shift from simply following orders to identifying problems and actively presenting solutions.
HMAS Canberra History – Sea Power Centre Australia