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. HMAS Diamond Snake:  She was launched in 1945 and commissioned into the Royal Australian Navy on 23 July 1945. Junk (ship): Junk is a type of ancient Chinese sailing ship that is still in use today. Junk (ship):  Junks were used as seagoing vessels as early as the 2nd century AD and developed rapidly during the Song Dynasty (960–1279).
Junk