What is the name of the sea-going vessel used by the Royal Australian Army during 1945 but also use as early as 2nd century AD  and developed rapidly during the Song Dynasty?
HMAS Diamond Snake HMAS "Diamond Snake" was a Snake-class junk built for the Royal Australian Navy during the Second World War. She was launched in 1945 and commissioned into the Royal Australian Navy on 23 July 1945. She was used by the Services Reconnaissance Department and was paid off on 19 October 1945, before being transferred to the Australian Army.
People's Liberation Army Navy The People's Liberation Army Navy (PLAN; ), also known as the PLA Navy, is the naval warfare branch of the People's Liberation Army, which is the armed wing of the Communist Party of China and, by default, the national armed forces of the People's Republic of China. The PLAN can trace its lineage to naval units fighting during the Chinese Civil War and was established in September 1950. Throughout the 1950s and early 1960s the Soviet Union provided assistance to the PLAN in the form of naval advisers and export of equipment and technology. Until the late 1980s, the PLAN was largely a riverine and littoral force (brown-water navy). However, by the 1990s, following the fall of the Soviet Union and a shift towards a more forward-oriented foreign and security policy, the leaders of the Chinese military were freed from worrying over land border disputes, and instead turned their attention towards the seas. This led to the development of the People's Liberation Army Navy into a green-water navy by 2009. Before the 1990s the PLAN had traditionally played a subordinate role to the People's Liberation Army Ground Force.