How did the royal autralian navy start?

It was started in the 16th century and is the UKs oldest serving branch of the British military. The exact date is unknown though.

the royal australiannavy started in 1768. The British Royal Navy formed in the 16th century out of the already existing navy's. However the first segment of this was formed in the 900s to defend and...

It's just called the Royal Navy.

Congress ordered two small ships to be armed to intercept British supply ships during the revolution

The royal navy help the ministry of defence by help fighting with the conflict of war throughout the world, they protect Britain's seaways and the seaways of her colonies from attacks